CM3 postcode district: South Woodham Ferrers and around, Essex

CM3 is a postcode district in Essex, with 1,588 postcodes in use in 9 sectors. It has postcodes in South Woodham Ferrers, Danbury, Hatfield Peverel and 4 more places. It is split between 4 councils: Chelmsford (1,037 postcodes), Maldon (285), Braintree (238) and 1 other.

Postcodes in use
1,588
Sectors
9
Councils
4 councils
Places
7 places

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

Every postcode in CM3, by flood risk

Map of every postcode in CM3, by flood risk Of the 1,588 postcodes in CM3 that ONS places, 49 have a home or business at high risk, 19 are at medium risk at worst, 37 are at low risk at worst, 49 are at very low risk only and 1,434 are not on the Environment Agency's at-risk list. One group of postcodes at high or medium risk is outlined: 6 postcodes at high or medium risk. Places named: South Woodham Ferrers, Chelmsford, Witham, Maldon, Tiptree, Great Notley. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 5 km. A1060A12 CM3 1AA: not on the flood risk listCM3 1AB: not on the flood risk listCM3 1AD: not on the flood risk listCM3 1AJ: not on the flood risk listCM3 1AX: not on the flood risk listCM3 1AZ: not on the flood risk listCM3 1BD: not on the flood risk listCM3 1BE: not on the flood risk listCM3 1BJ: not on the flood risk listCM3 1BL: not on the flood risk listCM3 1BU: not on the flood risk listCM3 1BW: not on the flood risk listCM3 1BX: not on the flood risk listCM3 1BY: not on the flood risk listCM3 1BZ: not on the flood risk listCM3 1DB: not on the flood risk listCM3 1DD: not on the flood risk listCM3 1DF: not on the flood risk listCM3 1DH: not on the flood risk listCM3 1DP: not on the flood risk listCM3 1DR: not on the flood risk listCM3 1DT: not on the flood risk listCM3 1DZ: not on the flood risk listCM3 1EA: not on the flood risk listCM3 1EB: not on the flood risk listCM3 1ED: not on the flood risk listCM3 1EE: not on the flood risk listCM3 1EF: not on the flood risk listCM3 1EG: not on the flood risk listCM3 1EH: not on the flood risk listCM3 1EJ: not on the flood risk listCM3 1EL: not on the flood risk listCM3 1EN: not on the flood risk listCM3 1ER: not on the flood risk listCM3 1ES: not on the flood risk listCM3 1EW: not on the flood risk listCM3 1FA: not on the flood risk listCM3 1FE: not on the flood risk listCM3 1FF: not on the flood risk listCM3 1FJ: not on the flood risk listCM3 1FL: not on the flood risk listCM3 1FQ: not on the flood risk listCM3 1FS: not on the flood risk listCM3 1FX: not on the flood risk listCM3 1GS: not on the flood risk listCM3 1GT: not on the flood risk listCM3 1GY: not on the flood risk listCM3 1HA: not on the flood risk listCM3 1HB: not on the flood risk listCM3 1HF: not on the flood risk listCM3 1HH: not on the flood risk listCM3 1HN: not on the flood risk listCM3 1HP: not on the flood risk listCM3 1HQ: not on the flood risk listCM3 1HR: not on the flood risk listCM3 1HS: not on the flood risk listCM3 1HT: not on the flood risk listCM3 1HU: not on the flood risk listCM3 1HW: not on the flood risk listCM3 1HX: not on the flood risk listCM3 1HY: not on the flood risk listCM3 1HZ: not on the flood risk listCM3 1JA: not on the flood risk listCM3 1JB: not on the flood risk listCM3 1JD: not on the flood risk listCM3 1JE: not on the flood risk listCM3 1JF: not on the flood risk listCM3 1JJ: not on the flood risk listCM3 1JQ: not on the flood risk listCM3 1JR: not on the flood risk listCM3 1JS: not on the flood risk listCM3 1JY: not on the flood risk listCM3 1LB: not on the flood risk listCM3 1LD: not on the flood risk listCM3 1LE: not on the flood risk listCM3 1LF: not on the flood risk listCM3 1LG: not on the flood risk listCM3 1LH: not on the flood risk listCM3 1LN: not on the flood risk listCM3 1LP: not on the flood risk listCM3 1LQ: not on the flood risk listCM3 1LW: not on the flood risk listCM3 1LX: not on the flood risk listCM3 1LY: not on the flood risk listCM3 1LZ: not on the flood risk listCM3 1NA: not on the flood risk listCM3 1NF: not on the flood risk listCM3 1NG: not on the flood risk listCM3 1NL: not on the flood risk listCM3 1NS: not on the flood risk listCM3 