SL7 postcode district: Marlow and around

SL7 is a postcode district in England, with 695 postcodes in use in 4 sectors. It has postcodes in Marlow, Marlow Bottom and Cookham. It is split between 2 councils: Buckinghamshire (672 postcodes) and Windsor and Maidenhead (23).

Postcodes in use
695
Sectors
4
Councils
2 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 SL7, by flood risk

Map of every postcode in SL7, by flood risk Of the 695 postcodes in SL7 that ONS places, 39 have a home or business at high risk, 57 are at medium risk at worst, 78 are at low risk at worst and 521 are not on the Environment Agency's at-risk list. 5 groups of postcodes at high or medium risk are outlined: 21 postcodes at high or medium risk; 18 postcodes at high or medium risk; 12 postcodes at high or medium risk; 6 postcodes at high or medium risk; 5 postcodes at high or medium risk. Places named: Marlow, Cookham, Marlow Bottom. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. A4155M40 SL7 1AA: not on the flood risk listSL7 1AE: not on the flood risk listSL7 1AG: not on the flood risk listSL7 1AH: not on the flood risk listSL7 1AP: not on the flood risk listSL7 1AS: not on the flood risk listSL7 1AU: not on the flood risk listSL7 1AW: not on the flood risk listSL7 1AX: not on the flood risk listSL7 1BD: not on the flood risk listSL7 1BE: not on the flood risk listSL7 1BG: not on the flood risk listSL7 1BH: not on the flood risk listSL7 1BJ: not on the flood risk listSL7 1BL: not on the flood risk listSL7 1BN: not on the flood risk listSL7 1BP: not on the flood risk listSL7 1BQ: not on the flood risk listSL7 1BW: not on the flood risk listSL7 1DB: not on the flood risk listSL7 1DD: not on the flood risk listSL7 1DE: not on the flood risk listSL7 1DH: not on the flood risk listSL7 1DJ: not on the flood risk listSL7 1DL: not on the flood risk listSL7 1DR: not on the flood risk listSL7 1DS: not on the flood risk listSL7 1DT: not on the flood risk listSL7 1DX: not on the flood risk listSL7 1DY: not on the flood risk listSL7 1ED: not on the flood risk listSL7 1EE: not on the flood risk listSL7 1EF: not on the flood risk listSL7 1EL: not on the flood risk listSL7 1FN: not on the flood risk listSL7 1FQ: not on the flood risk listSL7 1GA: not on the flood risk listSL7 1GJ: not on the flood risk listSL7 1GL: not on the flood risk listSL7 1GN: not on the flood risk listSL7 1GR: not on the flood risk listSL7 1GW: not on the flood risk listSL7 1HB: not on the flood risk listSL7 1HE: not on the flood risk listSL7 1HF: not on the flood risk listSL7 1HG: not on the flood risk listSL7 1HJ: not on the flood risk listSL7 1HL: not on the flood risk listSL7 1HN: not on the flood risk listSL7 1HP: not on the flood risk listSL7 1HR: not on the flood risk listSL7 1HS: not on the flood risk listSL7 1HT: not on the flood risk listSL7 1HW: not on the flood risk listSL7 1HX: not on the flood risk listSL7 1JD: not on the flood risk listSL7 1JE: not on the flood risk listSL7 1JF: not on the flood risk listSL7 1JG: not on the flood risk listSL7 1JH: not on the flood risk listSL7 1JJ: not on the flood risk listSL7 1JL: not on the flood risk listSL7 1JP: not on the flood risk listSL7 1JQ: not on the flood risk listSL7 1JR: not on the flood risk listSL7 1JS: not on the flood risk listSL7 1JT: not on the flood risk listSL7 1JU: not on the flood risk listSL7 1JW: not on the flood risk listSL7 1JY: not on the flood risk listSL7 1JZ: not on the flood risk listSL7 1LB: not on the flood risk listSL7 1LE: not on the flood risk listSL7 