NR20 postcode district: Dereham and around, Norfolk

NR20 is a postcode district in Norfolk, with 868 postcodes in use in 3 sectors. It has postcodes in Dereham, Mattishall and Swanton Morley. It is split between 4 councils: Breckland (747 postcodes), Broadland (62), North Norfolk (48) and 1 other.

Postcodes in use
868
Sectors
3
Councils
4 councils
Places
3 places

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

Every postcode in NR20, by flood risk

Map of every postcode in NR20, by flood risk Of the 868 postcodes in NR20 that ONS places, 20 have a home or business at high risk, 8 are at medium risk at worst, 23 are at low risk at worst and 817 are not on the Environment Agency's at-risk list. Places named: Dereham, Mattishall, Reepham, Swanton Morley. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2.5 km. A47A1075A1065 NR20 3AA: not on the flood risk listNR20 3AB: not on the flood risk listNR20 3AD: not on the flood risk listNR20 3AE: not on the flood risk listNR20 3AF: not on the flood risk listNR20 3AH: not on the flood risk listNR20 3AL: not on the flood risk listNR20 3AP: not on the flood risk listNR20 3AR: not on the flood risk listNR20 3AT: not on the flood risk listNR20 3AU: not on the flood risk listNR20 3AX: not on the flood risk listNR20 3AY: not on the flood risk listNR20 3AZ: not on the flood risk listNR20 3BB: not on the flood risk listNR20 3BD: not on the flood risk listNR20 3BE: not on the flood risk listNR20 3BF: not on the flood risk listNR20 3BG: not on the flood risk listNR20 3BJ: not on the flood risk listNR20 3BP: not on the flood risk listNR20 3BS: not on the flood risk listNR20 3BT: not on the flood risk listNR20 3BU: not on the flood risk listNR20 3BW: not on the flood risk listNR20 3BX: not on the flood risk listNR20 3BY: not on the flood risk listNR20 3BZ: not on the flood risk listNR20 3DA: not on the flood risk listNR20 3DB: not on the flood risk listNR20 3DD: not on the flood risk listNR20 3DF: not on the flood risk listNR20 3DG: not on the flood risk listNR20 3DH: not on the flood risk listNR20 3DJ: not on the flood risk listNR20 3DL: not on the flood risk listNR20 3DN: not on the flood risk listNR20 3DP: not on the flood risk listNR20 3DQ: not on the flood risk listNR20 3DR: not on the flood risk listNR20 3DS: not on the flood risk listNR20 3DT: not on the flood risk listNR20 3DU: not on the flood risk listNR20 3DW: not on the flood risk listNR20 3DX: not on the flood risk listNR20 3DY: not on the flood risk listNR20 3DZ: not on the flood risk listNR20 3EA: not on the flood risk listNR20 3EB: not on the flood risk listNR20 3ED: not on the flood risk listNR20 3EE: not on the flood risk listNR20 3EF: not on the flood risk listNR20 3EP: not on the flood risk listNR20 3ET: not on the flood risk listNR20 3EU: not on the flood risk listNR20 3EX: not on the flood risk listNR20 3EY: not on the flood risk listNR20 3EZ: not on the flood risk listNR20 3FA: not on the flood risk listNR20 3FB: not on the flood risk listNR20 3FD: not on the flood risk listNR20 3FG: not on the flood risk listNR20 3FH: not on the flood risk listNR20 3FJ: not on the flood risk listNR20 3FL: not on the flood risk listNR20 3FN: not on the flood risk listNR20 3FP: not on the flood risk listNR20 3FU: not on the flood risk listNR20 3FX: not on the flood risk listNR20 3GA: not on the flood risk listNR20 3GG: not on the flood risk listNR20 3GJ: not on the flood risk listNR20 3GR: not on the flood risk listNR20 3GS: not on the flood risk listNR20 3GU: not on the flood risk listNR20 3GW: not on the flood risk listNR20 3GX: not on the flood risk listNR20 3GZ: not on the flood risk listNR20 3HA: not on the flood risk listNR20 3HB: not on the flood risk listNR20 3HD: not on the flood risk listNR20 3HF: not on the flood risk listNR20 3HG: not on the flood risk listNR20 3HN: not on the flood risk listNR20 3HP: not on the flood risk listNR20 3HQ: not on the flood risk listNR20 3HU: not on the flood risk listNR20 3HY: not on the flood risk listNR20 3HZ: not on the flood risk listNR20 3JA: not on the flood risk