1NW: not on the flood risk listCM3 1PA: not on the flood risk listCM3 1PB: not on the flood risk listCM3 1PD: not on the flood risk listCM3 1PE: not on the flood risk listCM3 1PF: not on the flood risk listCM3 1PG: not on the flood risk listCM3 1PH: not on the flood risk listCM3 1PJ: not on the flood risk listCM3 1PL: not on the flood risk listCM3 1PN: not on the flood risk listCM3 1PP: not on the flood risk listCM3 1PQ: not on the flood risk listCM3 1PR: not on the flood risk listCM3 1PS: not on the flood risk listCM3 1PU: not on the flood risk listCM3 1PW: not on the flood risk listCM3 1PX: not on the flood risk listCM3 1PZ: not on the flood risk listCM3 1QA: not on the flood risk listCM3 1QB: not on the flood risk listCM3 1QE: not on the flood risk listCM3 1QG: not on the flood risk listCM3 1QH: not on the flood risk listCM3 1QJ: not on the flood risk listCM3 1QL: not on the flood risk listCM3 1QN: not on the flood risk listCM3 1QQ: not on the flood risk listCM3 1QR: not on the flood risk listCM3 1QW: not on the flood risk listCM3 1RD: not on the flood risk listCM3 1RT: not on the flood risk listCM3 1SG: not on the flood risk listCM3 1TG: not on the flood risk listCM3 2AA: not on the flood risk listCM3 2AB: not on the flood risk listCM3 2AD: not on the flood risk listCM3 2AF: not on the flood risk listCM3 2AG: not on the flood risk listCM3 2AJ: not on the flood risk listCM3 2AL: not on the flood risk listCM3 2AN: not on the flood risk listCM3 2AP: not on the flood risk listCM3 2AR: not on the flood risk listCM3 2AT: not on the flood risk listCM3 2AU: not on the flood risk listCM3 2AW: not on the flood risk listCM3 2AY: not on the flood risk listCM3 2AZ: not on the flood risk listCM3 2BB: not on the flood risk listCM3 2BD: not on the flood risk listCM3 2BE: not on the flood risk listCM3 2BF: not on the flood risk listCM3 2BG: not on the flood risk listCM3 2BH: not on the flood risk listCM3 2BJ: not on the flood risk listCM3 2BL: not on the flood risk listCM3 2BN: not on the flood risk listCM3 2BP: not on the flood risk listCM3 2BQ: not on the flood risk listCM3 2BS: not on the flood risk listCM3 2BT: not on the flood risk listCM3 2BU: not on the flood risk listCM3 2BW: not on the flood risk listCM3 2BX: not on the flood risk listCM3 2BY: not on the flood risk listCM3 2BZ: not on the flood risk listCM3 2DA: not on the flood risk listCM3 2DB: not on the flood risk listCM3 2DE: not on the flood risk listCM3 2DJ: not on the flood risk listCM3 2DP: not on the flood risk listCM3 2DX: not on the flood risk listCM3 2DY: not on the flood risk listCM3 2EF: not on the flood risk listCM3 2EL: not on the flood risk listCM3 2ER: not on the flood risk listCM3 2ET: not on the flood risk listCM3 2EX: not on the flood risk listCM3 2EY: not on the flood risk listCM3 2EZ: not on the flood risk listCM3 2FE: not on the flood risk listCM3 2FF: not on the flood risk listCM3 2FJ: not on the flood risk listCM3 2FR: not on the flood risk listCM3 2GD: not on the flood risk listCM3 2GE: not on the flood risk listCM3 2GN: not on the flood risk listCM3 2GP: not on the flood risk listCM3 2HG: not on the flood risk listCM3 2HP: not on the flood risk listCM3 2HR: not on the flood risk listCM3 2HS: not on the flood risk listCM3 2JF: not on the flood risk listCM3 2JG: not on the flood risk listCM3 2JJ: not on the flood risk listCM3 2JL: not on the flood risk listCM3 2JP: not on the flood risk listCM3 2JW: not on the flood risk listCM3 2LB: not on the flood risk listCM3 2LE: not on the flood risk listCM3 2LS: not on the flood risk listCM3 2LU: not on the flood risk listCM3 2LX: not on the flood risk listCM3 2LZ: not on the flood risk listCM3 2NH: not on the flood risk listCM3 2NR: not on the flood risk listCM3 2NS: not on the flood risk listCM3 2NT: not on the flood risk listCM3 2NX: not on the flood risk listCM3 2NY: not on the flood risk listCM3 2NZ: not on the flood risk listCM3 2PG: not on the flood risk listCM3 2PH: not on the flood risk listCM3 2PJ: not on the flood risk listCM3 2PU: not on the flood risk listCM3 2PZ: not on the flood risk listCM3 2QA: not on the flood risk listCM3 2QD: not on the flood risk listCM3 2QP: not on the flood risk