WD3 postcode district: Rickmansworth and around

WD3 is a postcode district mostly in Hertfordshire, with 1,281 postcodes in use in 10 sectors. It has postcodes in Rickmansworth, Chorleywood, Maple Cross and 3 more places. It is split between 4 councils: Three Rivers (1,250 postcodes), Buckinghamshire (20), Hillingdon (9) and 1 other. 1,251 are in Hertfordshire. ONS lists no county for 29 more. ONS gives no location for 1 of its postcodes, and so no council.

Postcodes in use
1,281
Sectors
10
Councils
4 councils
Places
6 places

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

Every postcode in WD3, by flood risk

Map of every postcode in WD3, by flood risk Of the 1,280 postcodes in WD3 that ONS places, 68 have a home or business at high risk, 14 are at medium risk at worst, 31 are at low risk at worst, 7 are at very low risk only and 1,160 are not on the Environment Agency's at-risk list. 2 groups of postcodes at high or medium risk are outlined: 51 postcodes at high or medium risk; 5 postcodes at high or medium risk. Places named: Rickmansworth, Chorleywood, Moor Park, Maple Cross. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2 km. A411A4145M25A41 WD3 0AJ: not on the flood risk listWD3 0YY: not on the flood risk listWD3 1AB: not on the flood risk listWD3 1AE: not on the flood risk listWD3 1AG: not on the flood risk listWD3 1BA: not on the flood risk listWD3 1BB: not on the flood risk listWD3 1BD: not on the flood risk listWD3 1BR: not on the flood risk listWD3 1EA: not on the flood risk listWD3 1EP: not on the flood risk listWD3 1FE: not on the flood risk listWD3 1FG: not on the flood risk listWD3 1FJ: not on the flood risk listWD3 1FQ: not on the flood risk listWD3 1FT: not on the flood risk listWD3 1FX: not on the flood risk listWD3 1GL: not on the flood risk listWD3 1GY: not on the flood risk listWD3 1HF: not on the flood risk listWD3 1HL: not on the flood risk listWD3 1HX: not on the flood risk listWD3 1JH: not on the flood risk listWD3 1JL: not on the flood risk listWD3 1JP: not on the flood risk listWD3 1JR: not on the flood risk listWD3 1JS: not on the flood risk listWD3 1JT: not on the flood risk listWD3 1JU: not on the flood risk listWD3 1JX: not on the flood risk listWD3 1LD: not on the flood risk listWD3 1LG: not on the flood risk listWD3 1LJ: not on the flood risk listWD3 1LL: not on the flood risk listWD3 1LN: not on the flood risk listWD3 1LQ: not on the flood risk listWD3 1LW: not on the flood risk listWD3 1NJ: not on the flood risk listWD3 1NL: not on the flood risk listWD3 1NN: not on the flood risk listWD3 1NT: not on the flood risk listWD3 1NW: not on the flood risk listWD3 1NY: not on the flood risk listWD3 1PB: not on the flood risk listWD3 1PD: not on the flood risk listWD3 1PE: not on the flood risk listWD3 1PH: not on the flood risk listWD3 1PJ: not on the flood risk listWD3 1PP: not on the flood risk listWD3 1PQ: not on the flood risk listWD3 1PR: not on the flood risk listWD3 1PS: not on the flood risk listWD3 1PT: not on the flood risk listWD3 1PU: not on the flood risk listWD3 1PX: not on the flood risk listWD3 1PY: not on the flood risk listWD3 1PZ: not on the flood risk listWD3 1QA: not on the flood risk listWD3 1QB: not on the flood risk listWD3 1QD: not on the flood risk listWD3 1QH: not on the flood risk listWD3 1QJ: not on the flood risk listWD3 1QL: not on the flood risk listWD3 1QN: not on the flood risk listWD3 1QP: not on the flood risk listWD3 1QW: not on the flood risk listWD3 1QY: not on the flood risk listWD3 1RE: not on the flood risk listWD3 1SW: not on the flood risk listWD3 3AE: not on the flood risk listWD3 3AF: not on the flood risk listWD3 3AH: not on the flood risk listWD3 3AL: not on the flood risk listWD3 3AN: not on the flood risk listWD3 3AP: not on the flood risk listWD3 3AQ: not on the flood risk listWD3 3AR: not on the flood risk listWD3 3AS: not on the flood risk listWD3 3AT: not on the flood risk listWD3 3AU: not on the flood risk listWD3 3BD: not on the flood risk listWD3 3BE: not on the flood risk listWD3 3BJ: not on the flood risk listWD3 3BL: not on the flood risk listWD3 3BN: not on the flood risk listWD3 3BP: not on the flood risk listWD3 3BR: not on the flood risk listWD3 3BS: not on the flood risk listWD3 3BW: not on the flood risk listWD3 3BX: not on the flood risk listWD3 3BZ: not on the flood risk listWD3 3DA: not on the flood risk listWD3 3DB: not on the flood risk listWD3 3DD: not on the flood risk listWD3 3DE: not on the flood risk listWD3 3DF: not on the flood risk listWD3 3DG: not on the flood risk listWD3 3DH: not on the flood risk listWD3 3DJ: not on the flood risk listWD3 3DN: not on the flood risk listWD3 3DP: not on the flood risk listWD3 3DQ: not on the flood risk listWD3 3DS: not on the flood risk listWD3 3DX: not on the flood risk listWD3 3EA: not on the flood risk listWD3 3ED: not on the flood risk listWD3 3EE: not on the flood risk listWD3 3EH: not on the flood risk listWD3 3EJ: not on the flood risk listWD3 3EN: not on the flood risk listWD3 3EQ: not on the flood risk listWD3 3ER: not on the flood risk listWD3 3ES: not on the flood risk