SL6 postcode district: Maidenhead and around

SL6 is a postcode district in England, with 2,316 postcodes in use in 10 sectors. It has postcodes in Maidenhead, Cookham and Slough. It is split between 3 councils: Windsor and Maidenhead (2,162 postcodes), Buckinghamshire (148) and Slough (6).

Postcodes in use
2,316
Sectors
10
Councils
3 councils
Places
3 places

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026. See all our data sources

Every postcode in SL6, by flood risk

Map of every postcode in SL6, by flood risk Of the 2,316 postcodes in SL6 that ONS places, 135 have a home or business at high risk, 153 are at medium risk at worst, 234 are at low risk at worst, 38 are at very low risk only and 1,756 are not on the Environment Agency's at-risk list. 6 groups of postcodes at high or medium risk are outlined: 142 postcodes at high or medium risk; 24 postcodes at high or medium risk; 15 postcodes at high or medium risk; 8 postcodes at high or medium risk; 7 postcodes at high or medium risk; 5 postcodes at high or medium risk. Places named: Maidenhead, Marlow, Cookham. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2.5 km. A4155A4130A404 SL6 0DB: not on the flood risk listSL6 0DD: not on the flood risk listSL6 0DW: not on the flood risk listSL6 0EH: not on the flood risk listSL6 0ER: not on the flood risk listSL6 0ES: not on the flood risk listSL6 0ET: not on the flood risk listSL6 0EU: not on the flood risk listSL6 0EX: not on the flood risk listSL6 0EZ: not on the flood risk listSL6 0FD: not on the flood risk listSL6 0FE: not on the flood risk listSL6 0FF: not on the flood risk listSL6 0FN: not on the flood risk listSL6 0FQ: not on the flood risk listSL6 0GA: not on the flood risk listSL6 0GB: not on the flood risk listSL6 0HA: not on the flood risk listSL6 0HB: not on the flood risk listSL6 0HE: not on the flood risk listSL6 0HG: not on the flood risk listSL6 0HH: not on the flood risk listSL6 0HL: not on the flood risk listSL6 0HP: not on the flood risk listSL6 0HQ: not on the flood risk listSL6 0HR: not on the flood risk listSL6 0HS: not on the flood risk listSL6 0HT: not on the flood risk listSL6 0HW: not on the flood risk listSL6 0HX: not on the flood risk listSL6 0JB: not on the flood risk listSL6 0JE: not on the flood risk listSL6 0JG: not on the flood risk listSL6 0JH: not on the flood risk listSL6 0JJ: not on the flood risk listSL6 0JQ: not on the flood risk listSL6 0JS: not on the flood risk listSL6 0JU: not on the flood risk listSL6 0JX: not on the flood risk listSL6 0JY: not on the flood risk listSL6 0JZ: not on the flood risk listSL6 0LB: not on the flood risk listSL6 0LE: not on the flood risk listSL6 0LF: not on the flood risk listSL6 0LH: not on the flood risk listSL6 0LJ: not on the flood risk listSL6 0LN: not on the flood risk listSL6 0LQ: not on the flood risk listSL6 0LR: not on the flood risk listSL6 0LT: not on the flood risk listSL6 0LX: not on the flood risk listSL6 0LZ: not on the flood risk listSL6 0NA: not on the flood risk listSL6 0NE: not on the flood risk listSL6 0NF: not on the flood risk listSL6 0NL: not on the flood risk listSL6 0NR: not on the flood risk listSL6 0NS: not on the flood risk listSL6 0NX: not on the flood risk listSL6 0NY: not on the flood risk listSL6 0NZ: not on the flood risk listSL6 0PN: not on the flood risk listSL6 0PQ: not on the flood risk listSL6 0PS: not on the flood risk listSL6 0PW: not on the flood risk listSL6 0QA: not on the flood risk listSL6 0QF: not on the flood risk listSL6 0XW: not on the flood risk listSL6 1BB: not on the flood risk listSL6 1BD: not on the flood risk listSL6 1BG: not on the flood risk listSL6 1BR: not on the flood risk listSL6 1BS: not on the flood risk listSL6 1BY: not on the flood risk listSL6 1DA: not on the flood risk listSL6 1DB: not on the flood risk listSL6 1DD: not on the flood risk listSL6 1DE: not on the flood risk listSL6 1DF: not on the flood risk listSL6 1DH: not on the flood risk listSL6 1DJ: not on the flood risk listSL6 1DN: not on the flood risk listSL6 1DP: not on the flood risk listSL6 1DR: not on the flood risk listSL6 1DS: not on the flood risk listSL6 1DW: not on the flood risk listSL6 1DX: not on the flood risk listSL6 1DY: not on the flood risk listSL6 1ES: not on the flood risk listSL6 1EU: not on the flood risk listSL6 1EW: not on the flood risk listSL6 1EX: not on the flood risk listSL6 1EZ: not on the flood risk listSL6 1HA: not on the flood risk listSL6 1HB: not on the flood risk listSL6 1HH: not on the flood risk listSL6 1HW: not on the flood risk listSL6 1JB: not on the flood risk listSL6 1JE: not on the flood risk listSL6 1LG: not on the flood risk listSL6 1LT: not on the flood risk listSL6 1NX: not on the flood risk listSL6 1PB: not on the flood risk listSL6 1PE: not on the flood risk listSL6 1PG: not on the flood risk listSL6 1RE: not on the flood risk listSL6 1UU: not on the flood risk listSL6 2BF: not on the flood risk listSL6 2DA: not on the flood risk listSL6 2DE: not on the flood risk listSL6 2DG: not on the flood risk listSL6 2DJ: not on the flood risk listSL6 2DN: not on the flood risk listSL6 2DR: not on the flood risk listSL6 2DS: not on the flood risk listSL6 2DU: not on the flood risk listSL6 2DW: not on the flood risk listSL6 2DX: not on the flood risk listSL6 2DY: not on the flood risk listSL6 2EG: not on the flood risk listSL6 2EH: not on the flood risk listSL6 2EL: not on the flood risk listSL6 2EN: not on the flood risk listSL6 2EP: not on the flood risk listSL6 2EQ: not on the flood risk listSL6 2ET: not on the flood risk listSL6 2EU: not on the flood risk listSL6 2EX: not on the flood risk listSL6 2EY: not on the flood risk listSL6 2FD: not on the flood risk listSL6 2FE: not on the flood risk listSL6 2FF: not on the flood risk listSL6 2FG: not on the flood risk listSL6 2FJ: not on the flood risk listSL6 2FL: not