MK18 postcode district: Buckingham and around

MK18 is a postcode district in England, with 1,266 postcodes in use in 9 sectors. It has postcodes in Buckingham, Winslow, Steeple Claydon and 1 more place. It is split between 2 councils: Buckinghamshire (1,245 postcodes) and Cherwell (21). 21 of its 1,266 postcodes are in Oxfordshire. ONS lists no county for the other 1,245.

Postcodes in use
1,266
Sectors
9
Councils
2 councils
Places
4 places

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

Every postcode in MK18, by flood risk

Map of every postcode in MK18, by flood risk Of the 1,266 postcodes in MK18 that ONS places, 30 have a home or business at high risk, 12 are at medium risk at worst, 18 are at low risk at worst, 1 are at very low risk only and 1,205 are not on the Environment Agency's at-risk list. 2 groups of postcodes at high or medium risk are outlined: 16 postcodes at high or medium risk; 5 postcodes at high or medium risk. Places named: Buckingham, Winslow, Deanshanger, Steeple Claydon, Tingewick. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2.5 km. A5 MK18 1AB: not on the flood risk listMK18 1AD: not on the flood risk listMK18 1AE: not on the flood risk listMK18 1AN: not on the flood risk listMK18 1AT: not on the flood risk listMK18 1AX: not on the flood risk listMK18 1AY: not on the flood risk listMK18 1BA: not on the flood risk listMK18 1BB: not on the flood risk listMK18 1BD: not on the flood risk listMK18 1BE: not on the flood risk listMK18 1BF: not on the flood risk listMK18 1BH: not on the flood risk listMK18 1BJ: not on the flood risk listMK18 1BL: not on the flood risk listMK18 1DE: not on the flood risk listMK18 1DN: not on the flood risk listMK18 1DP: not on the flood risk listMK18 1DR: not on the flood risk listMK18 1DU: not on the flood risk listMK18 1DY: not on the flood risk listMK18 1EB: not on the flood risk listMK18 1ED: not on the flood risk listMK18 1EF: not on the flood risk listMK18 1EH: not on the flood risk listMK18 1EJ: not on the flood risk listMK18 1FA: not on the flood risk listMK18 1FB: not on the flood risk listMK18 1FD: not on the flood risk listMK18 1FE: not on the flood risk listMK18 1FF: not on the flood risk listMK18 1FH: not on the flood risk listMK18 1FL: not on the flood risk listMK18 1FN: not on the flood risk listMK18 1FU: not on the flood risk listMK18 1FW: not on the flood risk listMK18 1FY: not on the flood risk listMK18 1GD: not on the flood risk listMK18 1GF: not on the flood risk listMK18 1GG: not on the flood risk listMK18 1GH: not on the flood risk listMK18 1GL: not on the flood risk listMK18 1GN: not on the flood risk listMK18 1GP: not on the flood risk listMK18 1GY: not on the flood risk listMK18 1HJ: not on the flood risk listMK18 1HP: not on the flood risk listMK18 1HQ: not on the flood risk listMK18 1HU: not on the flood risk listMK18 1HX: not on the flood risk listMK18 1HY: not on the flood risk listMK18 1JA: not on the flood risk listMK18 1JB: not on the flood risk listMK18 1JJ: not on the flood risk listMK18 1JW: not on the flood risk listMK18 1LB: not on the flood risk listMK18 1LD: not on the flood risk listMK18 1LF: not on the flood risk listMK18 1LG: not on the flood risk listMK18 1LJ: not on the flood risk listMK18 1LN: not on the flood risk listMK18 1LR: not on the flood risk listMK18 1NQ: not on the flood risk listMK18 1PA: not on the flood risk listMK18 1PB: not on the flood risk listMK18 1PE: not on the flood risk listMK18 1PL: not on the flood risk listMK18 1PW: not on the flood risk listMK18 1PZ: not on the flood risk listMK18 1QD: not on the flood risk listMK18 1QE: not on the flood risk listMK18 1QH: not on the flood risk listMK18 1QL: not on the flood risk listMK18 1QY: not on the flood risk listMK18 1RD: not on the flood risk listMK18 1RE: not on the flood risk listMK18 1RY: not on the flood risk listMK18 1SD: not on the flood risk listMK18 1SH: not on the flood risk listMK18 1SL: not on the flood risk listMK18 1SP: not on the flood risk listMK18 1SR: not on the flood risk listMK18 1ST: not on the flood risk listMK18 1SW: not on the flood risk listMK18 1SZ: not on the flood risk listMK18 1TA: not on the flood risk listMK18 1TB: not on the flood risk listMK18 1TE: not on the flood risk listMK18 1TG: not on the flood risk listMK18 1TH: not on the flood risk listMK18 1TJ: not on the flood risk listMK18 1TL: not on the flood risk listMK18 1TN: not on the flood risk listMK18 1TP: not on the flood risk listMK18 1TW: not on the flood risk listMK18 1TX: not on the flood risk listMK18 1UE: not on the flood risk listMK18 1UL: not on the flood risk listMK18 1WH: not on the flood risk listMK18 1XQ: not on the flood risk listMK18 1XT: not on the flood risk listMK18 1XU: not on the flood risk listMK18 1YD: not on the flood risk listMK18 1YN: not on the flood risk listMK18 1ZJ: not on the flood risk listMK18 1ZL: not on the flood risk listMK18 1ZN: not on the flood risk listMK18 2AA: not on the flood risk listMK18 2AB: not on the flood risk listMK18 2AE: not on the flood risk listMK18 2AG: not on the flood risk listMK18 2AH: not on the flood risk listMK18 2AJ: not on the flood risk listMK18 2AL: not on the flood risk listMK18 2AT: not on the flood risk listMK18 2AU: not on the flood risk listMK18 2AY: not on the flood risk listMK18 2AZ: not on the flood risk listMK18 2BB: not on the flood risk listMK18 2BF: not on the flood risk listMK18 2BH: not on the flood risk listMK18 2BN: not on the flood risk listMK18 2BP: not on the flood risk listMK18 2BW: not on the flood risk listMK18 2DA: not on the flood risk listMK18 2DB: not on the flood risk listMK18 2DG: not on the flood risk listMK18 2DJ: not on the flood risk listMK18 2DP: not on the flood risk listMK18 2DS: not on the flood risk listMK18 2DU: not on the flood risk listMK18 2DX: not on the flood risk listMK18 2DY: not on the flood risk listMK18 2DZ: not on the flood risk listMK18 2EA: not on the flood risk listMK18 2EH: not on the flood risk listMK18 2EJ: not on the flood risk listMK18 2EN: not on the flood risk listMK18 2EP: not on the flood risk listMK18 2ER: not on the flood risk listMK18 2ES: not on the flood risk listMK18 2ET: not on the flood risk listMK18 2EU: not on the flood risk listMK18 2EX: not on the flood risk listMK18 2EZ: not on the flood risk listMK18 2FA: not on the flood risk listMK18 2FB: not on the flood risk listMK18 2FD: not on the flood risk listMK18 2FE: not on the flood risk listMK18 2FF: not on the flood risk listMK18 2FG: not on the flood risk listMK18 2FL: not on the flood risk listMK18 2FN: not on the flood risk listMK18 2FS: not on the flood risk listMK18 2FT: not on the flood risk listMK18 2FU: not on the flood risk listMK18 2FX: not on the flood risk listMK18 2FY: not on the flood risk listMK18 2FZ: not on the flood risk listMK18 2GE: not on the flood risk listMK18 2GG: not on the flood risk listMK18 2GH: not on the flood risk listMK18 2GJ: not on the flood risk listMK18 2GL: not on the flood risk listMK18 2GN: not on the flood risk listMK18 2GP: not on the flood risk listMK18 2GR: not on the flood risk listMK18 2GS: not on the flood risk listMK18 2GW: not on the flood risk listMK18 2GX: not on the flood risk listMK18 2GY: not on the flood risk listMK18 2HA: not on the flood risk listMK18 2HB: not on the flood risk listMK18 2HD: not on the flood risk listMK18 2HE: not on the flood risk listMK18 2HH: not on the flood risk listMK18 2HJ: not on the flood risk listMK18 2HR: not on the flood risk listMK18 2HS: not on the flood risk listMK18 2HU: not on the flood risk listMK18 2HZ: not on the flood risk listMK18 2JD: not on the flood risk listMK18 2JE: not on the flood risk listMK18 2JF: not on the flood risk listMK18 2JL: not on the flood risk listMK18 2JP: not on the flood risk listMK18 2JR: not on the flood risk listMK18 2JS: not on the flood risk listMK18 2JW: not on the flood risk listMK18 2JX: not on the flood risk listMK18 2JY: not on the flood risk listMK18 2JZ: not on the flood risk listMK18 2LA: not on the flood risk listMK18 2LB: not on the flood risk listMK18 2LD: not on the flood risk listMK18 2LE: not on the flood risk listMK18 2LF: not on the flood risk listMK18 2LH: not on the flood risk listMK18 2LJ: not on the flood risk