listNR20 3JB: not on the flood risk listNR20 3JD: not on the flood risk listNR20 3JE: not on the flood risk listNR20 3JF: not on the flood risk listNR20 3JG: not on the flood risk listNR20 3JH: not on the flood risk listNR20 3JJ: not on the flood risk listNR20 3JL: not on the flood risk listNR20 3JN: not on the flood risk listNR20 3JP: not on the flood risk listNR20 3JQ: not on the flood risk listNR20 3JR: not on the flood risk listNR20 3JS: not on the flood risk listNR20 3JT: not on the flood risk listNR20 3JX: not on the flood risk listNR20 3JY: not on the flood risk listNR20 3JZ: not on the flood risk listNR20 3LA: not on the flood risk listNR20 3LD: not on the flood risk listNR20 3LE: not on the flood risk listNR20 3LF: not on the flood risk listNR20 3LG: not on the flood risk listNR20 3LH: not on the flood risk listNR20 3LJ: not on the flood risk listNR20 3LL: not on the flood risk listNR20 3LN: not on the flood risk listNR20 3LP: not on the flood risk listNR20 3LQ: not on the flood risk listNR20 3LR: not on the flood risk listNR20 3LS: not on the flood risk listNR20 3LT: not on the flood risk listNR20 3LU: not on the flood risk listNR20 3LW: not on the flood risk listNR20 3LY: not on the flood risk listNR20 3NA: not on the flood risk listNR20 3NB: not on the flood risk listNR20 3ND: not on the flood risk listNR20 3NE: not on the flood risk listNR20 3NF: not on the flood risk listNR20 3NG: not on the flood risk listNR20 3NH: not on the flood risk listNR20 3NJ: not on the flood risk listNR20 3NL: not on the flood risk listNR20 3NP: not on the flood risk listNR20 3NT: not on the flood risk listNR20 3NU: not on the flood risk listNR20 3PA: not on the flood risk listNR20 3PB: not on the flood risk listNR20 3PD: not on the flood risk listNR20 3PE: not on the flood risk listNR20 3PJ: not on the flood risk listNR20 3PL: not on the flood risk listNR20 3PN: not on the flood risk listNR20 3PP: not on the flood risk listNR20 3PQ: not on the flood risk listNR20 3PS: not on the flood risk listNR20 3PU: not on the flood risk listNR20 3PX: not on the flood risk listNR20 3PZ: not on the flood risk listNR20 3QB: not on the flood risk listNR20 3QG: not on the flood risk listNR20 3QH: not on the flood risk listNR20 3QJ: not on the flood risk listNR20 3QP: not on the flood risk listNR20 3QR: not on the flood risk listNR20 3QS: not on the flood risk listNR20 3QU: not on the flood risk listNR20 3QW: not on the flood risk listNR20 3QX: not on the flood risk listNR20 3QY: not on the flood risk listNR20 3QZ: not on the flood risk listNR20 3RA: not on the flood risk listNR20 3RB: not on the flood risk listNR20 3RJ: not on the flood risk listNR20 3RL: not on the flood risk listNR20 3RN: not on the flood risk listNR20 3RR: not on the flood risk listNR20 3RS: not on the flood risk listNR20 3RW: not on the flood risk listNR20 3SB: not on the flood risk listNR20 3SF: not on the flood risk listNR20 3SG: not on the flood risk listNR20 3SJ: not on the flood risk listNR20 3SL: not on the flood risk listNR20 3SQ: not on the flood risk listNR20 3SR: not on the flood risk listNR20 3SS: not on the flood risk listNR20 3TA: not on the flood risk listNR20 3TB: not on the flood risk listNR20 3TD: not on the flood risk listNR20 3TE: not on the flood risk listNR20 3TF: not on the flood risk listNR20 3TG: not on the flood risk listNR20 3TH: not on the flood risk listNR20 3TJ: not on the flood risk listNR20 3TL: not on the flood risk listNR20 3TS: not on the flood risk listNR20 3TZ: not on the flood risk listNR20 3UA: not on the flood risk listNR20 3UD: not on the flood risk listNR20 3UF: not on the flood risk listNR20 3UH: not on the flood risk listNR20 3UN: not on the flood risk listNR20 3US: not on the flood risk listNR20 3UU: not on the flood risk listNR20 3UW: not on the flood risk listNR20 3UZ: not on the flood risk listNR20 3WA: not on the flood risk listNR20 3WD: not on the flood risk listNR20 3YN: not on the flood risk listNR20 4AA: not on the flood risk listNR20 4AB: not on the flood risk listNR20 4AD: not on the flood risk listNR20 4AF: not on