listCM3 2QQ: not on the flood risk listCM3 2QR: not on the flood risk listCM3 2QS: not on the flood risk listCM3 2QT: not on the flood risk listCM3 2QU: not on the flood risk listCM3 2QY: not on the flood risk listCM3 2QZ: not on the flood risk listCM3 2RA: not on the flood risk listCM3 2RL: not on the flood risk listCM3 3AA: not on the flood risk listCM3 3AB: not on the flood risk listCM3 3AD: not on the flood risk listCM3 3AE: not on the flood risk listCM3 3AH: not on the flood risk listCM3 3AL: not on the flood risk listCM3 3AN: not on the flood risk listCM3 3AR: not on the flood risk listCM3 3AS: not on the flood risk listCM3 3AW: not on the flood risk listCM3 3AX: not on the flood risk listCM3 3AZ: not on the flood risk listCM3 3BA: not on the flood risk listCM3 3BB: not on the flood risk listCM3 3BE: not on the flood risk listCM3 3BG: not on the flood risk listCM3 3BN: not on the flood risk listCM3 3BP: not on the flood risk listCM3 3BS: not on the flood risk listCM3 3BU: not on the flood risk listCM3 3BW: not on the flood risk listCM3 3BZ: not on the flood risk listCM3 3DE: not on the flood risk listCM3 3DG: not on the flood risk listCM3 3DQ: not on the flood risk listCM3 3DR: not on the flood risk listCM3 3DS: not on the flood risk listCM3 3DX: not on the flood risk listCM3 3EH: not on the flood risk listCM3 3EN: not on the flood risk listCM3 3FA: not on the flood risk listCM3 3FB: not on the flood risk listCM3 3FE: not on the flood risk listCM3 3FG: not on the flood risk listCM3 3FN: not on the flood risk listCM3 3FP: not on the flood risk listCM3 3FS: not on the flood risk listCM3 3FX: not on the flood risk listCM3 3FZ: not on the flood risk listCM3 3GD: not on the flood risk listCM3 3GQ: not on the flood risk listCM3 3GY: not on the flood risk listCM3 3GZ: not on the flood risk listCM3 3HH: not on the flood risk listCM3 3HJ: not on the flood risk listCM3 3HN: not on the flood risk listCM3 3HR: not on the flood risk listCM3 3HS: not on the flood risk listCM3 3HT: not on the flood risk listCM3 3HU: not on the flood risk listCM3 3HW: not on the flood risk listCM3 3HY: not on the flood risk listCM3 3JA: not on the flood risk listCM3 3JL: not on the flood risk listCM3 3JQ: not on the flood risk listCM3 3LA: not on the flood risk listCM3 3LB: not on the flood risk listCM3 3LD: not on the flood risk listCM3 3LE: not on the flood risk listCM3 3LF: not on the flood risk listCM3 3LH: not on the flood risk listCM3 3LJ: not on the flood risk listCM3 3LL: not on the flood risk listCM3 3LU: not on the flood risk listCM3 3LX: not on the flood risk listCM3 3LY: not on the flood risk listCM3 3LZ: not on the flood risk listCM3 3NA: not on the flood risk listCM3 3NB: not on the flood risk listCM3 3ND: not on the flood risk listCM3 3NE: not on the flood risk listCM3 3NF: not on the flood risk listCM3 3NG: not on the flood risk listCM3 3NH: not on the flood risk listCM3 3NJ: not on the flood risk listCM3 3NQ: not on the flood risk listCM3 3NY: not on the flood risk listCM3 3NZ: not on the flood risk listCM3 3PF: not on the flood risk listCM3 3PH: not on the flood risk listCM3 3PN: not on the flood risk listCM3 3PP: not on the flood risk listCM3 3PR: not on the flood risk listCM3 3PS: not on the flood risk listCM3 3PW: not on the flood risk listCM3 3PX: not on the flood risk listCM3 3PZ: not on the flood risk listCM3 3QQ: not on the flood risk listCM3 3QS: not on the flood risk listCM3 3QT: not on the flood risk listCM3 3QW: not on the flood risk listCM3 3WL: not on the flood risk listCM3 4AA: not on the flood risk listCM3 4AB: not on the flood risk listCM3 4AE: not on the flood risk listCM3 4AF: not on the flood risk listCM3 4AJ: not on the flood risk listCM3 4AL: not on the flood risk listCM3 4AP: not on the flood risk listCM3 4AQ: not on the flood risk listCM3 4AR: not on the flood risk listCM3 4AU: not on the flood risk listCM3 4AW: not on the flood risk listCM3 4AX: not on the flood risk listCM3 4AY: not on the flood risk listCM3 4AZ: not on the flood risk listCM3 4BA: not on the flood risk listCM3 4BB: not on the flood risk listCM3 4BD: not on the flood risk listCM3 4BH: not on the flood risk listCM3 4BJ: not on the