listMK18 2LN: not on the flood risk listMK18 2LP: not on the flood risk listMK18 2LR: not on the flood risk listMK18 2LS: not on the flood risk listMK18 2LT: not on the flood risk listMK18 2LW: not on the flood risk listMK18 2ND: not on the flood risk listMK18 2NE: not on the flood risk listMK18 2NF: not on the flood risk listMK18 2NG: not on the flood risk listMK18 2NP: not on the flood risk listMK18 2NR: not on the flood risk listMK18 2NY: not on the flood risk listMK18 2PA: not on the flood risk listMK18 2PD: not on the flood risk listMK18 2PX: not on the flood risk listMK18 2QA: not on the flood risk listMK18 2QF: not on the flood risk listMK18 2QP: not on the flood risk listMK18 2QR: not on the flood risk listMK18 2QT: not on the flood risk listMK18 2RB: not on the flood risk listMK18 2RH: not on the flood risk listMK18 2RJ: not on the flood risk listMK18 2RT: not on the flood risk listMK18 2WW: not on the flood risk listMK18 3AB: not on the flood risk listMK18 3AN: not on the flood risk listMK18 3AP: not on the flood risk listMK18 3AS: not on the flood risk listMK18 3AT: not on the flood risk listMK18 3AY: not on the flood risk listMK18 3BA: not on the flood risk listMK18 3BP: not on the flood risk listMK18 3BU: not on the flood risk listMK18 3BW: not on the flood risk listMK18 3BY: not on the flood risk listMK18 3DA: not on the flood risk listMK18 3DB: not on the flood risk listMK18 3DE: not on the flood risk listMK18 3DF: not on the flood risk listMK18 3DH: not on the flood risk listMK18 3DQ: not on the flood risk listMK18 3DT: not on the flood risk listMK18 3DU: not on the flood risk listMK18 3DX: not on the flood risk listMK18 3DZ: not on the flood risk listMK18 3EA: not on the flood risk listMK18 3EB: not on the flood risk listMK18 3EJ: not on the flood risk listMK18 3EN: not on the flood risk listMK18 3ES: not on the flood risk listMK18 3ET: not on the flood risk listMK18 3EU: not on the flood risk listMK18 3FE: not on the flood risk listMK18 3FJ: not on the flood risk listMK18 3FN: not on the flood risk listMK18 3FP: not on the flood risk listMK18 3FQ: not on the flood risk listMK18 3FT: not on the flood risk listMK18 3FU: not on the flood risk listMK18 3GH: not on the flood risk listMK18 3GP: not on the flood risk listMK18 3GW: not on the flood risk listMK18 3GY: not on the flood risk listMK18 3HB: not on the flood risk listMK18 3HJ: not on the flood risk listMK18 3HP: not on the flood risk listMK18 3HS: not on the flood risk listMK18 3HT: not on the flood risk listMK18 3HW: not on the flood risk listMK18 3HX: not on the flood risk listMK18 3JE: not on the flood risk listMK18 3JH: not on the flood risk listMK18 3JJ: not on the flood risk listMK18 3JL: not on the flood risk listMK18 3JN: not on the flood risk listMK18 3JP: not on the flood risk listMK18 3JS: not on the flood risk listMK18 3JT: not on the flood risk listMK18 3JU: not on the flood risk listMK18 3JW: not on the flood risk listMK18 3JX: not on the flood risk listMK18 3JY: not on the flood risk listMK18 3JZ: not on the flood risk listMK18 3LA: not on the flood risk listMK18 3LB: not on the flood risk listMK18 3LE: not on the flood risk listMK18 3LF: not on the flood risk listMK18 3LG: not on the flood risk listMK18 3LH: not on the flood risk listMK18 3LJ: not on the flood risk listMK18 3LL: not on the flood risk listMK18 3LN: not on the flood risk listMK18 3LQ: not on the flood risk listMK18 3LS: not on the flood risk listMK18 3LT: not on the flood risk listMK18 3LW: not on the flood risk listMK18 3LX: not on the flood risk listMK18 3LY: not on the flood risk listMK18 3LZ: not on the flood risk listMK18 3NA: not on the flood risk listMK18 3NB: not on the flood risk listMK18 3ND: not on the flood risk listMK18 3NF: not on the flood risk listMK18 3NG: not on the flood risk listMK18 3NJ: not on the flood risk listMK18 3NL: not on the flood risk listMK18 3NN: not on the flood risk listMK18 3NR: not on the flood risk listMK18 3NT: not on the flood risk listMK18 3NU: not on the flood risk listMK18 3PA: not on the flood risk listMK18 3PB: not on the flood risk listMK18 3PD: not on the