listWD3 3ET: not on the flood risk listWD3 3EU: not on the flood risk listWD3 3EX: not on the flood risk listWD3 3EY: not on the flood risk listWD3 3FA: not on the flood risk listWD3 3FB: not on the flood risk listWD3 3FD: not on the flood risk listWD3 3FE: not on the flood risk listWD3 3FF: not on the flood risk listWD3 3FG: not on the flood risk listWD3 3FJ: not on the flood risk listWD3 3FL: not on the flood risk listWD3 3FP: not on the flood risk listWD3 3FQ: not on the flood risk listWD3 3FR: not on the flood risk listWD3 3FS: not on the flood risk listWD3 3FT: not on the flood risk listWD3 3FU: not on the flood risk listWD3 3FW: not on the flood risk listWD3 3FX: not on the flood risk listWD3 3GA: not on the flood risk listWD3 3GB: not on the flood risk listWD3 3GD: not on the flood risk listWD3 3GE: not on the flood risk listWD3 3GF: not on the flood risk listWD3 3GH: not on the flood risk listWD3 3GJ: not on the flood risk listWD3 3GL: not on the flood risk listWD3 3GN: not on the flood risk listWD3 3GP: not on the flood risk listWD3 3GQ: not on the flood risk listWD3 3GS: not on the flood risk listWD3 3GT: not on the flood risk listWD3 3HA: not on the flood risk listWD3 3HE: not on the flood risk listWD3 3HG: not on the flood risk listWD3 3HJ: not on the flood risk listWD3 3HL: not on the flood risk listWD3 3HN: not on the flood risk listWD3 3HP: not on the flood risk listWD3 3HQ: not on the flood risk listWD3 3HR: not on the flood risk listWD3 3HS: not on the flood risk listWD3 3HT: not on the flood risk listWD3 3HU: not on the flood risk listWD3 3HX: not on the flood risk listWD3 3HY: not on the flood risk listWD3 3JA: not on the flood risk listWD3 3JB: not on the flood risk listWD3 3JD: not on the flood risk listWD3 3JF: not on the flood risk listWD3 3JH: not on the flood risk listWD3 3JJ: not on the flood risk listWD3 3JL: not on the flood risk listWD3 3JP: not on the flood risk listWD3 3JQ: not on the flood risk listWD3 3JS: not on the flood risk listWD3 3JT: not on the flood risk listWD3 3JW: not on the flood risk listWD3 3JX: not on the flood risk listWD3 3JY: not on the flood risk listWD3 3JZ: not on the flood risk listWD3 3LA: not on the flood risk listWD3 3LB: not on the flood risk listWD3 3LE: not on the flood risk listWD3 3LG: not on the flood risk listWD3 3LH: not on the flood risk listWD3 3LJ: not on the flood risk listWD3 3LL: not on the flood risk listWD3 3LN: not on the flood risk listWD3 3LP: not on the flood risk listWD3 3LQ: not on the flood risk listWD3 3LR: not on the flood risk listWD3 3LS: not on the flood risk listWD3 3LW: not on the flood risk listWD3 3LY: not on the flood risk listWD3 3LZ: not on the flood risk listWD3 3NA: not on the flood risk listWD3 3NE: not on the flood risk listWD3 3NH: not on the flood risk listWD3 3NJ: not on the flood risk listWD3 3NL: not on the flood risk listWD3 3NN: not on the flood risk listWD3 3NQ: not on the flood risk listWD3 3NR: not on the flood risk listWD3 3NS: not on the flood risk listWD3 3NW: not on the flood risk listWD3 3PA: not on the flood risk listWD3 3PB: not on the flood risk listWD3 3PD: not on the flood risk listWD3 3PE: not on the flood risk listWD3 3PF: not on the flood risk listWD3 3PG: not on the flood risk listWD3 3PH: not on the flood risk listWD3 3PJ: not on the flood risk listWD3 3PL: not on the flood risk listWD3 3PN: not on the flood risk listWD3 3PP: not on the flood risk listWD3 3PS: not on the flood risk listWD3 3PT: not on the flood risk listWD3 3PU: not on the flood risk listWD3 3PX: not on the flood risk listWD3 3QA: not on the flood risk listWD3 3QD: not on the flood risk listWD3 3QG: not on the flood risk listWD3 3QH: not on the flood risk listWD3 3QJ: not on the flood risk listWD3 3QN: not on the flood risk listWD3 3QP: not on the flood risk listWD3 3QQ: not on the flood risk listWD3 3QS: not on the flood risk listWD3 3QT: not on the flood risk listWD3 3QU: not on the flood risk listWD3 3QX: not on the flood risk listWD3 3QY: not on the flood risk listWD3 3RA: not on the flood risk listWD3 3RD: not on the flood risk listWD3 3RE: not on the flood risk listWD3 3RF: not on the flood risk listWD3 3RG: not on the flood risk listWD3 3RH: not on the flood risk listWD3 3RJ: not on the flood risk listWD3 3RL: not on the flood risk listWD3 3RN: not on the flood risk listWD3 3RP: not on the flood risk listWD3 3RQ: not on the flood risk listWD3 3RY: not on the flood risk listWD3 3RZ: not on the flood risk listWD3 3SA: not on the flood risk listWD3 3SB: not on the flood risk listWD3 3SD: not on the flood risk listWD3 3SF: not on the flood risk listWD3 3SG: not on the flood risk listWD3 3SJ: not on the flood risk listWD3 3SL: not on the flood risk listWD3 3SN: not on the flood risk listWD3 3SP: not on the flood risk listWD3 3SS: not on the flood risk listWD3 3ST: not on the flood risk listWD3 3SU: not on the flood risk listWD3 3SW: not on the flood risk listWD3 3SX: not on the flood risk listWD3 3SY: not on the flood risk listWD3 3TA: not on the flood risk listWD3 3TB: not on the flood risk listWD3 3TD: not on the flood risk listWD3 3TE: not on