on the flood risk listSL6 2FN: not on the flood risk listSL6 2FW: not on the flood risk listSL6 2GA: not on the flood risk listSL6 2GB: not on the flood risk listSL6 2GE: not on the flood risk listSL6 2GG: not on the flood risk listSL6 2GY: not on the flood risk listSL6 2GZ: not on the flood risk listSL6 2HA: not on the flood risk listSL6 2HB: not on the flood risk listSL6 2HD: not on the flood risk listSL6 2HE: not on the flood risk listSL6 2HH: not on the flood risk listSL6 2HJ: not on the flood risk listSL6 2HL: not on the flood risk listSL6 2HN: not on the flood risk listSL6 2HW: not on the flood risk listSL6 2JA: not on the flood risk listSL6 2JG: not on the flood risk listSL6 2JH: not on the flood risk listSL6 2JJ: not on the flood risk listSL6 2JN: not on the flood risk listSL6 2JP: not on the flood risk listSL6 2JQ: not on the flood risk listSL6 2JR: not on the flood risk listSL6 2JU: not on the flood risk listSL6 2JX: not on the flood risk listSL6 2JY: not on the flood risk listSL6 2JZ: not on the flood risk listSL6 2LA: not on the flood risk listSL6 2LD: not on the flood risk listSL6 2LF: not on the flood risk listSL6 2LG: not on the flood risk listSL6 2LJ: not on the flood risk listSL6 2LR: not on the flood risk listSL6 2LS: not on the flood risk listSL6 2LU: not on the flood risk listSL6 2LW: not on the flood risk listSL6 2LY: not on the flood risk listSL6 2NA: not on the flood risk listSL6 2ND: not on the flood risk listSL6 2NF: not on the flood risk listSL6 2NH: not on the flood risk listSL6 2NJ: not on the flood risk listSL6 2NN: not on the flood risk listSL6 2NP: not on the flood risk listSL6 2NR: not on the flood risk listSL6 2NS: not on the flood risk listSL6 2NT: not on the flood risk listSL6 2NU: not on the flood risk listSL6 2NX: not on the flood risk listSL6 2NY: not on the flood risk listSL6 2PB: not on the flood risk listSL6 2PE: not on the flood risk listSL6 2PF: not on the flood risk listSL6 2PG: not on the flood risk listSL6 2PJ: not on the flood risk listSL6 2PN: not on the flood risk listSL6 2PQ: not on the flood risk listSL6 2PR: not on the flood risk listSL6 2PT: not on the flood risk listSL6 2PX: not on the flood risk listSL6 2QA: not on the flood risk listSL6 2QB: not on the flood risk listSL6 2QE: not on the flood risk listSL6 2QF: not on the flood risk listSL6 2QG: not on the flood risk listSL6 2QJ: not on the flood risk listSL6 2QN: not on the flood risk listSL6 2QR: not on the flood risk listSL6 2QT: not on the flood risk listSL6 2QW: not on the flood risk listSL6 2RB: not on the flood risk listSL6 2RD: not on the flood risk listSL6 2RJ: not on the flood risk listSL6 2RL: not on the flood risk listSL6 2RP: not on the flood risk listSL6 2RX: not on the flood risk listSL6 2SA: not on the flood risk listSL6 2SB: not on the flood risk listSL6 2SD: not on the flood risk listSL6 2SE: not on the flood risk listSL6 2SF: not on the flood risk listSL6 2SJ: not on the flood risk listSL6 2SU: not on the flood risk listSL6 2TA: not on the flood risk listSL6 2TE: not on the flood risk listSL6 2TG: not on the flood risk listSL6 2TN: not on the flood risk listSL6 2TU: not on the flood risk listSL6 2UF: not on the flood risk listSL6 2YE: not on the flood risk listSL6 2YN: not on the flood risk listSL6 2YP: not on the flood risk listSL6 2YU: not on the flood risk listSL6 2YW: not on the flood risk listSL6 3AD: not on the flood risk listSL6 3AF: not on the flood risk listSL6 3AH: not on the flood risk listSL6 3AL: not on the flood risk listSL6 3AN: not on the flood risk listSL6 3AQ: not on the flood risk listSL6 3AR: not on the flood risk listSL6 3AS: not on the flood risk listSL6 3AT: not on the flood risk listSL6 3AY: not on the flood risk listSL6 3AZ: not on the flood risk listSL6 3BA: not on the flood risk listSL6 3BB: not on the flood risk listSL6 3BF: not on the flood risk listSL6 3BG: not on the flood risk listSL6 3BH: not on the flood risk listSL6 3BJ: not on the flood risk listSL6 3BP: not on the flood risk listSL6 3BR: not on the flood risk listSL6 3BU: not on the flood risk listSL6 3DA: not on the flood risk listSL6 3DE: not on the flood risk listSL6 3DF: not on the flood risk listSL6 3DP: not on the flood risk listSL6 3DS: not on the flood risk listSL6 3DX: not on the flood risk listSL6 3EB: not on the flood risk listSL6 3ED: not on the flood risk listSL6 3EE: not on the flood risk listSL6 3EG: not on the flood risk listSL6 3EN: not on the flood risk listSL6 3EQ: not on the flood risk listSL6 3EY: not on the flood risk listSL6 3FD: not on the flood risk listSL6 3FG: not on the flood risk listSL6 3FQ: not on the flood risk listSL6 3GQ: not on the flood risk listSL6 3GW: not on the flood risk listSL6 3HE: not on the flood risk listSL6 3HF: not on the flood risk listSL6 3HG: not on the flood risk listSL6 3HH: not on the flood risk listSL6 3HL: not on the flood risk listSL6 3HR: not on the flood risk listSL6 3HS: not on the flood risk listSL6 3HT: not on the flood risk listSL6 3HZ: not on the flood risk listSL6 3JA: not on the flood risk listSL6 3JB: not on the flood risk listSL6 3JE: not on the flood risk listSL6 3JF: not on the flood risk listSL6 3JH: not on the flood risk listSL6 3JL: not on the flood risk listSL6 3JN: not on the flood risk listSL6 3JQ: not on the flood risk listSL6 3JS: not on the flood risk listSL6 3JT: not on the flood risk listSL6 3JU: not on the flood risk listSL6 3JW: not on the flood risk listSL6 3JX: not on the flood risk listSL6 3JY: not on the flood risk listSL6 3JZ: not on the flood risk listSL6 3LA: not on the flood risk listSL6 3LD: not on the flood risk listSL6 3LF: not on the flood risk listSL6 3LG: not on the flood risk listSL6 3LJ: not on the flood risk listSL6 3LL: not on the flood risk listSL6 3LP: not on the flood risk listSL6 3LR: not on the flood risk listSL6 3LS: not on the flood risk listSL6 