flood risk listMK18 3PE: not on the flood risk listMK18 3PF: not on the flood risk listMK18 3PG: not on the flood risk listMK18 3PJ: not on the flood risk listMK18 3PL: not on the flood risk listMK18 3PN: not on the flood risk listMK18 3PP: not on the flood risk listMK18 3PQ: not on the flood risk listMK18 3PR: not on the flood risk listMK18 3PS: not on the flood risk listMK18 3PU: not on the flood risk listMK18 3QA: not on the flood risk listMK18 3QJ: not on the flood risk listMK18 3QL: not on the flood risk listMK18 3QQ: not on the flood risk listMK18 3RR: not on the flood risk listMK18 3RY: not on the flood risk listMK18 3SD: not on the flood risk listMK18 3SE: not on the flood risk listMK18 3SN: not on the flood risk listMK18 3SQ: not on the flood risk listMK18 3SU: not on the flood risk listMK18 4AA: not on the flood risk listMK18 4AD: not on the flood risk listMK18 4AF: not on the flood risk listMK18 4AG: not on the flood risk listMK18 4AH: not on the flood risk listMK18 4AJ: not on the flood risk listMK18 4AL: not on the flood risk listMK18 4AN: not on the flood risk listMK18 4AP: not on the flood risk listMK18 4AQ: not on the flood risk listMK18 4AS: not on the flood risk listMK18 4AT: not on the flood risk listMK18 4AU: not on the flood risk listMK18 4AX: not on the flood risk listMK18 4AZ: not on the flood risk listMK18 4BA: not on the flood risk listMK18 4BB: not on the flood risk listMK18 4BD: not on the flood risk listMK18 4BG: not on the flood risk listMK18 4BH: not on the flood risk listMK18 4BL: not on the flood risk listMK18 4BP: not on the flood risk listMK18 4BS: not on the flood risk listMK18 4BT: not on the flood risk listMK18 4BU: not on the flood risk listMK18 4BX: not on the flood risk listMK18 4BY: not on the flood risk listMK18 4BZ: not on the flood risk listMK18 4DA: not on the flood risk listMK18 4DB: not on the flood risk listMK18 4DD: not on the flood risk listMK18 4DE: not on the flood risk listMK18 4DG: not on the flood risk listMK18 4DN: not on the flood risk listMK18 4DP: not on the flood risk listMK18 4DR: not on the flood risk listMK18 4DS: not on the flood risk listMK18 4DT: not on the flood risk listMK18 4DU: not on the flood risk listMK18 4DW: not on the flood risk listMK18 4DX: not on the flood risk listMK18 4EA: not on the flood risk listMK18 4EB: not on the flood risk listMK18 4ED: not on the flood risk listMK18 4EE: not on the flood risk listMK18 4EG: not on the flood risk listMK18 4EH: not on the flood risk listMK18 4EL: not on the flood risk listMK18 4EP: not on the flood risk listMK18 4ET: not on the flood risk listMK18 4EW: not on the flood risk listMK18 4EY: not on the flood risk listMK18 4FD: not on the flood risk listMK18 4FG: not on the flood risk listMK18 4FH: not on the flood risk listMK18 4FJ: not on the flood risk listMK18 4FL: not on the flood risk listMK18 4FN: not on the flood risk listMK18 4FP: not on the flood risk listMK18 4HA: not on the flood risk listMK18 4HB: not on the flood risk listMK18 4HE: not on the flood risk listMK18 4HF: not on the flood risk listMK18 4HJ: not on the flood risk listMK18 4HL: not on the flood risk listMK18 4HP: not on the flood risk listMK18 4HT: not on the flood risk listMK18 4HU: not on the flood risk listMK18 4JA: not on the flood risk listMK18 4JB: not on the flood risk listMK18 4JD: not on the flood risk listMK18 4JE: not on the flood risk listMK18 4JF: not on the flood risk listMK18 4JG: not on the flood risk listMK18 4JH: not on the flood risk listMK18 4JJ: not on the flood risk listMK18 4JQ: not on the flood risk listMK18 4JR: not on the flood risk listMK18 4JS: not on the flood risk listMK18 4JT: not on the flood risk listMK18 4JU: not on the flood risk listMK18 4JX: not on the flood risk listMK18 4JY: not on the flood risk listMK18 4JZ: not on the flood risk listMK18 4LA: not on the flood risk listMK18 4LB: not on the flood risk listMK18 4LD: not on the flood risk listMK18 4LE: not on the flood risk listMK18 4LF: not on the flood risk listMK18 4LG: not on the flood risk listMK18 4LH: not on the flood risk listMK18 4LJ: not on the flood risk listMK18 4LN: not on the flood risk listMK18 4LQ: not on the flood risk listMK18 4LR: not on the flood risk listMK18 4NA: not on the flood risk listMK18 4NB: not on the flood risk listMK18 4ND: not on the flood risk listMK18 4NE: not on the flood risk listMK18 4NG: not on the flood risk listMK18 4NH: not on the flood risk listMK18 4NP: not on the flood risk listMK18 4NQ: not on the flood risk listMK18 4NS: not on the flood risk listMK18 4NU: not on the flood risk listMK18 4PD: not on the flood risk listMK18 4PF: not on the flood risk listMK18 4PQ: not on the flood risk listMK18 4QA: not on the flood risk listMK18 4QH: not on the flood risk listMK18 4QJ: not on the flood risk listMK18 4QY: not on the flood risk listMK18 4QZ: not on the flood risk listMK18 4RA: not on the flood risk listMK18 4RB: not on the flood risk listMK18 4RD: not on the flood risk listMK18 4RE: not on the flood risk listMK18 4RF: not on the flood risk listMK18 5AA: not on the flood risk listMK18 5AB: not on the flood risk listMK18 5AD: not on the flood risk listMK18 5AE: not on the flood risk listMK18 5AF: not on the flood risk listMK18 5AG: not on the flood risk listMK18 5AH: not on the flood risk listMK18 5AJ: not on the flood risk listMK18 5AL: not on the flood risk listMK18 5AN: not on the flood risk listMK18 5AP: not on the flood risk listMK18 5AQ: not on the flood risk listMK18 5AR: not on the flood risk listMK18 5AT: not on the flood risk listMK18 5AW: not on the flood risk listMK18 5AX: not on the flood risk listMK18 5AY: not on the flood risk listMK18 5AZ: not on the flood risk listMK18 5BB: not on the flood risk listMK18 5BD: not on the flood risk listMK18 5BG: not on the flood risk listMK18 5BH: not on the flood risk listMK18 5BJ: not on the flood risk listMK18 5BL: not on the flood risk listMK18 5BN: not on the flood risk listMK18 5BP: not on the flood risk listMK18 5BS: not on the flood risk listMK18 5BT: not on the flood risk listMK18 5BW: not on the flood risk listMK18 5BZ: not on the flood risk listMK18 5DA: not on the flood risk listMK18 5DB: not on the flood risk listMK18 5DD: not on the flood risk listMK18 5DE: not on the flood risk listMK18 5DF: not on the flood risk listMK18 5DH: not on the flood risk listMK18 5DJ: not on the flood risk listMK18 5DN: not on the flood risk listMK18 5DP: not on the flood risk listMK18 5DQ: not on the flood risk listMK18 5DR: not on the flood risk listMK18 5DS: not on the flood risk listMK18 5DX: not on the flood risk listMK18 5DY: not on the flood risk listMK18 5DZ: not on the flood risk listMK18 5EA: not on the flood risk listMK18 5EB: not on the flood risk listMK18 5ED: not on the flood risk listMK18 5EE: not on the flood risk listMK18 5EG: not on the flood risk listMK18 5EH: not on the flood risk listMK18 5EQ: not on the flood risk listMK18 5EX: not on the flood risk listMK18 5EY: not on the flood risk listMK18 5GZ: not on the flood risk listMK18 5HD: not on the flood risk listMK18 5HE: not on the flood risk listMK18 5HF: not on the flood risk listMK18 5HG: not on the flood risk listMK18 5HH: not on the flood risk listMK18 5HJ: not on the flood risk listMK18 5HP: not on the flood risk listMK18 5HQ: not on the flood risk listMK18 5HS: not on the flood risk listMK18 5HZ: not on the flood risk listMK18 5JE: not on the flood risk listMK18 5JG: not on the flood risk listMK18 5JJ: not on the flood risk listMK18 5JN: not on the flood risk listMK18 5JX: not on the flood risk listMK18 5JY: not on the flood risk listMK18 5JZ: not on the flood risk listMK18 5LA: not on the flood risk listMK18 5LB: not on the flood risk listMK18 5LE: not on the flood risk listMK18 5LG: not on the flood risk listMK18 5LH: not on the flood risk listMK18 5LJ: not on the flood risk listMK18 5LQ: not on the flood risk listMK18 5LT: not on the flood risk listMK18 5LU: not on the flood risk listMK18 5NA: not on the flood risk listMK18 5NB: not on the flood risk listMK18 5ND: not on the flood risk listMK18 5NE: not on the flood risk listMK18 5NN: not on the flood risk listMK18 5NP: not on the flood risk listMK18 5NR: not on the flood risk listMK18 5NS: not on the flood risk