flood risk listCM3 4BL: not on the flood risk listCM3 4BP: not on the flood risk listCM3 4BW: not on the flood risk listCM3 4BX: not on the flood risk listCM3 4BY: not on the flood risk listCM3 4BZ: not on the flood risk listCM3 4DA: not on the flood risk listCM3 4DD: not on the flood risk listCM3 4DE: not on the flood risk listCM3 4DH: not on the flood risk listCM3 4DN: not on the flood risk listCM3 4DP: not on the flood risk listCM3 4DS: not on the flood risk listCM3 4DX: not on the flood risk listCM3 4DZ: not on the flood risk listCM3 4ED: not on the flood risk listCM3 4EE: not on the flood risk listCM3 4EF: not on the flood risk listCM3 4EP: not on the flood risk listCM3 4EQ: not on the flood risk listCM3 4ER: not on the flood risk listCM3 4ET: not on the flood risk listCM3 4EU: not on the flood risk listCM3 4EX: not on the flood risk listCM3 4EY: not on the flood risk listCM3 4EZ: not on the flood risk listCM3 4FA: not on the flood risk listCM3 4FG: not on the flood risk listCM3 4FH: not on the flood risk listCM3 4FJ: not on the flood risk listCM3 4FP: not on the flood risk listCM3 4FQ: not on the flood risk listCM3 4FS: not on the flood risk listCM3 4HA: not on the flood risk listCM3 4HB: not on the flood risk listCM3 4HD: not on the flood risk listCM3 4HE: not on the flood risk listCM3 4HF: not on the flood risk listCM3 4HG: not on the flood risk listCM3 4HH: not on the flood risk listCM3 4HJ: not on the flood risk listCM3 4HL: not on the flood risk listCM3 4HN: not on the flood risk listCM3 4HP: not on the flood risk listCM3 4HQ: not on the flood risk listCM3 4HW: not on the flood risk listCM3 4HX: not on the flood risk listCM3 4HZ: not on the flood risk listCM3 4JG: not on the flood risk listCM3 4JH: not on the flood risk listCM3 4JL: not on the flood risk listCM3 4JN: not on the flood risk listCM3 4JS: not on the flood risk listCM3 4LA: not on the flood risk listCM3 4LE: not on the flood risk listCM3 4LH: not on the flood risk listCM3 4LJ: not on the flood risk listCM3 4LL: not on the flood risk listCM3 4LN: not on the flood risk listCM3 4LP: not on the flood risk listCM3 4LR: not on the flood risk listCM3 4LW: not on the flood risk listCM3 4LX: not on the flood risk listCM3 4LY: not on the flood risk listCM3 4LZ: not on the flood risk listCM3 4NA: not on the flood risk listCM3 4NL: not on the flood risk listCM3 4NP: not on the flood risk listCM3 4NQ: not on the flood risk listCM3 4NS: not on the flood risk listCM3 4NT: not on the flood risk listCM3 4NW: not on the flood risk listCM3 4NX: not on the flood risk listCM3 4NY: not on the flood risk listCM3 4NZ: not on the flood risk listCM3 4PB: not on the flood risk listCM3 4PE: not on the flood risk listCM3 4PF: not on the flood risk listCM3 4PG: not on the flood risk listCM3 4PL: not on the flood risk listCM3 4PQ: not on the flood risk listCM3 4QB: not on the flood risk listCM3 4QN: not on the flood risk listCM3 4QP: not on the flood risk listCM3 4QS: not on the flood risk listCM3 4QT: not on the flood risk listCM3 4QX: not on the flood risk listCM3 4RA: not on the flood risk listCM3 4RJ: not on the flood risk listCM3 4RS: not on the flood risk listCM3 4RT: not on the flood risk listCM3 4RU: not on the flood risk listCM3 4RY: not on the flood risk listCM3 4RZ: not on the flood risk listCM3 4SB: not on the flood risk listCM3 4SD: not on the flood risk listCM3 4SF: not on the flood risk listCM3 4SG: not on the flood risk listCM3 4SH: not on the flood risk listCM3 4SN: not on the flood risk listCM3 4SQ: not on the flood risk listCM3 4ST: not on the flood risk listCM3 4SU: not on the flood risk listCM3 4SX: not on the flood risk listCM3 4SY: not on the flood risk listCM3 4SZ: not on the flood risk listCM3 4TA: not on the flood risk listCM3 4TD: not on the flood risk listCM3 4TH: not on the flood risk listCM3 4TL: not on the flood risk listCM3 4TQ: not on the flood risk listCM3 4TW: not on the flood risk listCM3 4UJ: not on the flood risk listCM3 4XB: not on the flood risk listCM3 4XG: not on the flood risk listCM3 5EU: not on the flood risk listCM3 5FA: not on the flood risk listCM3 5FL: not on the flood risk listCM3 5FP: not on the flood risk listCM3 5FY: not on the flood risk listCM3 5GA: not on the flood risk listCM3 5GE: not on the flood risk listCM3 5JB: not on the flood risk listCM3 5JF: not on the flood risk listCM3 5JQ: not on the flood risk listCM3 5LL: not on the flood risk listCM3 5LN: not on the flood risk listCM3 5LP: not on the flood risk listCM3 5LQ: not on the flood risk listCM3 5LU: not on the flood risk listCM3 5NG: not on the flood risk listCM3 5NL: not on the flood risk listCM3 5NS: not on the flood risk listCM3 5NU: not on the flood risk listCM3 5PD: not on the flood risk listCM3 5PF: not on the flood risk listCM3 5PG: not on the flood risk listCM3 5PN: not on the flood risk listCM3 5PT: not on the flood risk listCM3 5QB: not on the flood risk listCM3 5QJ: not on the flood risk listCM3 5QN: not on the flood risk listCM3 5QS: not on the flood risk listCM3 5SA: not on the flood risk listCM3 5SB: not on the flood risk listCM3 5TR: not on the flood risk listCM3 5TU: not on the flood risk listCM3 5UF: not on the flood risk listCM3 5UX: not on the flood risk listCM3 5WS: not on the flood risk listCM3 5WU: not on the flood risk listCM3 5XY: not on the flood risk listCM3 5YS: not on the flood risk listCM3 5YU: not on the flood risk listCM3 5ZQ: not on the flood risk listCM3 6AA: not on the flood risk listCM3 6AB: not on the flood risk listCM3 6AD: not on the flood risk listCM3 6AE: not on the flood risk listCM3 6AF: not on the flood risk listCM3 6AN: not on the flood risk listCM3 6AX: not on the flood risk listCM3 6BE: not on the flood risk listCM3 6BG: not on the flood risk listCM3 6BH: not on the flood risk listCM3 6BJ: not on the flood risk listCM3 6BL: not on the flood risk listCM3 6BP: not on the flood risk listCM3 6BQ: not on the flood risk listCM3 6BS: not on the flood risk listCM3 6BT: not on the flood risk listCM3 6BY: not on the flood risk listCM3 6BZ: not on the flood risk listCM3 6DA: not on the flood risk listCM3 6DB: not on the flood risk listCM3 6DD: not on the flood risk listCM3 6DG: not on the flood risk listCM3 6DJ: not on the flood risk listCM3 6DP: not on the flood risk listCM3 6DR: not on the flood risk listCM3 6DS: not on the flood risk listCM3 6DT: not on the flood risk listCM3 6DU: not on the flood risk listCM3 6DY: not on the flood risk listCM3 6DZ: not on the flood risk listCM3 6EA: not on the flood risk listCM3 6EB: not on the flood risk listCM3 6ED: not on the flood risk listCM3 6EE: not on the flood risk listCM3 6EF: not on the flood risk listCM3 6EN: not on the flood risk listCM3 6ET: not on the flood risk listCM3 6EU: not on the flood risk listCM3 6EW: not on the flood risk listCM3 6EX: not on the flood risk listCM3 6EY: not on the flood risk listCM3 6EZ: not on the flood risk listCM3 6FA: not on the flood risk listCM3 6FH: not on the flood risk listCM3 6FL: not on the flood risk listCM3 6FQ: not on the flood risk listCM3 6FY: not on the flood risk listCM3 6GQ: not on the flood risk listCM3 6GS: not on the flood risk listCM3 6GW: not on the flood risk listCM3 6HA: not on the flood risk listCM3 6HB: not on the flood risk listCM3 6HD: not on the flood risk listCM3 6HE: not on the flood risk listCM3 6HF: not on the flood risk listCM3 6HG: not on the flood risk listCM3 6HL: not on the flood risk listCM3 6HN: not on the flood risk listCM3 6HT: not on the flood risk listCM3 6HU: not on the flood risk listCM3 6HY: not on the flood risk listCM3 6JB: not on the flood risk listCM3 6JF: not on the flood risk listCM3 6JG: not on the flood risk listCM3 6JX: not on the flood risk listCM3 6JZ: not on the flood risk listCM3 6LA: not on the flood risk listCM3 6LB: not on the flood risk listCM3 6LD: not on the flood risk listCM3 6LL: not on the flood risk listCM3 6LQ: not on the flood risk listCM3 6ND: not on the flood risk listCM3 6NE: not on the flood risk listCM3 6NN: not on the flood risk listCM3 6NP: not on the flood risk listCM3 6NS: not on the flood risk listCM3 6NW: not on the flood risk listCM3 6NZ: not on the flood risk listCM3 6PA: not on the flood risk listCM3 6PE: not on the flood risk listCM3 6PL: not on the flood risk listCM3 6PP: not on the flood risk listCM3 6PR: not on the flood risk listCM3 6PS: not on the flood risk