3LU: not on the flood risk listSL6 3NA: not on the flood risk listSL6 3NB: not on the flood risk listSL6 3NE: not on the flood risk listSL6 3NF: not on the flood risk listSL6 3NJ: not on the flood risk listSL6 3NL: not on the flood risk listSL6 3NN: not on the flood risk listSL6 3NP: not on the flood risk listSL6 3NR: not on the flood risk listSL6 3NT: not on the flood risk listSL6 3NU: not on the flood risk listSL6 3NW: not on the flood risk listSL6 3NX: not on the flood risk listSL6 3NY: not on the flood risk listSL6 3PA: not on the flood risk listSL6 3PE: not on the flood risk listSL6 3PF: not on the flood risk listSL6 3PH: not on the flood risk listSL6 3PJ: not on the flood risk listSL6 3PN: not on the flood risk listSL6 3PQ: not on the flood risk listSL6 3PT: not on the flood risk listSL6 3PU: not on the flood risk listSL6 3PW: not on the flood risk listSL6 3PX: not on the flood risk listSL6 3QA: not on the flood risk listSL6 3QD: not on the flood risk listSL6 3QE: not on the flood risk listSL6 3QF: not on the flood risk listSL6 3QG: not on the flood risk listSL6 3QH: not on the flood risk listSL6 3QL: not on the flood risk listSL6 3QP: not on the flood risk listSL6 3QR: not on the flood risk listSL6 3QS: not on the flood risk listSL6 3QU: not on the flood risk listSL6 3QW: not on the flood risk listSL6 3QX: not on the flood risk listSL6 3QY: not on the flood risk listSL6 3QZ: not on the flood risk listSL6 3RF: not on the flood risk listSL6 3RH: not on the flood risk listSL6 3RT: not on the flood risk listSL6 3RU: not on the flood risk listSL6 3RX: not on the flood risk listSL6 3RY: not on the flood risk listSL6 3RZ: not on the flood risk listSL6 3SB: not on the flood risk listSL6 3SD: not on the flood risk listSL6 3SE: not on the flood risk listSL6 3SG: not on the flood risk listSL6 3SH: not on the flood risk listSL6 3SL: not on the flood risk listSL6 3SP: not on the flood risk listSL6 3SQ: not on the flood risk listSL6 3SU: not on the flood risk listSL6 3SW: not on the flood risk listSL6 3SX: not on the flood risk listSL6 3SY: not on the flood risk listSL6 3SZ: not on the flood risk listSL6 3TA: not on the flood risk listSL6 3TB: not on the flood risk listSL6 3TD: not on the flood risk listSL6 3TW: not on the flood risk listSL6 3TZ: not on the flood risk listSL6 3UD: not on the flood risk listSL6 3UR: not on the flood risk listSL6 3UT: not on the flood risk listSL6 3UU: not on the flood risk listSL6 3UX: not on the flood risk listSL6 3UY: not on the flood risk listSL6 3XA: not on the flood risk listSL6 3XD: not on the flood risk listSL6 3XF: not on the flood risk listSL6 3XG: not on the flood risk listSL6 3XH: not on the flood risk listSL6 3XJ: not on the flood risk listSL6 3XS: not on the flood risk listSL6 3YW: not on the flood risk listSL6 4AJ: not on the flood risk listSL6 4AL: not on the flood risk listSL6 4AN: not on the flood risk listSL6 4AP: not on the flood risk listSL6 4AQ: not on the flood risk listSL6 4AT: not on the flood risk listSL6 4AU: not on the flood risk listSL6 4AW: not on the flood risk listSL6 4AX: not on the flood risk listSL6 4AY: not on the flood risk listSL6 4BA: not on the flood risk listSL6 4BD: not on the flood risk listSL6 4BG: not on the flood risk listSL6 4BH: not on the flood risk listSL6 4BL: not on the flood risk listSL6 4BP: not on the flood risk listSL6 4BR: not on the flood risk listSL6 4BT: not on the flood risk listSL6 4BY: not on the flood risk listSL6 4DD: not on the flood risk listSL6 4DE: not on the flood risk listSL6 4DF: not on the flood risk listSL6 4DG: not on the flood risk listSL6 4DH: not on the flood risk listSL6 4DJ: not on the flood risk listSL6 4DL: not on the flood risk listSL6 4DN: not on the flood risk listSL6 4DP: not on the flood risk listSL6 4DY: not on the flood risk listSL6 4EB: not on the flood risk listSL6 4EE: not on the flood risk listSL6 4EU: not on the flood risk listSL6 4EX: not on the flood risk listSL6 4EY: not on the flood risk listSL6 4FN: not on the flood risk listSL6 4FU: not on the flood risk listSL6 4FW: not on the flood risk listSL6 4GD: not on the flood risk listSL6 4GL: not on the flood risk listSL6 4GY: not on the flood risk listSL6 4GZ: not on the flood risk listSL6 4HF: not on the flood risk listSL6 4HY: not on the flood risk listSL6 4JB: not on the flood risk listSL6 4JT: not on the flood risk listSL6 4JZ: not on the flood risk listSL6 4LA: not on the flood risk listSL6 4LB: not on the flood risk listSL6 4LE: not on the flood risk listSL6 4LF: not on the flood risk listSL6 4LH: not on the flood risk listSL6 4LJ: not on the flood risk listSL6 4LL: not on the flood risk listSL6 4LN: not on the flood risk listSL6 4LQ: not on the flood risk listSL6 4LW: not on the flood risk listSL6 4LZ: not on the flood risk listSL6 4NA: not on the flood risk listSL6 4NB: not on the flood risk listSL6 4ND: not on the flood risk listSL6 4NF: not on the flood risk listSL6 4NG: not on the flood risk listSL6 4NJ: not on the flood risk listSL6 4NL: not on the flood risk listSL6 4NN: not on the flood risk listSL6 4NP: not on the flood risk listSL6 4NT: not on the flood risk listSL6 4NU: not on the flood risk listSL6 4NX: not on the flood risk listSL6 4NZ: not on the flood risk listSL6 4PB: not on the flood risk listSL6 4PH: not on the flood risk listSL6 4PJ: not on the flood risk listSL6 4PL: not on the flood risk listSL6 4PN: not on the flood risk listSL6 4PP: not on the flood risk listSL6 4PQ: not on the flood risk listSL6 4PS: not on the flood risk listSL6 4PU: not on the flood risk listSL6 4PX: not on the flood risk listSL6 4PZ: not on the flood risk listSL6 4QB: not on the flood risk listSL6 4QF: not on the flood risk listSL6 4QG: not on the flood risk listSL6 4QP: not on the flood risk listSL6 4QS: not on the flood risk listSL6 4QU: not on the flood risk listSL6 4QX: not on the flood risk