listMK18 5NW: not on the flood risk listMK18 5NX: not on the flood risk listMK18 5NY: not on the flood risk listMK18 5NZ: not on the flood risk listMK18 5PA: not on the flood risk listMK18 6AA: not on the flood risk listMK18 6AB: not on the flood risk listMK18 6AD: not on the flood risk listMK18 6AE: not on the flood risk listMK18 6AF: not on the flood risk listMK18 6AG: not on the flood risk listMK18 6AH: not on the flood risk listMK18 7AB: not on the flood risk listMK18 7AR: not on the flood risk listMK18 7AS: not on the flood risk listMK18 7AU: not on the flood risk listMK18 7AX: not on the flood risk listMK18 7AY: not on the flood risk listMK18 7BD: not on the flood risk listMK18 7BH: not on the flood risk listMK18 7BQ: not on the flood risk listMK18 7BT: not on the flood risk listMK18 7BW: not on the flood risk listMK18 7DE: not on the flood risk listMK18 7DP: not on the flood risk listMK18 7DR: not on the flood risk listMK18 7DS: not on the flood risk listMK18 7DT: not on the flood risk listMK18 7DX: not on the flood risk listMK18 7EB: not on the flood risk listMK18 7EG: not on the flood risk listMK18 7EJ: not on the flood risk listMK18 7EN: not on the flood risk listMK18 7ER: not on the flood risk listMK18 7ES: not on the flood risk listMK18 7EY: not on the flood risk listMK18 7HA: not on the flood risk listMK18 7HP: not on the flood risk listMK18 7JH: not on the flood risk listMK18 7JJ: not on the flood risk listMK18 7QA: not on the flood risk listMK18 7RD: not on the flood risk listMK18 7RE: not on the flood risk listMK18 7RG: not on the flood risk listMK18 7RQ: not on the flood risk listMK18 7RW: not on the flood risk listMK18 7RX: not on the flood risk listMK18 7RZ: not on the flood risk listMK18 7SE: not on the flood risk listMK18 7BP: very low flood risk onlyMK18 1BU: low flood risk at worstMK18 1HH: low flood risk at worstMK18 1SF: low flood risk at worstMK18 2DH: low flood risk at worstMK18 2HP: low flood risk at worstMK18 2EB: low flood risk at worstMK18 4AE: low flood risk at worstMK18 5BE: low flood risk at worstMK18 1EG: medium flood risk at worstMK18 2DF: medium flood risk at worstMK18 4DL: medium flood risk at worstMK18 5BQ: medium flood risk at worstMK18 5EZ: medium flood risk at worstMK18 5LY: medium flood risk at worstMK18 7HX: medium flood risk at worstMK18 1RP: high flood riskMK18 1AG: high flood riskMK18 1AH: high flood riskMK18 1AJ: high flood riskMK18 1AL: high flood riskMK18 1EN: high flood riskMK18 1DA: high flood riskMK18 1DD: high flood riskMK18 1EP: high flood riskMK18 1DQ: high flood riskMK18 1GB: high flood riskMK18 1JD: high flood riskMK18 7BF: high flood riskMK18 2BL: high flood riskMK18 2BU: high flood riskMK18 2DN: high flood riskMK18 2ED: high flood riskMK18 3NQ: high flood riskMK18 4AB: high flood riskMK18 4DY: high flood riskMK18 4DZ: high flood riskMK18 5AS: high flood riskMK18 5LX: high flood riskMK18 5NU: high flood riskMK18 7DL: high flood risk BuckinghamWinslowDeanshangerSteeple ClaydonTingewick 16 postcodes at high or medium risk, outlined: this goes to MK18 1UP, the one with most homes and businesses at high risk16 postcodes at high or medium risk5 postcodes at high or medium risk, outlined: this goes to MK18 1RP, the one with most homes and businesses at high risk5 postcodes at high or medium risk Map of every postcode in MK18, by flood risk Of the 1,266 postcodes in MK18 that ONS places, 30 have a home or business at high risk, 12 are at medium risk at worst, 18 are at low risk at worst, 1 are at very low risk only and 1,205 are not on the Environment Agency's at-risk list. 2 groups of postcodes at high or medium risk are outlined: 16 postcodes at high or medium risk; 5 postcodes at high or medium risk. Places named: Buckingham, Winslow, Deanshanger, Steeple Claydon. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 5 km. BuckinghamWinslowDeanshangerSteeple Claydon
  • A home or business at high risk: 30
  • At medium risk at worst: 12
  • At low risk at worst: 18
  • At very low risk only: 1
  • Not on the at-risk list: 1,205
  • Outline: where 5 or more postcodes at high or medium risk lie together