listCM3 6PT: not on the flood risk listCM3 6PU: not on the flood risk listCM3 6PW: not on the flood risk listCM3 6PX: not on the flood risk listCM3 6PZ: not on the flood risk listCM3 6QJ: not on the flood risk listCM3 6QN: not on the flood risk listCM3 6QP: not on the flood risk listCM3 6QR: not on the flood risk listCM3 6QS: not on the flood risk listCM3 6QT: not on the flood risk listCM3 6QW: not on the flood risk listCM3 6QY: not on the flood risk listCM3 6QZ: not on the flood risk listCM3 6RA: not on the flood risk listCM3 6RB: not on the flood risk listCM3 6RD: not on the flood risk listCM3 6RE: not on the flood risk listCM3 6RF: not on the flood risk listCM3 6RG: not on the flood risk listCM3 6RL: not on the flood risk listCM3 6RN: not on the flood risk listCM3 6RP: not on the flood risk listCM3 6RR: not on the flood risk listCM3 6RS: not on the flood risk listCM3 6RT: not on the flood risk listCM3 6RU: not on the flood risk listCM3 6RW: not on the flood risk listCM3 6SA: not on the flood risk listCM3 6SB: not on the flood risk listCM3 6SD: not on the flood risk listCM3 6SG: not on the flood risk listCM3 6SH: not on the flood risk listCM3 6SJ: not on the flood risk listCM3 6SL: not on the flood risk listCM3 6TA: not on the flood risk listCM3 6TD: not on the flood risk listCM3 6TE: not on the flood risk listCM3 6UT: not on the flood risk listCM3 6YH: not on the flood risk listCM3 6YP: not on the flood risk listCM3 7AF: not on the flood risk listCM3 7AG: not on the flood risk listCM3 7AU: not on the flood risk listCM3 7BL: not on the flood risk listCM3 8AA: not on the flood risk listCM3 8AB: not on the flood risk listCM3 8AG: not on the flood risk listCM3 8AH: not on the flood risk listCM3 8AJ: not on the flood risk listCM3 8AL: not on the flood risk listCM3 8AP: not on the flood risk listCM3 8AR: not on the flood risk listCM3 8AS: not on the flood risk listCM3 8AU: not on the flood risk listCM3 8AW: not on the flood risk listCM3 8AX: not on the flood risk listCM3 8BD: not on the flood risk listCM3 8BE: not on the flood risk listCM3 8BG: not on the flood risk listCM3 8BH: not on the flood risk listCM3 8BJ: not on the flood risk listCM3 8BL: not on the flood risk listCM3 8BP: not on the flood risk listCM3 8BQ: not on the flood risk listCM3 8BT: not on the flood risk listCM3 8BW: not on the flood risk listCM3 8BY: not on the flood risk listCM3 8DA: not on the flood risk listCM3 8DB: not on the flood risk listCM3 8DD: not on the flood risk listCM3 8DE: not on the flood risk listCM3 8DF: not on the flood risk listCM3 8DG: not on the flood risk listCM3 8DH: not on the flood risk listCM3 8DL: not on the flood risk listCM3 8DN: not on the flood risk listCM3 8DP: not on the flood risk listCM3 8DQ: not on the flood risk listCM3 8DS: not on the flood risk listCM3 8DU: not on the flood risk listCM3 8DW: not on the flood risk listCM3 8EA: not on the flood risk listCM3 8EB: not on the flood risk listCM3 8ED: not on the flood risk listCM3 8EF: not on the flood risk listCM3 8EG: not on the flood risk listCM3 8EH: not on the flood risk listCM3 8EN: not on the flood risk listCM3 8EP: not on the flood risk listCM3 8ER: not on the flood risk listCM3 8ES: not on the flood risk listCM3 8ET: not on the flood risk listCM3 8EU: not on the flood risk listCM3 8EW: not on the flood risk listCM3 8FG: not on the flood risk listCM3 8FH: not on the flood risk listCM3 8FJ: not on the flood risk listCM3 8FQ: not on the flood risk listCM3 8GE: not on the flood risk listCM3 8GX: not on the flood risk listCM3 8HA: not on the flood risk listCM3 8HD: not on the flood risk listCM3 8HE: not on the flood risk listCM3 8HH: not on the flood risk listCM3 8HJ: not on the flood risk listCM3 8HL: not on the flood risk listCM3 8HP: not on the flood risk listCM3 8HQ: not on the flood risk listCM3 8HT: not on the flood risk listCM3 8HU: not on the flood risk listCM3 8HX: not on the flood risk listCM3 8RA: not on the flood risk listCM3 8RB: not on the flood risk listCM3 8RE: not on the flood risk listCM3 8RF: not on the flood risk listCM3 8RG: not on the flood risk listCM3 8RJ: not on the flood risk listCM3 8RN: not on the flood risk listCM3 8RP: not on the