listSL6 4QY: not on the flood risk listSL6 4RB: not on the flood risk listSL6 4RG: not on the flood risk listSL6 4RH: not on the flood risk listSL6 4RN: not on the flood risk listSL6 4UD: not on the flood risk listSL6 5AA: not on the flood risk listSL6 5AB: not on the flood risk listSL6 5AH: not on the flood risk listSL6 5AN: not on the flood risk listSL6 5AP: not on the flood risk listSL6 5AR: not on the flood risk listSL6 5AS: not on the flood risk listSL6 5AU: not on the flood risk listSL6 5BB: not on the flood risk listSL6 5BD: not on the flood risk listSL6 5BE: not on the flood risk listSL6 5BF: not on the flood risk listSL6 5BG: not on the flood risk listSL6 5BH: not on the flood risk listSL6 5BJ: not on the flood risk listSL6 5BP: not on the flood risk listSL6 5BZ: not on the flood risk listSL6 5DB: not on the flood risk listSL6 5DG: not on the flood risk listSL6 5DH: not on the flood risk listSL6 5DJ: not on the flood risk listSL6 5DL: not on the flood risk listSL6 5DN: not on the flood risk listSL6 5DP: not on the flood risk listSL6 5DS: not on the flood risk listSL6 5DT: not on the flood risk listSL6 5DU: not on the flood risk listSL6 5DY: not on the flood risk listSL6 5EA: not on the flood risk listSL6 5EF: not on the flood risk listSL6 5EG: not on the flood risk listSL6 5EJ: not on the flood risk listSL6 5EN: not on the flood risk listSL6 5EP: not on the flood risk listSL6 5ER: not on the flood risk listSL6 5ES: not on the flood risk listSL6 5EU: not on the flood risk listSL6 5FB: not on the flood risk listSL6 5FF: not on the flood risk listSL6 5GY: not on the flood risk listSL6 5HA: not on the flood risk listSL6 5HB: not on the flood risk listSL6 5HE: not on the flood risk listSL6 5HJ: not on the flood risk listSL6 5HL: not on the flood risk listSL6 5HR: not on the flood risk listSL6 5HX: not on the flood risk listSL6 5JA: not on the flood risk listSL6 5JE: not on the flood risk listSL6 5JF: not on the flood risk listSL6 5JG: not on the flood risk listSL6 5JJ: not on the flood risk listSL6 5JN: not on the flood risk listSL6 5JR: not on the flood risk listSL6 5JS: not on the flood risk listSL6 5JX: not on the flood risk listSL6 5LH: not on the flood risk listSL6 5LJ: not on the flood risk listSL6 5NQ: not on the flood risk listSL6 6AA: not on the flood risk listSL6 6AG: not on the flood risk listSL6 6AJ: not on the flood risk listSL6 6AL: not on the flood risk listSL6 6AP: not on the flood risk listSL6 6AT: not on the flood risk listSL6 6AU: not on the flood risk listSL6 6AY: not on the flood risk listSL6 6BA: not on the flood risk listSL6 6BD: not on the flood risk listSL6 6BG: not on the flood risk listSL6 6BH: not on the flood risk listSL6 6BJ: not on the flood risk listSL6 6BL: not on the flood risk listSL6 6DB: not on the flood risk listSL6 6DF: not on the flood risk listSL6 6DH: not on the flood risk listSL6 6DJ: not on the flood risk listSL6 6DN: not on the flood risk listSL6 6DP: not on the flood risk listSL6 6DR: not on the flood risk listSL6 6DT: not on the flood risk listSL6 6DU: not on the flood risk listSL6 6DW: not on the flood risk listSL6 6DX: not on the flood risk listSL6 6EG: not on the flood risk listSL6 6EU: not on the flood risk listSL6 6FL: not on the flood risk listSL6 6FN: not on the flood risk listSL6 6FQ: not on the flood risk listSL6 6FR: not on the flood risk listSL6 6FW: not on the flood risk listSL6 6GZ: not on the flood risk listSL6 6HA: not on the flood risk listSL6 6HB: not on the flood risk listSL6 6HE: not on the flood risk listSL6 6HH: not on the flood risk listSL6 6HL: not on the flood risk listSL6 6HN: not on the flood risk listSL6 6HP: not on the flood risk listSL6 6HQ: not on the flood risk listSL6 6HR: not on the flood risk listSL6 6HS: not on the flood risk listSL6 6HU: not on the flood risk listSL6 6HY: not on the flood risk listSL6 6HZ: not on the flood risk listSL6 6JA: not on the flood risk listSL6 6JD: not on the flood risk listSL6 6JF: not on the flood risk listSL6 6JR: not on the flood risk listSL6 6JU: not on the flood risk listSL6 6JX: not on the flood risk listSL6 6JY: not on the flood risk listSL6 6LA: not on the flood risk listSL6 6LB: not on the flood risk listSL6 6LL: not on the flood risk listSL6 6LS: not on the flood risk listSL6 6LY: not on the flood risk listSL6 6NG: not on the flood risk listSL6 6NH: not on the flood risk listSL6 6NJ: not on the flood risk listSL6 6NN: not on the flood risk listSL6 6NP: not on the flood risk listSL6 6NQ: not on the flood risk listSL6 6NR: not on the flood risk listSL6 6NS: not on the flood risk listSL6 6NT: not on the flood risk listSL6 6NU: not on the flood risk listSL6 6NW: not on the flood risk listSL6 6PA: not on the flood risk listSL6 6PB: not on the flood risk listSL6 6PE: not on the flood risk listSL6 6PF: not on the flood risk listSL6 6PH: not on the flood risk listSL6 6PJ: not on the flood risk listSL6 6PL: not on the flood risk listSL6 6PP: not on the flood risk listSL6 6PQ: not on the flood risk listSL6 6PS: not on the flood risk listSL6 6PT: not on the flood risk listSL6 6PU: not on the flood risk listSL6 6PW: not on the flood risk listSL6 6PX: not on the flood risk listSL6 6PZ: not on the flood risk listSL6 6QD: not on the flood risk listSL6 6QE: not on the flood risk listSL6 6QF: not on the flood risk listSL6 6QG: not on the flood risk listSL6 6QL: not on the flood risk listSL6 6QN: not on the flood risk listSL6 6QP: not on the flood risk listSL6 6QR: not on the flood risk listSL6 6QS: not on the flood risk listSL6 6QT: not on the flood risk listSL6 6QW: not on the flood risk listSL6 6QX: not on the flood risk listSL6 6QY: not on the flood risk listSL6 6QZ: not on the flood risk listSL6 6RA: not on the flood risk listSL6 6RB: not on the flood risk listSL6 6RE: not on the flood risk listSL6 6RF: not on the flood risk listSL6 6RG: not on the