Of the 1,266 postcodes in MK18 that ONS places, 30 have a home or business at high risk, 12 are at medium risk at worst, 18 are at low risk at worst, 1 are at very low risk only and 1,205 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 51.9779, longitude -0.9690. 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

30 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.

MK18 1RP16 at high riskMK18 1UP9 at high riskMK18 2ED5 at high riskMK18 1GB5 at high riskMK18 1JD4 at high riskMK18 2DN4 at high riskMK18 1AG3 at high riskMK18 1AJ3 at high riskMK18 1EP3 at high riskMK18 4DY3 at high riskMK18 1AH2 at high riskMK18 1DB2 at high risk

Where the postcodes at high or medium risk lie together

  • 16 postcodes at high or medium risk, outlined on the map. MK18 1UP, is the one with most homes and businesses at high risk.
  • 5 postcodes at high or medium risk, outlined on the map. MK18 1RP, is the one with most homes and businesses at high risk.

What broadband can you get in MK18?

Ofcom reports on 1,234 of the 1,266 postcodes in MK18. At 910 of them every home and business can get gigabit broadband, and at 30 some cannot get decent broadband (10 Mbit/s).

Postcodes where every home can get gigabit910 of 1,234
Postcodes where every home can get superfast1,038 of 1,234
Postcodes where some cannot get decent broadband30 of 1,234

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 MK18 at risk of flooding?

61 of the 1,266 postcodes in MK18 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 141 homes and businesses in an area at high or medium risk.

Homes and businesses in an area at risk, at 61 of 1,266 postcodes High: 80Medium: 61Low: 201Very low: 14

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 MK18?

Homes in MK18 sold for a typical £370,000 in the 12 months to August 2026, across 377 sales, down 7.3% on the 12 months before, HM Land Registry's figures show.

£370,000 typical price, the 12 months to August 2026
12 months to August 2025
£399,000
12 months to August 2026
£370,000

▼ down 7.3% on the 12 months before

Detached£538,225 138 sales
Semi-detached£355,000 105 sales
Terraced£290,000 115 sales
Flat or maisonette£200,000 19 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 MK18

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

MK18 1366 postcodesMK18 2230 postcodesMK18 3238 postcodesMK18 4193 postcodesMK18 5122 postcodesMK18 67 postcodesMK18 7102 postcodesMK18 83 postcodesMK18 95 postcodes
UK postcode format explained

Places in MK18

Towns and villages with postcodes in MK18, and how many each has here.

Buckingham postcodes,432Winslow postcodes,163Steeple Claydon postcodes,75Tingewick postcodes,52

Who covers MK18

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

  • Buckingham and Bletchley1,079
  • Mid Buckinghamshire166
  • Bicester and Woodstock21

Police force areas

  • Thames Valley1,266

Next to MK18

MK17 postcode district MK19 postcode district All MK districts Buckingham postcodes

"Next to" is by number: the districts before and after MK18 in the MK area.

Check a postcode

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