the flood risk listWD3 3TF: not on the flood risk listWD3 3TG: not on the flood risk listWD3 3TN: not on the flood risk listWD3 3TQ: not on the flood risk listWD3 3TT: not on the flood risk listWD3 3UA: not on the flood risk listWD3 3UF: not on the flood risk listWD3 4AA: not on the flood risk listWD3 4AB: not on the flood risk listWD3 4AD: not on the flood risk listWD3 4AE: not on the flood risk listWD3 4AF: not on the flood risk listWD3 4AG: not on the flood risk listWD3 4AH: not on the flood risk listWD3 4AL: not on the flood risk listWD3 4AN: not on the flood risk listWD3 4AP: not on the flood risk listWD3 4AQ: not on the flood risk listWD3 4AR: not on the flood risk listWD3 4AS: not on the flood risk listWD3 4AT: not on the flood risk listWD3 4AW: not on the flood risk listWD3 4AX: not on the flood risk listWD3 4AY: not on the flood risk listWD3 4AZ: not on the flood risk listWD3 4BA: not on the flood risk listWD3 4BB: not on the flood risk listWD3 4BD: not on the flood risk listWD3 4BE: not on the flood risk listWD3 4BG: not on the flood risk listWD3 4BH: not on the flood risk listWD3 4BJ: not on the flood risk listWD3 4BL: not on the flood risk listWD3 4BN: not on the flood risk listWD3 4BP: not on the flood risk listWD3 4BQ: not on the flood risk listWD3 4BR: not on the flood risk listWD3 4BS: not on the flood risk listWD3 4BT: not on the flood risk listWD3 4BU: not on the flood risk listWD3 4BW: not on the flood risk listWD3 4BX: not on the flood risk listWD3 4BY: not on the flood risk listWD3 4BZ: not on the flood risk listWD3 4DA: not on the flood risk listWD3 4DB: not on the flood risk listWD3 4DD: not on the flood risk listWD3 4DF: not on the flood risk listWD3 4DH: not on the flood risk listWD3 4DJ: not on the flood risk listWD3 4DN: not on the flood risk listWD3 4DP: not on the flood risk listWD3 4DS: not on the flood risk listWD3 4DT: not on the flood risk listWD3 4DU: not on the flood risk listWD3 4DW: not on the flood risk listWD3 4DX: not on the flood risk listWD3 4DY: not on the flood risk listWD3 4DZ: not on the flood risk listWD3 4EA: not on the flood risk listWD3 4EB: not on the flood risk listWD3 4ED: not on the flood risk listWD3 4EE: not on the flood risk listWD3 4EG: not on the flood risk listWD3 4EH: not on the flood risk listWD3 4EL: not on the flood risk listWD3 4EN: not on the flood risk listWD3 4EP: not on the flood risk listWD3 4ER: not on the flood risk listWD3 4ES: not on the flood risk listWD3 4ET: not on the flood risk listWD3 4EU: not on the flood risk listWD3 4EW: not on the flood risk listWD3 4EX: not on the flood risk listWD3 4EY: not on the flood risk listWD3 4EZ: not on the flood risk listWD3 4FF: not on the flood risk listWD3 4FR: not on the flood risk listWD3 4FW: not on the flood risk listWD3 4GX: not on the flood risk listWD3 4GZ: not on the flood risk listWD3 4HA: not on the flood risk listWD3 4HB: not on the flood risk listWD3 4HD: not on the flood risk listWD3 4HE: not on the flood risk listWD3 4HF: not on the flood risk listWD3 4HG: not on the flood risk listWD3 4HH: not on the flood risk listWD3 4HJ: not on the flood risk listWD3 4HL: not on the flood risk listWD3 4HN: not on the flood risk listWD3 4HP: not on the flood risk listWD3 4HQ: not on the flood risk listWD3 4HR: not on the flood risk listWD3 4HT: not on the flood risk listWD3 4HU: not on the flood risk listWD3 4HW: not on the flood risk listWD3 4HX: not on the flood risk listWD3 4HY: not on the flood risk listWD3 4JA: not on the flood risk listWD3 4JD: not on the flood risk listWD3 4JE: not on the flood risk listWD3 4JG: not on the flood risk listWD3 4JH: not on the flood risk listWD3 4JN: not on the flood risk listWD3 4JP: not on the flood risk listWD3 4JQ: not on the flood risk listWD3 4JR: not on the flood risk listWD3 4JS: not on the flood risk listWD3 4JU: not on the flood risk listWD3 4JW: not on the flood risk listWD3 4JX: not on the flood risk listWD3 4JY: not on the flood risk listWD3 4JZ: not on the flood risk listWD3 4LA: not on the flood risk listWD3 4LB: not on the flood risk listWD3 4LD: not on the flood risk listWD3 4LG: not on the flood risk listWD3 4LH: not on the flood risk listWD3 4LL: not on the flood risk listWD3 4LN: not on the flood risk listWD3 4LP: not on the flood risk listWD3 4LQ: not on the flood risk listWD3 4LR: not on the flood risk listWD3 4LS: not on the flood risk listWD3 4LT: not on the flood risk listWD3 4LU: not on the flood risk listWD3 4LW: not on the flood risk listWD3 4LX: not on the flood risk listWD3 4LY: not on the flood risk listWD3 4LZ: not on the flood risk listWD3 4NA: not on the flood risk listWD3 4NB: not on the flood risk listWD3 4ND: not on the flood risk listWD3 4NE: not on the flood risk listWD3 4NF: not on the flood risk listWD3 4NG: not on the flood risk listWD3 4NH: not on the flood risk listWD3 4NJ: not on the flood risk listWD3 4NL: not on the flood risk listWD3 4NN: not on the flood risk listWD3 4NP: not on the flood risk listWD3 4NQ: not on the flood risk listWD3 4NR: not on the flood risk listWD3 4NS: not on the flood risk listWD3 4NT: not on the flood risk listWD3 