flood risk listSL6 6RH: not on the flood risk listSL6 6RJ: not on the flood risk listSL6 6RP: not on the flood risk listSL6 6RQ: not on the flood risk listSL6 6RR: not on the flood risk listSL6 6RU: not on the flood risk listSL6 6RX: not on the flood risk listSL6 6RY: not on the flood risk listSL6 6SA: not on the flood risk listSL6 6SD: not on the flood risk listSL6 6SE: not on the flood risk listSL6 6SF: not on the flood risk listSL6 6SH: not on the flood risk listSL6 6SJ: not on the flood risk listSL6 6SL: not on the flood risk listSL6 6SS: not on the flood risk listSL6 6SW: not on the flood risk listSL6 6SX: not on the flood risk listSL6 7AB: not on the flood risk listSL6 7AD: not on the flood risk listSL6 7AF: not on the flood risk listSL6 7AJ: not on the flood risk listSL6 7AL: not on the flood risk listSL6 7AS: not on the flood risk listSL6 7BB: not on the flood risk listSL6 7BE: not on the flood risk listSL6 7BP: not on the flood risk listSL6 7BU: not on the flood risk listSL6 7BW: not on the flood risk listSL6 7DG: not on the flood risk listSL6 7DN: not on the flood risk listSL6 7DY: not on the flood risk listSL6 7DZ: not on the flood risk listSL6 7EF: not on the flood risk listSL6 7EL: not on the flood risk listSL6 7ET: not on the flood risk listSL6 7EU: not on the flood risk listSL6 7EX: not on the flood risk listSL6 7GQ: not on the flood risk listSL6 7GW: not on the flood risk listSL6 7HS: not on the flood risk listSL6 7HW: not on the flood risk listSL6 7JX: not on the flood risk listSL6 7LB: not on the flood risk listSL6 7LQ: not on the flood risk listSL6 7LY: not on the flood risk listSL6 7NA: not on the flood risk listSL6 7NF: not on the flood risk listSL6 7NP: not on the flood risk listSL6 7NU: not on the flood risk listSL6 7NY: not on the flood risk listSL6 7PA: not on the flood risk listSL6 7PD: not on the flood risk listSL6 7PF: not on the flood risk listSL6 7PJ: not on the flood risk listSL6 7PL: not on the flood risk listSL6 7PP: not on the flood risk listSL6 7PQ: not on the flood risk listSL6 7PR: not on the flood risk listSL6 7PT: not on the flood risk listSL6 7PW: not on the flood risk listSL6 7QA: not on the flood risk listSL6 7QB: not on the flood risk listSL6 7QG: not on the flood risk listSL6 7QH: not on the flood risk listSL6 7QJ: not on the flood risk listSL6 7QL: not on the flood risk listSL6 7QN: not on the flood risk listSL6 7QR: not on the flood risk listSL6 7QW: not on the flood risk listSL6 7QX: not on the flood risk listSL6 7RA: not on the flood risk listSL6 7RB: not on the flood risk listSL6 7RG: not on the flood risk listSL6 7RL: not on the flood risk listSL6 7RN: not on the flood risk listSL6 7RP: not on the flood risk listSL6 7RR: not on the flood risk listSL6 7SE: not on the flood risk listSL6 7SF: not on the flood risk listSL6 7SJ: not on the flood risk listSL6 7TZ: not on the flood risk listSL6 7UD: not on the flood risk listSL6 7UE: not on the flood risk listSL6 7UF: not on the flood risk listSL6 7UH: not on the flood risk listSL6 7UR: not on the flood risk listSL6 7UT: not on the flood risk listSL6 7UU: not on the flood risk listSL6 8AJ: not on the flood risk listSL6 8AR: not on the flood risk listSL6 8FF: not on the flood risk listSL6 8FL: not on the flood risk listSL6 9AA: not on the flood risk listSL6 9AB: not on the flood risk listSL6 9AD: not on the flood risk listSL6 9AE: not on the flood risk listSL6 9AF: not on the flood risk listSL6 9AG: not on the flood risk listSL6 9AH: not on the flood risk listSL6 9AJ: not on the flood risk listSL6 9AN: not on the flood risk listSL6 9AQ: not on the flood risk listSL6 9AR: not on the flood risk listSL6 9AY: not on the flood risk listSL6 9AZ: not on the flood risk listSL6 9BB: not on the flood risk listSL6 9BE: not on the flood risk listSL6 9BL: not on the flood risk listSL6 9BP: not on the flood risk listSL6 9BU: not on the flood risk listSL6 9BZ: not on the flood risk listSL6 9DE: not on the flood risk listSL6 9DQ: not on the flood risk listSL6 9DX: not on the flood risk listSL6 9EB: not on the flood risk listSL6 9ED: not on the flood risk listSL6 9EE: not on the flood risk listSL6 9EH: not on the flood risk listSL6 9EJ: not on the flood risk listSL6 9EL: not on the flood risk listSL6 9EN: not on the flood risk listSL6 9FE: not on the flood risk listSL6 9FF: not on the flood risk listSL6 9FQ: not on the flood risk listSL6 9GT: not on the flood risk listSL6 9GX: not on the flood risk listSL6 9HB: not on the flood risk listSL6 9HF: not on the flood risk listSL6 9HJ: not on the flood risk listSL6 9JF: not on the flood risk listSL6 9JG: not on the flood risk listSL6 9JL: not on the flood risk listSL6 9JP: not on the flood risk listSL6 9JS: not on the flood risk listSL6 9JT: not on the flood risk listSL6 9LG: not on the flood risk listSL6 9LH: not on the flood risk listSL6 9LJ: not on the flood risk listSL6 9LP: not on the flood risk listSL6 9LR: not on the flood risk listSL6 9LS: not on the flood risk listSL6 9LY: not on the flood risk listSL6 9NA: not on the flood risk listSL6 9NB: not on the flood risk listSL6 9NH: not on the flood risk listSL6 9NL: not on the flood risk listSL6 9NR: not on the flood risk listSL6 9NT: not on the flood risk listSL6 9NX: not on the flood risk listSL6 9NY: not on the flood risk listSL6 9NZ: not on the flood risk listSL6 9PA: not on the flood risk listSL6 9PB: not on the flood risk listSL6 9PD: not on the flood risk listSL6 9PE: not on the flood risk listSL6 9PG: not on the flood risk listSL6 9PH: not on the flood risk listSL6 9PJ: not on the flood risk listSL6 9PL: not on the flood risk listSL6 9PN: not on the flood risk listSL6 9PP: not on the flood risk listSL6 9PR: not on the flood risk listSL6 9PS: not on the flood risk listSL6 9PT: not on the flood risk listSL6 9PX: not on the flood risk listSL6 9PY: not on the flood risk listSL6 9RF: not