1LZ: not on the flood risk listSL7 1NB: not on the flood risk listSL7 1PD: not on the flood risk listSL7 1PN: not on the flood risk listSL7 1PP: not on the flood risk listSL7 1RA: not on the flood risk listSL7 1RT: not on the flood risk listSL7 1SF: not on the flood risk listSL7 1TN: not on the flood risk listSL7 1TP: not on the flood risk listSL7 1TR: not on the flood risk listSL7 1TS: not on the flood risk listSL7 1TT: not on the flood risk listSL7 1TU: not on the flood risk listSL7 1TX: not on the flood risk listSL7 1TY: not on the flood risk listSL7 1UE: not on the flood risk listSL7 1UG: not on the flood risk listSL7 1UQ: not on the flood risk listSL7 1UT: not on the flood risk listSL7 1UU: not on the flood risk listSL7 1XS: not on the flood risk listSL7 1XY: not on the flood risk listSL7 2AT: not on the flood risk listSL7 2BP: not on the flood risk listSL7 2BR: not on the flood risk listSL7 2BU: not on the flood risk listSL7 2BY: not on the flood risk listSL7 2BZ: not on the flood risk listSL7 2DA: not on the flood risk listSL7 2DB: not on the flood risk listSL7 2DD: not on the flood risk listSL7 2DE: not on the flood risk listSL7 2DF: not on the flood risk listSL7 2DG: not on the flood risk listSL7 2DH: not on the flood risk listSL7 2DJ: not on the flood risk listSL7 2DL: not on the flood risk listSL7 2DN: not on the flood risk listSL7 2DP: not on the flood risk listSL7 2DQ: not on the flood risk listSL7 2DS: not on the flood risk listSL7 2DT: not on the flood risk listSL7 2DZ: not on the flood risk listSL7 2ED: not on the flood risk listSL7 2EE: not on the flood risk listSL7 2EH: not on the flood risk listSL7 2EJ: not on the flood risk listSL7 2EL: not on the flood risk listSL7 2EN: not on the flood risk listSL7 2EQ: not on the flood risk listSL7 2ES: not on the flood risk listSL7 2ET: not on the flood risk listSL7 2EU: not on the flood risk listSL7 2EW: not on the flood risk listSL7 2EX: not on the flood risk listSL7 2FE: not on the flood risk listSL7 2FJ: not on the flood risk listSL7 2FN: not on the flood risk listSL7 2FP: not on the flood risk listSL7 2FQ: not on the flood risk listSL7 2FS: not on the flood risk listSL7 2FT: not on the flood risk listSL7 2FU: not on the flood risk listSL7 2FX: not on the flood risk listSL7 2FY: not on the flood risk listSL7 2FZ: not on the flood risk listSL7 2HF: not on the flood risk listSL7 2HH: not on the flood risk listSL7 2HJ: not on the flood risk listSL7 2HL: not on the flood risk listSL7 2HN: not on the flood risk listSL7 2HP: not on the flood risk listSL7 2HR: not on the flood risk listSL7 2HS: not on the flood risk listSL7 2HT: not on the flood risk listSL7 2HU: not on the flood risk listSL7 2HW: not on the flood risk listSL7 2HY: not on the flood risk listSL7 2JD: not on the flood risk listSL7 2JE: not on the flood risk listSL7 2JF: not on the flood risk listSL7 2JG: not on the flood risk listSL7 2JH: not on the flood risk listSL7 2JJ: not on the flood risk listSL7 2JL: not on the flood risk listSL7 2JN: not on the flood risk listSL7 2JQ: not on the flood risk listSL7 2JR: not on the flood risk listSL7 2JS: not on the flood risk listSL7 2JT: not on the flood risk listSL7 2JU: not on the flood risk listSL7 2JX: not on the flood risk listSL7 2JZ: not on the flood risk listSL7 2LA: not on the flood risk listSL7 2LB: not on the flood risk listSL7 2LD: not on the flood risk listSL7 2LE: not on the flood risk listSL7 2LH: not on the flood risk listSL7 2LL: not on the flood risk listSL7 2LS: not on the flood risk listSL7 2NB: not