4NU: not on the flood risk listWD3 4NX: not on the flood risk listWD3 4NY: not on the flood risk listWD3 4PA: not on the flood risk listWD3 4PB: not on the flood risk listWD3 4PD: not on the flood risk listWD3 4PQ: not on the flood risk listWD3 4PT: not on the flood risk listWD3 4QP: not on the flood risk listWD3 4RD: not on the flood risk listWD3 4TG: not on the flood risk listWD3 5AA: not on the flood risk listWD3 5AB: not on the flood risk listWD3 5AD: not on the flood risk listWD3 5AE: not on the flood risk listWD3 5AG: not on the flood risk listWD3 5AH: not on the flood risk listWD3 5AJ: not on the flood risk listWD3 5AN: not on the flood risk listWD3 5AP: not on the flood risk listWD3 5AQ: not on the flood risk listWD3 5AR: not on the flood risk listWD3 5AS: not on the flood risk listWD3 5AW: not on the flood risk listWD3 5AX: not on the flood risk listWD3 5AY: not on the flood risk listWD3 5AZ: not on the flood risk listWD3 5BA: not on the flood risk listWD3 5BB: not on the flood risk listWD3 5BD: not on the flood risk listWD3 5BG: not on the flood risk listWD3 5BH: not on the flood risk listWD3 5BJ: not on the flood risk listWD3 5BN: not on the flood risk listWD3 5BP: not on the flood risk listWD3 5BQ: not on the flood risk listWD3 5BS: not on the flood risk listWD3 5BT: not on the flood risk listWD3 5BU: not on the flood risk listWD3 5BX: not on the flood risk listWD3 5BY: not on the flood risk listWD3 5DA: not on the flood risk listWD3 5DB: not on the flood risk listWD3 5DD: not on the flood risk listWD3 5DE: not on the flood risk listWD3 5DF: not on the flood risk listWD3 5DG: not on the flood risk listWD3 5DH: not on the flood risk listWD3 5DL: not on the flood risk listWD3 5DN: not on the flood risk listWD3 5DP: not on the flood risk listWD3 5DQ: not on the flood risk listWD3 5DR: not on the flood risk listWD3 5DT: not on the flood risk listWD3 5DU: not on the flood risk listWD3 5DW: not on the flood risk listWD3 5DY: not on the flood risk listWD3 5DZ: not on the flood risk listWD3 5EA: not on the flood risk listWD3 5EB: not on the flood risk listWD3 5EE: not on the flood risk listWD3 5EF: not on the flood risk listWD3 5EG: not on the flood risk listWD3 5EH: not on the flood risk listWD3 5EJ: not on the flood risk listWD3 5EL: not on the flood risk listWD3 5EN: not on the flood risk listWD3 5EQ: not on the flood risk listWD3 5ER: not on the flood risk listWD3 5ES: not on the flood risk listWD3 5ET: not on the flood risk listWD3 5EU: not on the flood risk listWD3 5EW: not on the flood risk listWD3 5EX: not on the flood risk listWD3 5EY: not on the flood risk listWD3 5EZ: not on the flood risk listWD3 5FD: not on the flood risk listWD3 5FE: not on the flood risk listWD3 5FF: not on the flood risk listWD3 5FH: not on the flood risk listWD3 5FJ: not on the flood risk listWD3 5FL: not on the flood risk listWD3 5FN: not on the flood risk listWD3 5GA: not on the flood risk listWD3 5GB: not on the flood risk listWD3 5GD: not on the flood risk listWD3 5GE: not on the flood risk listWD3 5GF: not on the flood risk listWD3 5GH: not on the flood risk listWD3 5GJ: not on the flood risk listWD3 5GY: not on the flood risk listWD3 5HA: not on the flood risk listWD3 5HB: not on the flood risk listWD3 5HD: not on the flood risk listWD3 5HF: not on the flood risk listWD3 5HG: not on the flood risk listWD3 5HN: not on the flood risk listWD3 5HP: not on the flood risk listWD3 5HQ: not on the flood risk listWD3 5HT: not on the flood risk listWD3 5HU: not on the flood risk listWD3 5HW: not on the flood risk listWD3 5HX: not on the flood risk listWD3 5HY: not on the flood risk listWD3 5JA: not on the flood risk listWD3 5JB: not on the flood risk listWD3 5JH: not on the flood risk listWD3 5JJ: not on the flood risk listWD3 5JL: not on the flood risk listWD3 5JN: not on the flood risk listWD3 5JP: not on the flood risk listWD3 5JS: not on the flood risk listWD3 5JT: not on the flood risk listWD3 5JU: not on the flood risk listWD3 5JX: not on the flood risk listWD3 5JY: not on the flood risk listWD3 5JZ: not on the flood risk listWD3 5LA: not on the flood risk listWD3 5LF: not on the flood risk listWD3 5LH: not on the flood risk listWD3 5LL: not on the flood risk listWD3 5LN: not on the flood risk listWD3 5LP: not on the flood risk listWD3 5LQ: not on the flood risk listWD3 5LS: not on the flood risk listWD3 5LT: not on the flood risk listWD3 5LU: not on the flood risk listWD3 5LW: not on the flood risk listWD3 5LX: not on the flood risk listWD3 5LY: not on the flood risk listWD3 5NA: not on the flood risk listWD3 5NE: not on the flood risk listWD3 5NF: not on the flood risk listWD3 5NH: not on the flood risk listWD3 5NJ: not on the flood risk listWD3 5NN: not on the flood risk listWD3 5NP: not on the flood risk listWD3 5NQ: not on the flood risk listWD3 5NR: not on the flood risk listWD3 5NS: not on the flood risk listWD3 5NT: not on the flood risk listWD3 5NU: not on the flood risk listWD3 5NX: not on the flood risk listWD3 5NY: not on the flood risk listWD3 5NZ: not on the flood risk listWD3 5PB: not on the flood risk listWD3 5PE: not on the flood