the flood risk listNR20 4AH: not on the flood risk listNR20 4AJ: not on the flood risk listNR20 4AN: not on the flood risk listNR20 4AP: not on the flood risk listNR20 4AQ: not on the flood risk listNR20 4AR: not on the flood risk listNR20 4AS: not on the flood risk listNR20 4AU: not on the flood risk listNR20 4AX: not on the flood risk listNR20 4AZ: not on the flood risk listNR20 4BA: not on the flood risk listNR20 4BD: not on the flood risk listNR20 4BE: not on the flood risk listNR20 4BF: not on the flood risk listNR20 4BG: not on the flood risk listNR20 4BH: not on the flood risk listNR20 4BJ: not on the flood risk listNR20 4BP: not on the flood risk listNR20 4BQ: not on the flood risk listNR20 4BS: not on the flood risk listNR20 4BT: not on the flood risk listNR20 4BU: not on the flood risk listNR20 4BW: not on the flood risk listNR20 4BX: not on the flood risk listNR20 4BY: not on the flood risk listNR20 4DA: not on the flood risk listNR20 4DB: not on the flood risk listNR20 4DE: not on the flood risk listNR20 4DG: not on the flood risk listNR20 4DH: not on the flood risk listNR20 4DJ: not on the flood risk listNR20 4DL: not on the flood risk listNR20 4DP: not on the flood risk listNR20 4DQ: not on the flood risk listNR20 4DR: not on the flood risk listNR20 4DS: not on the flood risk listNR20 4DU: not on the flood risk listNR20 4DW: not on the flood risk listNR20 4DY: not on the flood risk listNR20 4EA: not on the flood risk listNR20 4EB: not on the flood risk listNR20 4ED: not on the flood risk listNR20 4EF: not on the flood risk listNR20 4EG: not on the flood risk listNR20 4EL: not on the flood risk listNR20 4EN: not on the flood risk listNR20 4EP: not on the flood risk listNR20 4ER: not on the flood risk listNR20 4ES: not on the flood risk listNR20 4ET: not on the flood risk listNR20 4EU: not on the flood risk listNR20 4EW: not on the flood risk listNR20 4EX: not on the flood risk listNR20 4EY: not on the flood risk listNR20 4EZ: not on the flood risk listNR20 4FA: not on the flood risk listNR20 4FD: not on the flood risk listNR20 4FE: not on the flood risk listNR20 4FF: not on the flood risk listNR20 4FG: not on the flood risk listNR20 4FH: not on the flood risk listNR20 4FN: not on the flood risk listNR20 4FP: not on the flood risk listNR20 4FQ: not on the flood risk listNR20 4FR: not on the flood risk listNR20 4FS: not on the flood risk listNR20 4FW: not on the flood risk listNR20 4FX: not on the flood risk listNR20 4FY: not on the flood risk listNR20 4FZ: not on the flood risk listNR20 4GB: not on the flood risk listNR20 4GD: not on the flood risk listNR20 4GE: not on the flood risk listNR20 4GG: not on the flood risk listNR20 4GH: not on the flood risk listNR20 4GR: not on the flood risk listNR20 4HA: not on the flood risk listNR20 4HB: not on the flood risk listNR20 4HD: not on the flood risk listNR20 4HE: not on the flood risk listNR20 4HF: not on the flood risk listNR20 4HG: not on the flood risk listNR20 4HH: not on the flood risk listNR20 4HJ: not on the flood risk listNR20 4HQ: not on the flood risk listNR20 4HU: not on the flood risk listNR20 4HW: not on the flood risk listNR20 4HY: not on the flood risk listNR20 4HZ: not on the flood risk listNR20 4JA: not on the flood risk listNR20 4JD: not on the flood risk listNR20 4JE: not on the flood risk listNR20 4JF: not on the flood risk listNR20 4JG: not on the flood risk listNR20 4JH: not on the flood risk listNR20 4JJ: not on the flood risk listNR20 4JL: not on the flood risk listNR20 4JP: not on the flood risk listNR20 4JQ: not on the flood risk listNR20 4JS: not on the flood risk listNR20 4JT: not on the flood risk listNR20 4JU: not on the flood risk listNR20 4JW: not on the flood risk listNR20 4JX: not on the flood risk listNR20 4JZ: not on the flood risk listNR20 4LA: not on the flood risk listNR20 4LB: not on the flood risk listNR20 4LD: not on the flood risk listNR20 4LH: not on the flood risk listNR20 4LN: not on the flood risk listNR20 4LP: not on the flood risk listNR20 4LQ: not on the flood risk listNR20 4LS: not on the flood risk listNR20 