on the flood risk listSL7 2NL: not on the flood risk listSL7 2NP: not on the flood risk listSL7 2NR: not on the flood risk listSL7 2NS: not on the flood risk listSL7 2NU: not on the flood risk listSL7 2NW: not on the flood risk listSL7 2NX: not on the flood risk listSL7 2NY: not on the flood risk listSL7 2NZ: not on the flood risk listSL7 2PA: not on the flood risk listSL7 2PB: not on the flood risk listSL7 2PD: not on the flood risk listSL7 2PJ: not on the flood risk listSL7 2PL: not on the flood risk listSL7 2PN: not on the flood risk listSL7 2PP: not on the flood risk listSL7 2PR: not on the flood risk listSL7 2PS: not on the flood risk listSL7 2PT: not on the flood risk listSL7 2PU: not on the flood risk listSL7 2QB: not on the flood risk listSL7 2QE: not on the flood risk listSL7 2QG: not on the flood risk listSL7 2QH: not on the flood risk listSL7 2QL: not on the flood risk listSL7 2QP: not on the flood risk listSL7 2QR: not on the flood risk listSL7 2QS: not on the flood risk listSL7 2QT: not on the flood risk listSL7 2QU: not on the flood risk listSL7 2QX: not on the flood risk listSL7 2RA: not on the flood risk listSL7 2RB: not on the flood risk listSL7 2RD: not on the flood risk listSL7 2RE: not on the flood risk listSL7 2RF: not on the flood risk listSL7 2RG: not on the flood risk listSL7 2RH: not on the flood risk listSL7 2RQ: not on the flood risk listSL7 2SA: not on the flood risk listSL7 2SB: not on the flood risk listSL7 2SD: not on the flood risk listSL7 2SE: not on the flood risk listSL7 2SF: not on the flood risk listSL7 2SP: not on the flood risk listSL7 2SW: not on the flood risk listSL7 2TH: not on the flood risk listSL7 2UE: not on the flood risk listSL7 2UQ: not on the flood risk listSL7 3AA: not on the flood risk listSL7 3AB: not on the flood risk listSL7 3AE: not on the flood risk listSL7 3AG: not on the flood risk listSL7 3AH: not on the flood risk listSL7 3AL: not on the flood risk listSL7 3AN: not on the flood risk listSL7 3AP: not on the flood risk listSL7 3AQ: not on the flood risk listSL7 3AR: not on the flood risk listSL7 3AS: not on the flood risk listSL7 3AU: not on the flood risk listSL7 3AW: not on the flood risk listSL7 3AY: not on the flood risk listSL7 3AZ: not on the flood risk listSL7 3BA: not on the flood risk listSL7 3BB: not on the flood risk listSL7 3BE: not on the flood risk listSL7 3BF: not on the flood risk listSL7 3BJ: not on the flood risk listSL7 3BL: not on the flood risk listSL7 3BN: not on the flood risk listSL7 3BQ: not on the flood risk listSL7 3BT: not on the flood risk listSL7 3BU: not on the flood risk listSL7 3BW: not on the flood risk listSL7 3BX: not on the flood risk listSL7 3BY: not on the flood risk listSL7 3BZ: not on the flood risk listSL7 3DA: not on the flood risk listSL7 3DB: not on the flood risk listSL7 3DD: not on the flood risk listSL7 3DE: not on the flood risk listSL7 3DF: not on the flood risk listSL7 3DG: not on the flood risk listSL7 3DH: not on the flood risk listSL7 3DJ: not on the flood risk listSL7 3DL: not on the flood risk listSL7 3DN: not on the flood risk listSL7 3DP: not on the flood risk listSL7 3DQ: not on the flood risk listSL7 3DT: not on the flood risk listSL7 3DU: not on the flood risk listSL7 3DW: not on the flood risk listSL7 3DX: not on the flood risk listSL7 3EA: not on the flood risk listSL7 3EB: not on the flood risk listSL7 3ED: not on the flood risk listSL7 3EE: not on the flood risk listSL7 3EF: not on the flood risk listSL7 3EG: not on the flood risk listSL7 3EJ: not on the flood