risk listWD3 5PG: not on the flood risk listWD3 5PJ: not on the flood risk listWD3 5PN: not on the flood risk listWD3 5PP: not on the flood risk listWD3 5PQ: not on the flood risk listWD3 5PR: not on the flood risk listWD3 5PS: not on the flood risk listWD3 5PT: not on the flood risk listWD3 5PU: not on the flood risk listWD3 5PW: not on the flood risk listWD3 5PX: not on the flood risk listWD3 5PY: not on the flood risk listWD3 5QA: not on the flood risk listWD3 5QB: not on the flood risk listWD3 5QD: not on the flood risk listWD3 5QE: not on the flood risk listWD3 5QG: not on the flood risk listWD3 5QH: not on the flood risk listWD3 5QJ: not on the flood risk listWD3 5QL: not on the flood risk listWD3 5QN: not on the flood risk listWD3 5QR: not on the flood risk listWD3 5QS: not on the flood risk listWD3 5QT: not on the flood risk listWD3 5QW: not on the flood risk listWD3 5RA: not on the flood risk listWD3 5RD: not on the flood risk listWD3 5RG: not on the flood risk listWD3 5RH: not on the flood risk listWD3 5RJ: not on the flood risk listWD3 5RL: not on the flood risk listWD3 5RQ: not on the flood risk listWD3 5RR: not on the flood risk listWD3 5RS: not on the flood risk listWD3 5RU: not on the flood risk listWD3 5SA: not on the flood risk listWD3 5SB: not on the flood risk listWD3 5SD: not on the flood risk listWD3 5SE: not on the flood risk listWD3 5SF: not on the flood risk listWD3 5SG: not on the flood risk listWD3 5SL: not on the flood risk listWD3 5SN: not on the flood risk listWD3 5SP: not on the flood risk listWD3 5SQ: not on the flood risk listWD3 5SR: not on the flood risk listWD3 5ST: not on the flood risk listWD3 5SU: not on the flood risk listWD3 5SX: not on the flood risk listWD3 5SY: not on the flood risk listWD3 5TA: not on the flood risk listWD3 5TB: not on the flood risk listWD3 5TD: not on the flood risk listWD3 5TE: not on the flood risk listWD3 5TF: not on the flood risk listWD3 5TG: not on the flood risk listWD3 5TH: not on the flood risk listWD3 5TL: not on the flood risk listWD3 5TN: not on the flood risk listWD3 5TQ: not on the flood risk listWD3 6AA: not on the flood risk listWD3 6AB: not on the flood risk listWD3 6AD: not on the flood risk listWD3 6AE: not on the flood risk listWD3 6AF: not on the flood risk listWD3 6AH: not on the flood risk listWD3 6AJ: not on the flood risk listWD3 6AL: not on the flood risk listWD3 6AN: not on the flood risk listWD3 6AP: not on the flood risk listWD3 6AQ: not on the flood risk listWD3 6AR: not on the flood risk listWD3 6AS: not on the flood risk listWD3 6AT: not on the flood risk listWD3 6AU: not on the flood risk listWD3 6AW: not on the flood risk listWD3 6AX: not on the flood risk listWD3 6AY: not on the flood risk listWD3 6AZ: not on the flood risk listWD3 6BA: not on the flood risk listWD3 6BB: not on the flood risk listWD3 6BD: not on the flood risk listWD3 6BG: not on the flood risk listWD3 6BH: not on the flood risk listWD3 6BJ: not on the flood risk listWD3 6BL: not on the flood risk listWD3 6BN: not on the flood risk listWD3 6BP: not on the flood risk listWD3 6BQ: not on the flood risk listWD3 6BR: not on the flood risk listWD3 6BS: not on the flood risk listWD3 6BU: not on the flood risk listWD3 6BW: not on the flood risk listWD3 6BX: not on the flood risk listWD3 6BZ: not on the flood risk listWD3 6DA: not on the flood risk listWD3 6DB: not on the flood risk listWD3 6DD: not on the flood risk listWD3 6DL: not on the flood risk listWD3 6DN: not on the flood risk listWD3 6DP: not on the flood risk listWD3 6EA: not on the flood risk listWD3 6EB: not on the flood risk listWD3 6ED: not on the flood risk listWD3 6EE: not on the flood risk listWD3 6EG: not on the flood risk listWD3 6EH: not on the flood risk listWD3 6EJ: not on the flood risk listWD3 6EL: not on the flood risk listWD3 6EN: not on the flood risk listWD3 6EP: not on the flood risk listWD3 6EQ: not on the flood risk listWD3 6ER: not on the flood risk listWD3 6ES: not on the flood risk listWD3 6ET: not on the flood risk listWD3 6EW: not on the flood risk listWD3 6EX: not on the flood risk listWD3 6EY: not on the flood risk listWD3 6FA: not on the flood risk listWD3 6HD: not on the flood risk listWD3 6HE: not on the flood risk listWD3 6HH: not on the flood risk listWD3 6HJ: not on the flood risk listWD3 6HL: not on the flood risk listWD3 6HN: not on the flood risk listWD3 7AN: not on the flood risk listWD3 7AP: not on the flood risk listWD3 7AR: not on the flood risk listWD3 7AT: not on the flood risk listWD3 7AU: not on the flood risk listWD3 7AW: not on the flood risk listWD3 7AX: not on the flood risk listWD3 7AY: not on the flood risk listWD3 7BB: not on the flood risk listWD3 7BD: not on the flood risk listWD3 7BE: not on the flood risk listWD3 7BG: not on the flood risk listWD3 7BT: not on the flood risk listWD3 7BX: not on the flood risk listWD3 7BY: not on the flood risk listWD3 7BZ: not on the flood risk listWD3 7DA: not on the flood risk listWD3 7DB: not on the flood risk listWD3 7DD: not on the flood risk listWD3 7DF: not on the flood risk listWD3 7DG: not on the flood risk listWD3 7DL: not