on the flood risk listSL6 9RL: not on the flood risk listSL6 9RP: not on the flood risk listSL6 9RR: not on the flood risk listSL6 9RS: not on the flood risk listSL6 9RW: not on the flood risk listSL6 9RY: not on the flood risk listSL6 9TF: not on the flood risk listSL6 9TH: not on the flood risk listSL6 9TJ: not on the flood risk listSL6 9TL: not on the flood risk listSL6 9TN: not on the flood risk listSL6 9TS: not on the flood risk listSL6 9TT: not on the flood risk listSL6 9TW: not on the flood risk listSL6 9TY: not on the flood risk listSL6 9UA: not on the flood risk listSL6 9UB: not on the flood risk listSL6 9UD: not on the flood risk listSL6 9UE: not on the flood risk listSL6 9UF: not on the flood risk listSL6 9UG: not on the flood risk listSL6 9UH: not on the flood risk listSL6 9UJ: not on the flood risk listSL6 9UQ: not on the flood risk listSL6 0AJ: very low flood risk onlySL6 0BW: very low flood risk onlySL6 0DA: very low flood risk onlySL6 0DN: very low flood risk onlySL6 0DR: very low flood risk onlySL6 0NP: very low flood risk onlySL6 0PT: very low flood risk onlySL6 1GG: very low flood risk onlySL6 1JG: very low flood risk onlySL6 1QZ: very low flood risk onlySL6 2AZ: very low flood risk onlySL6 5NN: very low flood risk onlySL6 8SB: very low flood risk onlySL6 7HA: very low flood risk onlySL6 7HG: very low flood risk onlySL6 8AU: very low flood risk onlySL6 9DA: very low flood risk onlySL6 9DD: very low flood risk onlySL6 9QG: very low flood risk onlySL6 0AA: low flood risk at worstSL6 0AH: low flood risk at worstSL6 0AR: low flood risk at worstSL6 0AU: low flood risk at worstSL6 0AX: low flood risk at worstSL6 0BB: low flood risk at worstSL6 0BF: low flood risk at worstSL6 0DE: low flood risk at worstSL6 0DF: low flood risk at worstSL6 0DT: low flood risk at worstSL6 0DU: low flood risk at worstSL6 0EA: low flood risk at worstSL6 0EF: low flood risk at worstSL6 0FG: low flood risk at worstSL6 0JL: low flood risk at worstSL6 0PL: low flood risk at worstSL6 0PE: low flood risk at worstSL6 0PR: low flood risk at worstSL6 1AA: low flood risk at worstSL6 1AB: low flood risk at worstSL6 1AF: low flood risk at worstSL6 1BW: low flood risk at worstSL6 1AL: low flood risk at worstSL6 1AN: low flood risk at worstSL6 1AS: low flood risk at worstSL6 1AY: low flood risk at worstSL6 1BP: low flood risk at worstSL6 1BT: low flood risk at worstSL6 1FU: low flood risk at worstSL6 1LF: low flood risk at worstSL6 1NQ: low flood risk at worstSL6 1QR: low flood risk at worstSL6 1RN: low flood risk at worstSL6 1RY: low flood risk at worstSL6 1SE: low flood risk at worstSL6 1SH: low flood risk at worstSL6 1TB: low flood risk at worstSL6 1UA: low flood risk at worstSL6 1UB: low flood risk at worstSL6 1UX: low flood risk at worstSL6 2AH: low flood risk at worstSL6 2AP: low flood risk at worstSL6 2BP: low flood risk at worstSL6 2BR: low flood risk at worstSL6 2EE: low flood risk at worstSL6 2HF: low flood risk at worstSL6 2HG: low flood risk at worstSL6 2HX: low flood risk at worstSL6 2JE: low flood risk at worstSL6 2JF: low flood risk at worstSL6 2NB: low flood risk at worstSL6 2UB: low flood risk at worstSL6 3AB: low flood risk at worstSL6 3DZ: low flood risk at worstSL6 3EJ: low flood risk at worstSL6 3JP: low flood risk at worstSL6 3JR: low flood risk at worstSL6 3SR: low flood risk at worstSL6 3SS: low flood risk at worstSL6 3YR: low flood risk at worstSL6 3YP: low flood risk at worstSL6 3YT: low flood risk at worstSL6 3YU: low flood risk at worstSL6 3YX: low flood risk at worstSL6 5LE: low flood risk at worstSL6 5LL: low flood risk at worstSL6 5LN: low flood risk at worstSL6 5LW: low flood risk at worstSL6 5LY: low flood risk at worstSL6 5LZ: low flood risk at worstSL6 5NH: low flood risk at worstSL6 5NL: low flood risk at worstSL6 5PB: low flood risk at worstSL6 7EY: low flood risk at worstSL6 7JS: low flood risk at worstSL6 7JU: low flood risk at worstSL6 8AE: low flood risk at worstSL6 8AX: low flood risk at worstSL6 8BN: low flood risk at worstSL6 8BQ: low flood risk at worstSL6 8BT: low flood risk at worstSL6 8BY: low flood risk at worstSL6 8DF: low flood risk at worstSL6 8DW: low flood risk at worstSL6 8HL: low flood risk at worstSL6 8JB: low flood risk at worstSL6 8LP: low flood risk at worstSL6 8RR: low flood risk at worstSL6 8SE: low flood risk at worstSL6 9DS: low flood risk at worstSL6 9DZ: low flood risk at worstSL6 0AB: medium flood risk at worstSL6 0AD: medium flood risk at worstSL6 0AG: medium flood risk at worstSL6 0AP: medium flood risk at worstSL6 0BG: medium flood risk at worstSL6 0BN: medium flood risk at worstSL6 0DL: medium flood risk at worstSL6 0DX: medium flood risk at worstSL6 0DZ: medium flood risk at worstSL6 0EB: medium flood risk at worstSL6 0EE: medium flood risk at worstSL6 0EL: medium flood risk at worstSL6 0EP: medium flood risk at worstSL6 1TR: medium flood risk at worstSL6 1TS: medium flood risk at worstSL6 1TU: medium flood risk at worstSL6 1XB: medium flood risk at worstSL6 1UF: medium flood risk at worstSL6 1UG: medium flood risk at worstSL6 1UQ: medium flood risk at worstSL6 1UR: medium flood risk at worstSL6 1UW: medium flood risk at worstSL6 1XA: medium flood risk at worstSL6 1XE: medium flood risk at worstSL6 1XQ: medium flood risk at worstSL6 2AT: medium flood risk at worstSL6 2AW: medium flood risk at worstSL6 2AX: medium flood risk at worstSL6 2BN: medium flood risk at worstSL6 2BG: medium flood risk at worstSL6 2BH: medium flood risk at worstSL6 2BJ: medium flood risk at worstSL6 2DD: medium flood risk at worstSL6 2DF: medium flood risk at worstSL6 2DL: medium flood risk at worstSL6 2EA: medium flood risk at worstSL6 2EB: medium flood risk at worstSL6 2EF: medium flood risk at worstSL6 2UA: medium flood risk at worstSL6 3AA: medium flood risk at worstSL6 5NS: medium flood risk at worstSL6 7JJ: medium flood risk at worstSL6 