risk listSL7 3EL: not on the flood risk listSL7 3EP: not on the flood risk listSL7 3EQ: not on the flood risk listSL7 3ES: not on the flood risk listSL7 3ET: not on the flood risk listSL7 3EU: not on the flood risk listSL7 3EW: not on the flood risk listSL7 3EX: not on the flood risk listSL7 3EY: not on the flood risk listSL7 3EZ: not on the flood risk listSL7 3FG: not on the flood risk listSL7 3FH: not on the flood risk listSL7 3FL: not on the flood risk listSL7 3FN: not on the flood risk listSL7 3FP: not on the flood risk listSL7 3FQ: not on the flood risk listSL7 3GZ: not on the flood risk listSL7 3HA: not on the flood risk listSL7 3HB: not on the flood risk listSL7 3HF: not on the flood risk listSL7 3HN: not on the flood risk listSL7 3HP: not on the flood risk listSL7 3HR: not on the flood risk listSL7 3HS: not on the flood risk listSL7 3HT: not on the flood risk listSL7 3HW: not on the flood risk listSL7 3HX: not on the flood risk listSL7 3HY: not on the flood risk listSL7 3HZ: not on the flood risk listSL7 3JA: not on the flood risk listSL7 3JB: not on the flood risk listSL7 3JD: not on the flood risk listSL7 3JE: not on the flood risk listSL7 3JF: not on the flood risk listSL7 3JG: not on the flood risk listSL7 3JH: not on the flood risk listSL7 3JP: not on the flood risk listSL7 3JQ: not on the flood risk listSL7 3JR: not on the flood risk listSL7 3JT: not on the flood risk listSL7 3JU: not on the flood risk listSL7 3JX: not on the flood risk listSL7 3JY: not on the flood risk listSL7 3JZ: not on the flood risk listSL7 3LA: not on the flood risk listSL7 3LD: not on the flood risk listSL7 3LE: not on the flood risk listSL7 3LF: not on the flood risk listSL7 3LG: not on the flood risk listSL7 3LH: not on the flood risk listSL7 3LJ: not on the flood risk listSL7 3LQ: not on the flood risk listSL7 3LT: not on the flood risk listSL7 3LU: not on the flood risk listSL7 3LW: not on the flood risk listSL7 3LX: not on the flood risk listSL7 3LY: not on the flood risk listSL7 3LZ: not on the flood risk listSL7 3NA: not on the flood risk listSL7 3ND: not on the flood risk listSL7 3NE: not on the flood risk listSL7 3NG: not on the flood risk listSL7 3NH: not on the flood risk listSL7 3NJ: not on the flood risk listSL7 3NN: not on the flood risk listSL7 3NR: not on the flood risk listSL7 3NS: not on the flood risk listSL7 3NT: not on the flood risk listSL7 3NU: not on the flood risk listSL7 3NX: not on the flood risk listSL7 3NY: not on the flood risk listSL7 3NZ: not on the flood risk listSL7 3PA: not on the flood risk listSL7 3PB: not on the flood risk listSL7 3PD: not on the flood risk listSL7 3PE: not on the flood risk listSL7 3PF: not on the flood risk listSL7 3PG: not on the flood risk listSL7 3PH: not on the flood risk listSL7 3PJ: not on the flood risk listSL7 3PL: not on the flood risk listSL7 3PN: not on the flood risk listSL7 3PP: not on the flood risk listSL7 3PQ: not on the flood risk listSL7 3PR: not on the flood risk listSL7 3PS: not on the flood risk listSL7 3PT: not on the flood risk listSL7 3PU: not on the flood risk listSL7 3PW: not on the flood risk listSL7 3PY: not on the flood risk listSL7 3PZ: not on the flood risk listSL7 3QA: not on the flood risk listSL7 3QB: not on the flood risk listSL7 3QD: not on the flood risk listSL7 3QE: not on the flood risk listSL7 3QF: not on the flood risk listSL7 3QG: not on the flood risk listSL7 3QH: not on the flood risk listSL7 3QJ: not on the flood risk listSL7 3QL: not on the flood risk listSL7 3QN: not on the flood risk listSL7 