on the flood risk listWD3 7DN: not on the flood risk listWD3 7DQ: not on the flood risk listWD3 7DW: not on the flood risk listWD3 7DY: not on the flood risk listWD3 7DZ: not on the flood risk listWD3 7EE: not on the flood risk listWD3 7EG: not on the flood risk listWD3 7EH: not on the flood risk listWD3 7EJ: not on the flood risk listWD3 7EL: not on the flood risk listWD3 7EP: not on the flood risk listWD3 7ER: not on the flood risk listWD3 7ES: not on the flood risk listWD3 7ET: not on the flood risk listWD3 7EU: not on the flood risk listWD3 7EW: not on the flood risk listWD3 7EX: not on the flood risk listWD3 7EY: not on the flood risk listWD3 7EZ: not on the flood risk listWD3 7GF: not on the flood risk listWD3 7HA: not on the flood risk listWD3 7HG: not on the flood risk listWD3 7HH: not on the flood risk listWD3 7HJ: not on the flood risk listWD3 7HN: not on the flood risk listWD3 7HQ: not on the flood risk listWD3 7HU: not on the flood risk listWD3 7NG: not on the flood risk listWD3 7NH: not on the flood risk listWD3 7NJ: not on the flood risk listWD3 7NL: not on the flood risk listWD3 7NP: not on the flood risk listWD3 7NQ: not on the flood risk listWD3 7NR: not on the flood risk listWD3 7NS: not on the flood risk listWD3 7NU: not on the flood risk listWD3 7NW: not on the flood risk listWD3 7NX: not on the flood risk listWD3 7NY: not on the flood risk listWD3 7NZ: not on the flood risk listWD3 7PA: not on the flood risk listWD3 7PB: not on the flood risk listWD3 7PE: not on the flood risk listWD3 7PF: not on the flood risk listWD3 7PG: not on the flood risk listWD3 7PH: not on the flood risk listWD3 7PJ: not on the flood risk listWD3 7PP: not on the flood risk listWD3 7PQ: not on the flood risk listWD3 7PR: not on the flood risk listWD3 8AB: not on the flood risk listWD3 8AD: not on the flood risk listWD3 8BN: not on the flood risk listWD3 8BP: not on the flood risk listWD3 8BQ: not on the flood risk listWD3 8BS: not on the flood risk listWD3 8BW: not on the flood risk listWD3 8DL: not on the flood risk listWD3 8DP: not on the flood risk listWD3 8DT: not on the flood risk listWD3 8DX: not on the flood risk listWD3 8EA: not on the flood risk listWD3 8EB: not on the flood risk listWD3 8EF: not on the flood risk listWD3 8FJ: not on the flood risk listWD3 8FL: not on the flood risk listWD3 8GL: not on the flood risk listWD3 8GN: not on the flood risk listWD3 8GP: not on the flood risk listWD3 8HD: not on the flood risk listWD3 8HE: not on the flood risk listWD3 8HS: not on the flood risk listWD3 8HU: not on the flood risk listWD3 8HY: not on the flood risk listWD3 8HZ: not on the flood risk listWD3 8JA: not on the flood risk listWD3 8JB: not on the flood risk listWD3 8JD: not on the flood risk listWD3 8JE: not on the flood risk listWD3 8JF: not on the flood risk listWD3 8JH: not on the flood risk listWD3 8JN: not on the flood risk listWD3 8JS: not on the flood risk listWD3 8JW: not on the flood risk listWD3 8JX: not on the flood risk listWD3 8JY: not on the flood risk listWD3 8JZ: not on the flood risk listWD3 8LB: not on the flood risk listWD3 8LD: not on the flood risk listWD3 8LE: not on the flood risk listWD3 8LH: not on the flood risk listWD3 8LL: not on the flood risk listWD3 8LP: not on the flood risk listWD3 8LQ: not on the flood risk listWD3 8LR: not on the flood risk listWD3 8LS: not on the flood risk listWD3 8LT: not on the flood risk listWD3 8LU: not on the flood risk listWD3 8LX: not on the flood risk listWD3 8LY: not on the flood risk listWD3 8NA: not on the flood risk listWD3 8ND: not on the flood risk listWD3 8NE: not on the flood risk listWD3 8PS: not on the flood risk listWD3 8PT: not on the flood risk listWD3 8PU: not on the flood risk listWD3 8PX: not on the flood risk listWD3 8PY: not on the flood risk listWD3 8QA: not on the flood risk listWD3 8QD: not on the flood risk listWD3 8QF: not on the flood risk listWD3 8QG: not on the flood risk listWD3 8QJ: not on the flood risk listWD3 8QL: not on the flood risk listWD3 8QP: not on the flood risk listWD3 8QR: not on the flood risk listWD3 8QS: not on the flood risk listWD3 8QU: not on the flood risk listWD3 8QX: not on the flood risk listWD3 8QY: not on the flood risk listWD3 8RB: not on the flood risk listWD3 8RD: not on the flood risk listWD3 8RL: not on the flood risk listWD3 8RQ: not on the flood risk listWD3 8RS: not on the flood risk listWD3 8RW: not on the flood risk listWD3 8SB: not on the flood risk listWD3 8UG: not on the flood risk listWD3 8US: not on the flood risk listWD3 8UU: not on the flood risk listWD3 8UY: not on the flood risk listWD3 8XA: not on the flood risk listWD3 8YE: not on the flood risk listWD3 8YF: not on the flood risk listWD3 8YG: not on the flood risk listWD3 8YH: not on the flood risk listWD3 8YL: not on the flood risk listWD3 8YQ: not on the flood risk listWD3 9AA: not on the flood risk listWD3 9AE: not on the flood risk listWD3 9AF: not on the flood risk listWD3 9AG: not on the flood risk listWD3 9GA: not on the flood risk listWD3 9RE: not on the flood risk listWD3 9RF: not on the flood risk listWD3 9RN: not on the flood risk