flood risk listCM3 8RS: not on the flood risk listCM3 8RT: not on the flood risk listCM3 8RU: not on the flood risk listCM3 8RX: not on the flood risk listCM3 8UT: not on the flood risk listCM3 1JZ: very low flood risk onlyCM3 5BF: very low flood risk onlyCM3 5DD: very low flood risk onlyCM3 5FB: very low flood risk onlyCM3 5FD: very low flood risk onlyCM3 5YA: very low flood risk onlyCM3 5GU: very low flood risk onlyCM3 5YB: very low flood risk onlyCM3 5JE: very low flood risk onlyCM3 5JN: very low flood risk onlyCM3 5LX: very low flood risk onlyCM3 5SP: very low flood risk onlyCM3 5WA: very low flood risk onlyCM3 5YE: very low flood risk onlyCM3 6LE: very low flood risk onlyCM3 1LL: low flood risk at worstCM3 2NQ: low flood risk at worstCM3 2NP: low flood risk at worstCM3 2PW: low flood risk at worstCM3 3PB: low flood risk at worstCM3 4BE: low flood risk at worstCM3 4LS: low flood risk at worstCM3 4ND: low flood risk at worstCM3 4XH: low flood risk at worstCM3 5QY: low flood risk at worstCM3 5GH: low flood risk at worstCM3 5GL: low flood risk at worstCM3 5QZ: low flood risk at worstCM3 5ZW: low flood risk at worstCM3 6AG: low flood risk at worstCM3 6GJ: low flood risk at worstCM3 6TY: low flood risk at worstCM3 6DH: low flood risk at worstCM3 6EL: low flood risk at worstCM3 6LJ: low flood risk at worstCM3 6LW: low flood risk at worstCM3 6RJ: low flood risk at worstCM3 6TT: low flood risk at worstCM3 6UD: low flood risk at worstCM3 7AZ: low flood risk at worstCM3 8DY: low flood risk at worstCM3 8DZ: low flood risk at worstCM3 1JP: medium flood risk at worstCM3 1ND: medium flood risk at worstCM3 2PQ: medium flood risk at worstCM3 3LN: medium flood risk at worstCM3 3NT: medium flood risk at worstCM3 4ES: medium flood risk at worstCM3 6AW: medium flood risk at worstCM3 6EJ: medium flood risk at worstCM3 6BN: medium flood risk at worstCM3 6FJ: medium flood risk at worstCM3 6LF: medium flood risk at worstCM3 6NA: medium flood risk at worstCM3 7AW: medium flood risk at worstCM3 1AQ: high flood riskCM3 1AH: high flood riskCM3 1AS: high flood riskCM3 1BP: high flood riskCM3 1BG: high flood riskCM3 1BT: high flood riskCM3 1FH: high flood riskCM3 2BA: high flood riskCM3 2EU: high flood riskCM3 3AU: high flood riskCM3 3AY: high flood riskCM3 3EW: high flood riskCM3 3FY: high flood riskCM3 3NS: high flood riskCM3 3NU: high flood riskCM3 3PJ: high flood riskCM3 4BQ: high flood riskCM3 4BS: high flood riskCM3 4BT: high flood riskCM3 4FL: high flood riskCM3 5XH: high flood riskCM3 5WP: high flood riskCM3 5QU: high flood riskCM3 6AL: high flood riskCM3 6SS: high flood riskCM3 6BD: high flood riskCM3 6DQ: high flood riskCM3 6EG: high flood riskCM3 6EQ: high flood riskCM3 6LU: high flood riskCM3 6GU: high flood riskCM3 6HP: high flood riskCM3 6HQ: high flood riskCM3 6JP: high flood riskCM3 6LG: high flood riskCM3 6LS: high flood riskCM3 6LP: high flood riskCM3 6LR: high flood riskCM3 6NB: high flood riskCM3 6NF: high flood riskCM3 6NH: high flood riskCM3 6NJ: high flood riskCM3 6NL: high flood riskCM3 6SF: high flood riskCM3 6SQ: high flood riskCM3 7AD: high flood riskCM3 7AL: high flood riskCM3 7BG: high flood riskCM3 8EE: high flood risk South Woodham FerrersChelmsfordWithamMaldonTiptreeGreat Notley 6 postcodes at high or medium risk, outlined: this goes to CM3 6SS, the one with most homes and businesses at high risk6 postcodes at high or medium risk Map of every postcode in CM3, by flood risk Of the 1,588 postcodes in CM3 that ONS places, 49 have a home or business at high risk, 19 are at medium risk at worst, 37 are at low risk at worst, 49 are at very low risk only and 1,434 are not on the Environment Agency's at-risk list. One group of postcodes at high or medium risk is outlined: 6 postcodes at high or medium risk. Places named: South Woodham Ferrers, Chelmsford, Witham, Maldon. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 5 km. A1060 South Woodham FerrersChelmsfordWithamMaldon
  • A home or business at high risk: 49
  • At medium risk at worst: 19
  • At low risk at worst: 37
  • At very low risk only: 49
  • Not on the at-risk list: 1,434
  • Outline: where 5 or more postcodes at high or medium risk lie together