3QP: not on the flood risk listSL7 3QQ: not on the flood risk listSL7 3QR: not on the flood risk listSL7 3QU: not on the flood risk listSL7 3QW: not on the flood risk listSL7 3RA: not on the flood risk listSL7 3RB: not on the flood risk listSL7 3RD: not on the flood risk listSL7 3RE: not on the flood risk listSL7 3RF: not on the flood risk listSL7 3RG: not on the flood risk listSL7 3RJ: not on the flood risk listSL7 3RL: not on the flood risk listSL7 3RN: not on the flood risk listSL7 3RP: not on the flood risk listSL7 3RR: not on the flood risk listSL7 3RS: not on the flood risk listSL7 3RU: not on the flood risk listSL7 3RW: not on the flood risk listSL7 3RZ: not on the flood risk listSL7 3SA: not on the flood risk listSL7 3SD: not on the flood risk listSL7 3SE: not on the flood risk listSL7 3SF: not on the flood risk listSL7 3SG: not on the flood risk listSL7 3SL: not on the flood risk listSL7 3SR: not on the flood risk listSL7 3SY: not on the flood risk listSL7 3TB: not on the flood risk listSL7 3XB: not on the flood risk listSL7 3XD: not on the flood risk listSL7 3YA: not on the flood risk listSL7 1NF: low flood risk at worstSL7 1AL: low flood risk at worstSL7 1AN: low flood risk at worstSL7 1AQ: low flood risk at worstSL7 1DU: low flood risk at worstSL7 1DW: low flood risk at worstSL7 1NN: low flood risk at worstSL7 1NS: low flood risk at worstSL7 1FJ: low flood risk at worstSL7 1JN: low flood risk at worstSL7 1LD: low flood risk at worstSL7 1LJ: low flood risk at worstSL7 1LP: low flood risk at worstSL7 1LU: low flood risk at worstSL7 1ND: low flood risk at worstSL7 1NG: low flood risk at worstSL7 1NJ: low flood risk at worstSL7 1NR: low flood risk at worstSL7 1NT: low flood risk at worstSL7 1NU: low flood risk at worstSL7 1NW: low flood risk at worstSL7 1PA: low flood risk at worstSL7 1PH: low flood risk at worstSL7 1PL: low flood risk at worstSL7 1PQ: low flood risk at worstSL7 1PY: low flood risk at worstSL7 1PZ: low flood risk at worstSL7 1QP: low flood risk at worstSL7 1QR: low flood risk at worstSL7 1QS: low flood risk at worstSL7 1RX: low flood risk at worstSL7 1SB: low flood risk at worstSL7 1SS: low flood risk at worstSL7 1SY: low flood risk at worstSL7 1TF: low flood risk at worstSL7 1TG: low flood risk at worstSL7 1TQ: low flood risk at worstSL7 1UD: low flood risk at worstSL7 1UH: low flood risk at worstSL7 1UJ: low flood risk at worstSL7 1UP: low flood risk at worstSL7 1UR: low flood risk at worstSL7 1UW: low flood risk at worstSL7 1YA: low flood risk at worstSL7 1YL: low flood risk at worstSL7 2AS: low flood risk at worstSL7 2BJ: low flood risk at worstSL7 2FW: low flood risk at worstSL7 2HA: low flood risk at worstSL7 2HG: low flood risk at worstSL7 2HQ: low flood risk at worstSL7 2SL: low flood risk at worstSL7 3FJ: low flood risk at worstSL7 3RH: low flood risk at worstSL7 1BU: medium flood risk at worstSL7 1LN: medium flood risk at worstSL7 1TB: medium flood risk at worstSL7 1LQ: medium flood risk at worstSL7 1LL: medium flood risk at worstSL7 1LS: medium flood risk at worstSL7 1LW: medium flood risk at worstSL7 1NH: medium flood risk at worstSL7 1PE: medium flood risk at worstSL7 1PF: medium flood risk at worstSL7 1PG: medium flood risk at worstSL7 1PX: medium flood risk at worstSL7 1QA: medium flood risk at worstSL7 1QF: medium flood risk at worstSL7 1QG: medium flood risk at worstSL7 1QH: medium flood risk at worstSL7 1QJ: medium flood risk at worstSL7 1QL: medium flood risk at worstSL7 1QN: medium flood risk at worstSL7 1QQ: medium flood risk at