listWD3 9RP: not on the flood risk listWD3 9SE: not on the flood risk listWD3 9SF: not on the flood risk listWD3 9SL: not on the flood risk listWD3 9SP: not on the flood risk listWD3 9SR: not on the flood risk listWD3 9SS: not on the flood risk listWD3 9ST: not on the flood risk listWD3 9SU: not on the flood risk listWD3 9SY: not on the flood risk listWD3 9TA: not on the flood risk listWD3 9TB: not on the flood risk listWD3 9TD: not on the flood risk listWD3 9TE: not on the flood risk listWD3 9TF: not on the flood risk listWD3 9TH: not on the flood risk listWD3 9TJ: not on the flood risk listWD3 9TL: not on the flood risk listWD3 9TN: not on the flood risk listWD3 9TP: not on the flood risk listWD3 9TQ: not on the flood risk listWD3 9TS: not on the flood risk listWD3 9TT: not on the flood risk listWD3 9TU: not on the flood risk listWD3 9TW: not on the flood risk listWD3 9TX: not on the flood risk listWD3 9TZ: not on the flood risk listWD3 9UA: not on the flood risk listWD3 9UE: not on the flood risk listWD3 9UF: not on the flood risk listWD3 9UH: not on the flood risk listWD3 9UJ: not on the flood risk listWD3 9UQ: not on the flood risk listWD3 9XD: not on the flood risk listWD3 9XH: not on the flood risk listWD3 9XL: not on the flood risk listWD3 9XN: not on the flood risk listWD3 9XP: not on the flood risk listWD3 9XQ: not on the flood risk listWD3 9XW: not on the flood risk listWD3 9YZ: not on the flood risk listWD3 1AT: very low flood risk onlyWD3 1BH: very low flood risk onlyWD3 9SN: very low flood risk onlyWD3 9YS: very low flood risk onlyWD3 1BJ: low flood risk at worstWD3 1BL: low flood risk at worstWD3 1BQ: low flood risk at worstWD3 1DR: low flood risk at worstWD3 1HP: low flood risk at worstWD3 1EQ: low flood risk at worstWD3 1FU: low flood risk at worstWD3 1GH: low flood risk at worstWD3 1HT: low flood risk at worstWD3 1HW: low flood risk at worstWD3 3AB: low flood risk at worstWD3 3RT: low flood risk at worstWD3 3RU: low flood risk at worstWD3 6EU: low flood risk at worstWD3 6HB: low flood risk at worstWD3 7DH: low flood risk at worstWD3 8YY: low flood risk at worstWD3 9AD: low flood risk at worstWD3 9XR: low flood risk at worstWD3 9YA: low flood risk at worstWD3 1ED: medium flood risk at worstWD3 1HG: medium flood risk at worstWD3 1HB: medium flood risk at worstWD3 1BP: medium flood risk at worstWD3 1FS: medium flood risk at worstWD3 1JB: medium flood risk at worstWD3 1JQ: medium flood risk at worstWD3 1NP: medium flood risk at worstWD3 9WZ: medium flood risk at worstWD3 9XT: medium flood risk at worstWD3 9XX: medium flood risk at worstWD3 1DT: high flood riskWD3 1BS: high flood riskWD3 1DD: high flood riskWD3 1DF: high flood riskWD3 1DP: high flood riskWD3 1DQ: high flood riskWD3 1HE: high flood riskWD3 1LB: high flood riskWD3 1FR: high flood riskWD3 1GF: high flood riskWD3 1GG: high flood riskWD3 1HD: high flood riskWD3 1JJ: high flood riskWD3 1JE: high flood riskWD3 1SZ: high flood riskWD3 1JW: high flood riskWD3 1JY: high flood riskWD3 1LE: high flood riskWD3 1LF: high flood riskWD3 1LP: high flood riskWD3 1LR: high flood riskWD3 1LU: high flood riskWD3 1LX: high flood riskWD3 1LY: high flood riskWD3 1LZ: high flood riskWD3 1NA: high flood riskWD3 1NB: high flood riskWD3 1ND: high flood riskWD3 1NE: high flood riskWD3 1NF: high flood riskWD3 1NG: high flood riskWD3 1NQ: high flood riskWD3 1NS: high flood riskWD3 1NU: high flood riskWD3 1NZ: high flood riskWD3 1TA: high flood riskWD3 3AD: high flood riskWD3 3BG: high flood riskWD3 3BQ: high flood riskWD3 3EW: high flood riskWD3 3GG: high flood riskWD3 5SS: high flood riskWD3 6HA: high flood riskWD3 8DS: high flood riskWD3 8FE: high flood riskWD3 8UE: high flood riskWD3 8UF: high flood riskWD3 8UR: high flood riskWD3 8UW: high flood riskWD3 8UX: high flood riskWD3 8XD: high flood riskWD3 9SQ: high flood riskWD3 9XJ: high flood riskWD3 9XS: high flood riskWD3 9XY: high flood riskWD3 9YB: high flood riskWD3 9YD: high flood risk RickmansworthChorleywoodMoor ParkMaple Cross 51 postcodes at high or medium risk, outlined: this goes to WD3 1JY, the one with most homes and businesses at high risk51 postcodes at high or medium risk5 postcodes at high or medium risk, outlined: this goes to WD3 9XY, the one with most homes and businesses at high risk5 postcodes at high or medium risk Map of every postcode in WD3, by flood risk Of the 1,280 postcodes in WD3 that ONS places, 68 have a home or business at high risk, 14 are at medium risk at worst, 31 are at low risk at worst, 7 are at very low risk only and 1,160 are not on the Environment Agency's at-risk list. 2 groups of postcodes at high or medium risk are outlined: 51 postcodes at high or medium risk; 5 postcodes at high or medium risk. Places named: Rickmansworth, Chorleywood, Maple Cross. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2 km. M25A4180A41 RickmansworthChorleywoodMaple Cross
  • A home or business at high risk: 68
  • At medium risk at worst: 14
  • At low risk at worst: 31
  • At very low risk only: 7
  • Not on the at-risk list: 1,160
  • Outline: where 5 or more postcodes at high or medium risk lie together