Of the 1,588 postcodes in CM3 that ONS places, 49 have a home or business at high risk, 19 are at medium risk at worst, 37 are at low risk at worst, 49 are at very low risk only and 1,434 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 200 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 51.7219, longitude 0.5844. 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

49 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.

CM3 6JP29 at high riskCM3 5WP25 at high riskCM3 6NF17 at high riskCM3 3PJ15 at high riskCM3 6LS14 at high riskCM3 6NB12 at high riskCM3 6SS12 at high riskCM3 6LG11 at high riskCM3 6LU11 at high riskCM3 6LR7 at high riskCM3 6BD7 at high riskCM3 6HP7 at high risk

Where the postcodes at high or medium risk lie together

  • 6 postcodes at high or medium risk, outlined on the map. CM3 6SS, is the one with most homes and businesses at high risk.

What broadband can you get in CM3?

Ofcom reports on 1,560 of the 1,588 postcodes in CM3. At 955 of them every home and business can get gigabit broadband, and at 22 some cannot get decent broadband (10 Mbit/s).

Postcodes where every home can get gigabit955 of 1,560
Postcodes where every home can get superfast1,345 of 1,560
Postcodes where some cannot get decent broadband22 of 1,560

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 CM3 at risk of flooding?

154 of the 1,588 postcodes in CM3 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 347 homes and businesses in an area at high or medium risk.

Homes and businesses in an area at risk, at 154 of 1,588 postcodes High: 251Medium: 96Low: 431Very low: 787

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 CM3?

Homes in CM3 sold for a typical £442,000 in the 12 months to August 2026, across 655 sales, down 3.9% on the 12 months before, HM Land Registry's figures show.

£442,000 typical price, the 12 months to August 2026
12 months to August 2025
£460,000
12 months to August 2026
£442,000

▼ down 3.9% on the 12 months before

Detached£560,000 333 sales
Semi-detached£393,000 165 sales
Terraced£325,000 105 sales
Flat or maisonette£198,750 52 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 CM3

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

CM3 1215 postcodesCM3 2234 postcodesCM3 3207 postcodesCM3 4244 postcodesCM3 5252 postcodesCM3 6281 postcodesCM3 725 postcodesCM3 8126 postcodesCM3 94 postcodes
UK postcode format explained

Places in CM3

Towns and villages with postcodes in CM3, and how many each has here.

South Woodham Ferrers postcodes,283Danbury postcodes,152Hatfield Peverel postcodes,130Boreham postcodes,89Mayland postcodes,56Chelmsford postcodes,33Broomfield postcodes,10

Who covers CM3

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

  • Maldon923
  • North West Essex396
  • Witham246
  • Braintree19
  • Chelmsford4

Police force areas

  • Essex1,588

Next to CM3

CM2 postcode district CM4 postcode district All CM districts South Woodham Ferrers postcodes

"Next to" is by number: the districts before and after CM3 in the CM area.

Check a postcode

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