worstSL7 1QT: medium flood risk at worstSL7 1QW: medium flood risk at worstSL7 1QZ: medium flood risk at worstSL7 1RP: medium flood risk at worstSL7 1RU: medium flood risk at worstSL7 1RW: medium flood risk at worstSL7 1SD: medium flood risk at worstSL7 1SZ: medium flood risk at worstSL7 2AD: medium flood risk at worstSL7 2AH: medium flood risk at worstSL7 2AJ: medium flood risk at worstSL7 2AN: medium flood risk at worstSL7 2AP: medium flood risk at worstSL7 2AQ: medium flood risk at worstSL7 2AU: medium flood risk at worstSL7 2AX: medium flood risk at worstSL7 2AY: medium flood risk at worstSL7 2AZ: medium flood risk at worstSL7 2BB: medium flood risk at worstSL7 2BD: medium flood risk at worstSL7 2BE: medium flood risk at worstSL7 2BH: medium flood risk at worstSL7 2BQ: medium flood risk at worstSL7 2DU: medium flood risk at worstSL7 2ER: medium flood risk at worstSL7 2FD: medium flood risk at worstSL7 2FL: medium flood risk at worstSL7 2HE: medium flood risk at worstSL7 3RQ: medium flood risk at worstSL7 3RT: medium flood risk at worstSL7 3RY: medium flood risk at worstSL7 3SB: medium flood risk at worstSL7 1NQ: high flood riskSL7 1QB: high flood riskSL7 1QD: high flood riskSL7 1QE: high flood riskSL7 1QU: high flood riskSL7 1QY: high flood riskSL7 1RE: high flood riskSL7 1RF: high flood riskSL7 1RG: high flood riskSL7 1RH: high flood riskSL7 1RJ: high flood riskSL7 1RL: high flood riskSL7 1RN: high flood riskSL7 1RQ: high flood riskSL7 1RR: high flood riskSL7 1RS: high flood riskSL7 1RY: high flood riskSL7 1RZ: high flood riskSL7 1SA: high flood riskSL7 1SG: high flood riskSL7 1SJ: high flood riskSL7 1SQ: high flood riskSL7 1UA: high flood riskSL7 2AB: high flood riskSL7 2AE: high flood riskSL7 2AG: high flood riskSL7 2BL: high flood riskSL7 2DX: high flood riskSL7 2DY: high flood riskSL7 2EB: high flood riskSL7 2EY: high flood riskSL7 2EZ: high flood riskSL7 2FG: high flood riskSL7 2HB: high flood riskSL7 2SN: high flood riskSL7 2SR: high flood riskSL7 2TA: high flood riskSL7 3RX: high flood risk MarlowCookhamMarlow Bottom 21 postcodes at high or medium risk, outlined: this goes to SL7 1RE, the one with most homes and businesses at high risk21 postcodes at high or medium risk18 postcodes at high or medium risk, outlined: this goes to SL7 2AR, the one with most homes and businesses at high risk18 postcodes at high or medium risk12 postcodes at high or medium risk, outlined: this goes to SL7 1SJ, the one with most homes and businesses at high risk12 postcodes at high or medium risk5 postcodes at high or medium risk, outlined: this goes to SL7 2DX, the one with most homes and businesses at high risk5 postcodes at high or medium risk Map of every postcode in SL7, by flood risk Of the 695 postcodes in SL7 that ONS places, 39 have a home or business at high risk, 57 are at medium risk at worst, 78 are at low risk at worst and 521 are not on the Environment Agency's at-risk list. 5 groups of postcodes at high or medium risk are outlined: 21 postcodes at high or medium risk; 18 postcodes at high or medium risk; 12 postcodes at high or medium risk; 6 postcodes at high or medium risk; 5 postcodes at high or medium risk. Places named: Marlow, Cookham, Marlow Bottom. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2.5 km. M40 MarlowCookhamMarlow Bottom
  • A home or business at high risk: 39
  • At medium risk at worst: 57
  • At low risk at worst: 78
  • At very low risk only: 0
  • Not on the at-risk list: 521
  • Outline: where 5 or more postcodes at high or medium risk lie together