Of the 1,280 postcodes in WD3 that ONS places, 68 have a home or business at high risk, 14 are at medium risk at worst, 31 are at low risk at worst, 7 are at very low risk only and 1,160 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 51.6468, longitude -0.4824. 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

68 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.

WD3 1JY43 at high riskWD3 1LA43 at high riskWD3 1GG27 at high riskWD3 1NF22 at high riskWD3 1HE20 at high riskWD3 8UE18 at high riskWD3 1NS17 at high riskWD3 1HD16 at high riskWD3 1NE16 at high riskWD3 8UZ15 at high riskWD3 1TA13 at high riskWD3 1NA11 at high risk

Where the postcodes at high or medium risk lie together

  • 51 postcodes at high or medium risk, outlined on the map. WD3 1JY, is the one with most homes and businesses at high risk.
  • 5 postcodes at high or medium risk, outlined on the map. WD3 9XY, is the one with most homes and businesses at high risk.

What broadband can you get in WD3?

Ofcom reports on 1,208 of the 1,281 postcodes in WD3. At 981 of them every home and business can get gigabit broadband, and at 4 some cannot get decent broadband (10 Mbit/s).

Postcodes where every home can get gigabit981 of 1,208
Postcodes where every home can get superfast1,113 of 1,208
Postcodes where some cannot get decent broadband4 of 1,208

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 WD3 at risk of flooding?

120 of the 1,281 postcodes in WD3 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 683 homes and businesses in an area at high or medium risk.

Homes and businesses in an area at risk, at 120 of 1,281 postcodes High: 452Medium: 231Low: 415Very low: 81

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 WD3?

Homes in WD3 sold for a typical £639,000 in the 12 months to August 2026, across 435 sales, up 1.4% on the 12 months before, HM Land Registry's figures show.

£639,000 typical price, the 12 months to August 2026
£630,000 12 months to August 2025
▲ up 1.4% on the 12 months before
  • Detached £1,068,750 118 sales
  • Semi-detached £657,500 161 sales
  • Terraced £510,000 81 sales
  • Flat or maisonette £315,000 75 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 WD3

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

WD3 039 postcodesWD3 1197 postcodesWD3 21 postcodeWD3 3270 postcodesWD3 4162 postcodesWD3 5241 postcodesWD3 669 postcodesWD3 795 postcodesWD3 8133 postcodesWD3 974 postcodes
UK postcode format explained

Places in WD3

Towns and villages with postcodes in WD3, and how many each has here.

Rickmansworth postcodes,672Chorleywood postcodes,380Maple Cross postcodes,52Chipperfield postcodes,8Moor Park postcodes,7Hillingdon postcodes,3

Who covers WD3

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

  • South West Hertfordshire1,250
  • Chesham and Amersham20
  • Ruislip, Northwood and Pinner9
  • Watford1

Police force areas

  • Hertfordshire1,251
  • Thames Valley20
  • Metropolitan Police9

Next to WD3

WD4 postcode district All WD districts Rickmansworth postcodes

"Next to" is by number: the district after WD3 in the WD area.

Check a postcode

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