8AL: medium flood risk at worstSL6 8DS: medium flood risk at worstSL6 8DB: medium flood risk at worstSL6 8DH: medium flood risk at worstSL6 8ND: medium flood risk at worstSL6 8EE: medium flood risk at worstSL6 8EL: medium flood risk at worstSL6 8EU: medium flood risk at worstSL6 8EX: medium flood risk at worstSL6 8EY: medium flood risk at worstSL6 8EZ: medium flood risk at worstSL6 8FH: medium flood risk at worstSL6 8HD: medium flood risk at worstSL6 8HH: medium flood risk at worstSL6 8HN: medium flood risk at worstSL6 8HP: medium flood risk at worstSL6 8HT: medium flood risk at worstSL6 8HU: medium flood risk at worstSL6 8HW: medium flood risk at worstSL6 8HX: medium flood risk at worstSL6 8JN: medium flood risk at worstSL6 8NY: medium flood risk at worstSL6 8NZ: medium flood risk at worstSL6 8PD: medium flood risk at worstSL6 8QG: medium flood risk at worstSL6 8UA: medium flood risk at worstSL6 8QL: medium flood risk at worstSL6 8QN: medium flood risk at worstSL6 8RT: medium flood risk at worstSL6 8RX: medium flood risk at worstSL6 8ST: medium flood risk at worstSL6 8TH: medium flood risk at worstSL6 8TQ: medium flood risk at worstSL6 9BF: medium flood risk at worstSL6 9QH: medium flood risk at worstSL6 9QJ: medium flood risk at worstSL6 9QQ: medium flood risk at worstSL6 9QU: medium flood risk at worstSL6 9QY: medium flood risk at worstSL6 9RT: medium flood risk at worstSL6 9RX: medium flood risk at worstSL6 9SE: medium flood risk at worstSL6 9SF: medium flood risk at worstSL6 0HJ: high flood riskSL6 0JA: high flood riskSL6 1LH: high flood riskSL6 1TF: high flood riskSL6 1UE: high flood riskSL6 1UP: high flood riskSL6 1UN: high flood riskSL6 1UT: high flood riskSL6 1XH: high flood riskSL6 2AA: high flood riskSL6 2AE: high flood riskSL6 2DB: high flood riskSL6 2DH: high flood riskSL6 2ED: high flood riskSL6 2EW: high flood riskSL6 2ES: high flood riskSL6 2HY: high flood riskSL6 2HZ: high flood riskSL6 2JB: high flood riskSL6 2JD: high flood riskSL6 2NW: high flood riskSL6 3LQ: high flood riskSL6 3ST: high flood riskSL6 5LT: high flood riskSL6 5LX: high flood riskSL6 5NA: high flood riskSL6 5NB: high flood riskSL6 5ND: high flood riskSL6 5NE: high flood riskSL6 5NF: high flood riskSL6 5NG: high flood riskSL6 7JG: high flood riskSL6 7HD: high flood riskSL6 7HE: high flood riskSL6 7HQ: high flood riskSL6 7JP: high flood riskSL6 7JR: high flood riskSL6 8FA: high flood riskSL6 8DY: high flood riskSL6 8DN: high flood riskSL6 8QT: high flood riskSL6 8DU: high flood riskSL6 8QP: high flood riskSL6 8NU: high flood riskSL6 8EN: high flood riskSL6 8EP: high flood riskSL6 8FG: high flood riskSL6 8PT: high flood riskSL6 8HA: high flood riskSL6 8HE: high flood riskSL6 8HF: high flood riskSL6 8HG: high flood riskSL6 8HJ: high flood riskSL6 8JR: high flood riskSL6 8JS: high flood riskSL6 8LA: high flood riskSL6 8JW: high flood riskSL6 8JZ: high flood riskSL6 8LB: high flood riskSL6 8LD: high flood riskSL6 8LE: high flood riskSL6 8LF: high flood riskSL6 8LG: high flood riskSL6 8LH: high flood riskSL6 8LJ: high flood riskSL6 8PE: high flood riskSL6 8NJ: high flood riskSL6 8NN: high flood riskSL6 8NP: high flood riskSL6 8NS: high flood riskSL6 8NT: high flood riskSL6 8PL: high flood riskSL6 8PS: high flood riskSL6 8PZ: high flood riskSL6 8SW: high flood riskSL6 8RE: high flood riskSL6 8RA: high flood riskSL6 8RG: high flood riskSL6 8RJ: high flood riskSL6 8SJ: high flood riskSL6 8UD: high flood riskSL6 8SY: high flood riskSL6 8TF: high flood riskSL6 8TT: high flood riskSL6 9DH: high flood riskSL6 9DL: high flood riskSL6 9DU: high flood riskSL6 9QD: high flood riskSL6 9QS: high flood riskSL6 9QR: high flood riskSL6 9QT: high flood riskSL6 9QX: high flood riskSL6 9QZ: high flood riskSL6 9RB: high flood riskSL6 9RD: high flood riskSL6 9RQ: high flood riskSL6 9SA: high flood riskSL6 9SD: high flood riskSL6 9SN: high flood riskSL6 9SX: high flood riskSL6 9SR: high flood riskSL6 9TP: high flood riskSL6 9TR: high flood risk MaidenheadMarlowCookham 142 postcodes at high or medium risk, outlined: this goes to SL6 8UE, the one with most homes and businesses at high risk142 postcodes at high or medium risk24 postcodes at high or medium risk, outlined: this goes to SL6 9QS, the one with most homes and businesses at high risk24 postcodes at high or medium risk15 postcodes at high or medium risk, outlined: this goes to SL6 1XZ, the one with most homes and businesses at high risk15 postcodes at high or medium risk8 postcodes at high or medium risk, outlined: this goes to SL6 8JZ, the one with most homes and businesses at high risk8 postcodes at high or medium risk7 postcodes at high or medium risk, outlined: this goes to SL6 2BH, the one with most homes and businesses at high risk7 postcodes at high or medium risk5 postcodes at high or medium risk, outlined: this goes to SL6 1XJ, the one with most homes and businesses at high risk5 postcodes at high or medium risk Map of every postcode in SL6, by flood risk Of the 2,316 postcodes in SL6 that ONS places, 135 have a home or business at high risk, 153 are at medium risk at worst, 234 are at low risk at worst, 38 are at very low risk only and 1,756 are not on the Environment Agency's at-risk list. 6 groups of postcodes at high or medium risk are outlined: 142 postcodes at high or medium risk; 24 postcodes at high or medium risk; 15 postcodes at high or medium risk; 8 postcodes at high or medium risk; 7 postcodes at high or medium risk; 5 postcodes at high or medium risk. Places named: Maidenhead, Marlow, Cookham. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2.5 km. A4155 MaidenheadMarlowCookham
  • A home or business at high risk: 135
  • At medium risk at worst: 153
  • At low risk at worst: 234
  • At very low risk only: 38
  • Not on the at-risk list: 1,756
  • Outline: where 5 or more postcodes at high or medium risk lie together