4LT: not on the flood risk listNR20 4LU: not on the flood risk listNR20 4LX: not on the flood risk listNR20 4NJ: not on the flood risk listNR20 4NL: not on the flood risk listNR20 4NP: not on the flood risk listNR20 4NR: not on the flood risk listNR20 4NS: not on the flood risk listNR20 4NT: not on the flood risk listNR20 4NU: not on the flood risk listNR20 4NX: not on the flood risk listNR20 4NY: not on the flood risk listNR20 4NZ: not on the flood risk listNR20 4PD: not on the flood risk listNR20 4PE: not on the flood risk listNR20 4PF: not on the flood risk listNR20 4PP: not on the flood risk listNR20 4PQ: not on the flood risk listNR20 4PR: not on the flood risk listNR20 4PS: not on the flood risk listNR20 4PT: not on the flood risk listNR20 4PU: not on the flood risk listNR20 4PX: not on the flood risk listNR20 4PY: not on the flood risk listNR20 4PZ: not on the flood risk listNR20 4QB: not on the flood risk listNR20 4QD: not on the flood risk listNR20 4QE: not on the flood risk listNR20 4QF: not on the flood risk listNR20 4QG: not on the flood risk listNR20 4QL: not on the flood risk listNR20 4QN: not on the flood risk listNR20 4QP: not on the flood risk listNR20 4QQ: not on the flood risk listNR20 4QR: not on the flood risk listNR20 4QS: not on the flood risk listNR20 4QT: not on the flood risk listNR20 4QU: not on the flood risk listNR20 4QX: not on the flood risk listNR20 4QY: not on the flood risk listNR20 4QZ: not on the flood risk listNR20 4RA: not on the flood risk listNR20 4RB: not on the flood risk listNR20 4RD: not on the flood risk listNR20 4RE: not on the flood risk listNR20 4RG: not on the flood risk listNR20 4RH: not on the flood risk listNR20 4RJ: not on the flood risk listNR20 4RL: not on the flood risk listNR20 4RP: not on the flood risk listNR20 4RR: not on the flood risk listNR20 4RS: not on the flood risk listNR20 4RT: not on the flood risk listNR20 4RU: not on the flood risk listNR20 4RZ: not on the flood risk listNR20 4SA: not on the flood risk listNR20 4SB: not on the flood risk listNR20 4SD: not on the flood risk listNR20 4SG: not on the flood risk listNR20 4SJ: not on the flood risk listNR20 4SL: not on the flood risk listNR20 4SS: not on the flood risk listNR20 4SX: not on the flood risk listNR20 4SZ: not on the flood risk listNR20 4TD: not on the flood risk listNR20 4TG: not on the flood risk listNR20 4TP: not on the flood risk listNR20 4TQ: not on the flood risk listNR20 4TX: not on the flood risk listNR20 4UB: not on the flood risk listNR20 4UD: not on the flood risk listNR20 4UW: not on the flood risk listNR20 4UY: not on the flood risk listNR20 4WF: not on the flood risk listNR20 5AA: not on the flood risk listNR20 5AB: not on the flood risk listNR20 5AD: not on the flood risk listNR20 5AE: not on the flood risk listNR20 5AH: not on the flood risk listNR20 5AJ: not on the flood risk listNR20 5AL: not on the flood risk listNR20 5AP: not on the flood risk listNR20 5AQ: not on the flood risk listNR20 5AR: not on the flood risk listNR20 5AS: not on the flood risk listNR20 5AT: not on the flood risk listNR20 5AU: not on the flood risk listNR20 5AW: not on the flood risk listNR20 5AX: not on the flood risk listNR20 5AY: not on the flood risk listNR20 5AZ: not on the flood risk listNR20 5BA: not on the flood risk listNR20 5BB: not on the flood risk listNR20 5BD: not on the flood risk listNR20 5BE: not on the flood risk listNR20 5BF: not on the flood risk listNR20 5BG: not on the flood risk listNR20 5BH: not on the flood risk listNR20 5BJ: not on the flood risk listNR20 5BL: not on the flood risk listNR20 5BN: not on the flood risk listNR20 5BP: not on the flood risk listNR20 5BS: not on the flood risk listNR20 5BW: not on the flood risk listNR20 5BY: not on the flood risk listNR20 5BZ: not on the flood risk listNR20 5DA: not on the flood risk listNR20 5DB: not on the flood risk listNR20 5DD: not on the flood risk listNR20 5DE: not on the flood risk listNR20 5DF: not on the flood risk listNR20 5DG: not on the flood risk listNR20 5DH: not on the flood risk listNR20 5DJ: not on