Of the 695 postcodes in SL7 that ONS places, 39 have a home or business at high risk, 57 are at medium risk at worst, 78 are at low risk at worst and 521 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 51.5755, longitude -0.7782. 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

39 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.

SL7 1SJ37 at high riskSL7 1RE29 at high riskSL7 2DX26 at high riskSL7 1RL15 at high riskSL7 1UA14 at high riskSL7 1QE11 at high riskSL7 1RN10 at high riskSL7 2EY10 at high riskSL7 2EZ9 at high riskSL7 1RF7 at high riskSL7 2FG7 at high riskSL7 1QD6 at high risk

Where the postcodes at high or medium risk lie together

  • 21 postcodes at high or medium risk, outlined on the map. SL7 1RE, is the one with most homes and businesses at high risk.
  • 18 postcodes at high or medium risk, outlined on the map. SL7 2AR, is the one with most homes and businesses at high risk.
  • 12 postcodes at high or medium risk, outlined on the map. SL7 1SJ, is the one with most homes and businesses at high risk.
  • 6 postcodes at high or medium risk, outlined on the map. SL7 1PE, is the one with most homes and businesses at high risk.
  • 5 postcodes at high or medium risk, outlined on the map. SL7 2DX, is the one with most homes and businesses at high risk.

What broadband can you get in SL7?

Ofcom reports on 676 of the 695 postcodes in SL7. At 461 of them every home and business can get gigabit broadband, and at 6 some cannot get decent broadband (10 Mbit/s).

Postcodes where every home can get gigabit461 of 676
Postcodes where every home can get superfast620 of 676
Postcodes where some cannot get decent broadband6 of 676

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 SL7 at risk of flooding?

174 of the 695 postcodes in SL7 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 835 homes and businesses in an area at high or medium risk.

Homes and businesses in an area at risk, at 174 of 695 postcodes High: 240Medium: 595Low: 1,501Very low: 84

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 SL7?

Homes in SL7 sold for a typical £675,000 in the 12 months to August 2026, across 239 sales, no change on the 12 months before, HM Land Registry's figures show.

£675,000 typical price, the 12 months to August 2026
12 months to August 2025
£675,000
12 months to August 2026
£675,000

■ no change on the 12 months before

Detached£963,750 88 sales
Semi-detached£629,500 42 sales
Terraced£555,000 60 sales
Flat or maisonette£345,000 49 sales

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 SL7

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

SL7 1264 postcodesSL7 2205 postcodesSL7 3220 postcodesSL7 96 postcodes
UK postcode format explained

Places in SL7

Towns and villages with postcodes in SL7, and how many each has here.

Marlow postcodes,496Marlow Bottom postcodes,64Cookham postcodes,4

Who covers SL7

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

  • Beaconsfield519
  • Wycombe153
  • Maidenhead23

Police force areas

  • Thames Valley695

Next to SL7

SL6 postcode district SL8 postcode district All SL districts Marlow postcodes

"Next to" is by number: the districts before and after SL7 in the SL area.

Check a postcode

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