Of the 2,316 postcodes in SL6 that ONS places, 135 have a home or business at high risk, 153 are at medium risk at worst, 234 are at low risk at worst, 38 are at very low risk only and 1,756 are not on the Environment Agency's at-risk list.

Each mark is a postcode's centre point as ONS gives it, not a building. Press one to see its postcode and open its page. A dashed outline shows where 5 or more lie within 150 metres of each other. It is not a boundary, and no boundary is drawn. Where marks overlap, the one first in the key is drawn; the counts include every postcode.

The middle of its postcodes: latitude 51.5240, longitude -0.7290. Open this area on OpenStreetMap

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026, the centre point of each postcode; flood risk: Environment Agency, published 6 July 2026; roads, rivers and built-up areas: Contains OS data © Crown copyright and database right 2026. Drawn by us. Street map: Ordnance Survey, OS Open Zoomstack, Open Government Licence v3.0, drawn with MapLibre. How we use them

The postcodes at high risk

135 postcodes here have a home or business at high risk. These are the 12 with the most homes and businesses at that risk.

Beside each: how many of its homes and businesses the Environment Agency puts at that risk.

SL6 5ND91 at high riskSL6 9RQ29 at high riskSL6 8UE25 at high riskSL6 8LH22 at high riskSL6 2HY21 at high riskSL6 8PF20 at high riskSL6 8LF20 at high riskSL6 8TT19 at high riskSL6 8LB18 at high riskSL6 8NJ17 at high riskSL6 5NB16 at high riskSL6 5NG16 at high risk

Where the postcodes at high or medium risk lie together

  • 142 postcodes at high or medium risk, outlined on the map. SL6 8UE, is the one with most homes and businesses at high risk.
  • 24 postcodes at high or medium risk, outlined on the map. SL6 9QS, is the one with most homes and businesses at high risk.
  • 15 postcodes at high or medium risk, outlined on the map. SL6 1XZ, is the one with most homes and businesses at high risk.
  • 8 postcodes at high or medium risk, outlined on the map. SL6 8JZ, is the one with most homes and businesses at high risk.
  • 7 postcodes at high or medium risk, outlined on the map. SL6 2BH, is the one with most homes and businesses at high risk.
  • 5 postcodes at high or medium risk, outlined on the map. SL6 1XJ, is the one with most homes and businesses at high risk.

What broadband can you get in SL6?

Ofcom reports on 2,246 of the 2,316 postcodes in SL6. At 1,562 of them every home and business can get gigabit broadband, and at 3 some cannot get decent broadband (10 Mbit/s).

Postcodes where every home can get gigabit1,562 of 2,246
Postcodes where every home can get superfast2,136 of 2,246
Postcodes where some cannot get decent broadband3 of 2,246

Ofcom gives each postcode's share of homes and businesses, not how many there are, so these count postcodes. Each postcode page has its own figures. A provider's checker answers for one address.

Check one address on Ofcom's checker

Source: Ofcom, Connected Nations, Spring 2026, data for January 2026, Open Government Licence v3.0. How we use it

Is SL6 at risk of flooding?

560 of the 2,316 postcodes in SL6 have a home or business in an area at risk of flooding from rivers or the sea, the Environment Agency says. At those, it puts 2,686 homes and businesses in an area at high or medium risk.

Homes and businesses in an area at risk, at 560 of 2,316 postcodes High: 806Medium: 1,880Low: 5,235Very low: 786

High: 3.3% or more a year (1 in 30). Medium: 1% to 3.3% a year. Low: 0.1% to 1% a year. Very low: under 0.1% a year (1 in 1,000). Each band is the chance of flooding in any one year.

Homes and businesses in an area at risk of flooding from rivers or the sea, as the Environment Agency counts them, added up over the postcodes. It is for the land, not each building, and leaves out surface water, groundwater and sewers. Each postcode page has its own figures and its flood warning areas.

Source: Environment Agency, Risk of Flooding from Rivers and Sea (postcodes in areas at risk), published 6 July 2026, Open Government Licence v3.0. How we use it

What do homes sell for in SL6?

Homes in SL6 sold for a typical £508,750 in the 12 months to August 2026, across 846 sales, down 1% on the 12 months before, HM Land Registry's figures show.

£508,750 typical price, the 12 months to August 2026
£513,750 12 months to August 2025
▼ down 1% on the 12 months before
  • Detached £845,000 222 sales
  • Semi-detached £534,000 225 sales
  • Terraced £465,000 185 sales
  • Flat or maisonette £287,500 214 sales

Each bar is that kind's typical price, against the most expensive kind here.

Standard sales of homes at market value. A typical price is the median, the middle sale. Sales take weeks to be registered, so the last month or two are incomplete. Each postcode page gives the figure for its own postcode sector.

Source: HM Land Registry Price Paid Data, files dated 28 September 2026. Contains HM Land Registry data © Crown copyright and database right 2021. This data is licensed under the Open Government Licence v3.0. How we use it

Postcodes in SL6

Pick a sector, then a postcode. A sector is the district plus the next digit.

SL6 0154 postcodesSL6 1239 postcodesSL6 2276 postcodesSL6 3274 postcodesSL6 4213 postcodesSL6 5148 postcodesSL6 6225 postcodesSL6 7254 postcodesSL6 8276 postcodesSL6 9257 postcodes
UK postcode format explained

Places in SL6

Towns and villages with postcodes in SL6, and how many each has here.

Maidenhead postcodes,1,680Cookham postcodes,237Slough postcodes,76

Who covers SL6

How many of the district's postcodes in use fall under each council, constituency and police force area.

Councils

What council am I in?

Constituencies

  • Maidenhead2,162
  • Beaconsfield148
  • Slough6

Police force areas

  • Thames Valley2,316

Next to SL6

SL5 postcode district SL7 postcode district All SL districts Maidenhead postcodes

"Next to" is by number: the districts before and after SL6 in the SL area.

Check a postcode

Something wrong on this page? Report an error and we will check it against the source.