the flood risk listNR20 5DL: not on the flood risk listNR20 5DN: not on the flood risk listNR20 5DP: not on the flood risk listNR20 5DQ: not on the flood risk listNR20 5DR: not on the flood risk listNR20 5DS: not on the flood risk listNR20 5DT: not on the flood risk listNR20 5DU: not on the flood risk listNR20 5DW: not on the flood risk listNR20 5DX: not on the flood risk listNR20 5DY: not on the flood risk listNR20 5DZ: not on the flood risk listNR20 5EA: not on the flood risk listNR20 5EB: not on the flood risk listNR20 5ED: not on the flood risk listNR20 5EE: not on the flood risk listNR20 5EF: not on the flood risk listNR20 5EG: not on the flood risk listNR20 5EH: not on the flood risk listNR20 5EJ: not on the flood risk listNR20 5EL: not on the flood risk listNR20 5EN: not on the flood risk listNR20 5EP: not on the flood risk listNR20 5ER: not on the flood risk listNR20 5ES: not on the flood risk listNR20 5ET: not on the flood risk listNR20 5EU: not on the flood risk listNR20 5EX: not on the flood risk listNR20 5EY: not on the flood risk listNR20 5EZ: not on the flood risk listNR20 5FA: not on the flood risk listNR20 5FB: not on the flood risk listNR20 5FD: not on the flood risk listNR20 5FE: not on the flood risk listNR20 5FF: not on the flood risk listNR20 5FH: not on the flood risk listNR20 5FJ: not on the flood risk listNR20 5GA: not on the flood risk listNR20 5GD: not on the flood risk listNR20 5GY: not on the flood risk listNR20 5HB: not on the flood risk listNR20 5HF: not on the flood risk listNR20 5HG: not on the flood risk listNR20 5HL: not on the flood risk listNR20 5HU: not on the flood risk listNR20 5HW: not on the flood risk listNR20 5HY: not on the flood risk listNR20 5JD: not on the flood risk listNR20 5JG: not on the flood risk listNR20 5JQ: not on the flood risk listNR20 5JR: not on the flood risk listNR20 5JT: not on the flood risk listNR20 5JU: not on the flood risk listNR20 5JW: not on the flood risk listNR20 5JX: not on the flood risk listNR20 5JY: not on the flood risk listNR20 5JZ: not on the flood risk listNR20 5LA: not on the flood risk listNR20 5LB: not on the flood risk listNR20 5LD: not on the flood risk listNR20 5LF: not on the flood risk listNR20 5LH: not on the flood risk listNR20 5LJ: not on the flood risk listNR20 5LL: not on the flood risk listNR20 5LN: not on the flood risk listNR20 5LP: not on the flood risk listNR20 5LQ: not on the flood risk listNR20 5LS: not on the flood risk listNR20 5LT: not on the flood risk listNR20 5LU: not on the flood risk listNR20 5LW: not on the flood risk listNR20 5LX: not on the flood risk listNR20 5LZ: not on the flood risk listNR20 5NA: not on the flood risk listNR20 5NE: not on the flood risk listNR20 5NF: not on the flood risk listNR20 5NG: not on the flood risk listNR20 5NH: not on the flood risk listNR20 5NJ: not on the flood risk listNR20 5NN: not on the flood risk listNR20 5NP: not on the flood risk listNR20 5NQ: not on the flood risk listNR20 5NR: not on the flood risk listNR20 5NT: not on the flood risk listNR20 5NU: not on the flood risk listNR20 5NW: not on the flood risk listNR20 5NZ: not on the flood risk listNR20 5PA: not on the flood risk listNR20 5PD: not on the flood risk listNR20 5PE: not on the flood risk listNR20 5PF: not on the flood risk listNR20 5PG: not on the flood risk listNR20 5PH: not on the flood risk listNR20 5PJ: not on the flood risk listNR20 5PL: not on the flood risk listNR20 5PN: not on the flood risk listNR20 5PP: not on the flood risk listNR20 5PQ: not on the flood risk listNR20 5PR: not on the flood risk listNR20 5PS: not on the flood risk listNR20 5PT: not on the flood risk listNR20 5PU: not on the flood risk listNR20 5PW: not on the flood risk listNR20 5PX: not on the flood risk listNR20 5PY: not on the flood risk listNR20 5QA: not on the flood risk listNR20 5QB: not on the flood risk listNR20 5QD: not on the flood risk listNR20 5QE: not on the flood risk listNR20 5QF: not on the flood risk listNR20 5QG: not on the flood risk listNR20 5QH: not on the flood risk listNR20 5QJ: not on the flood risk listNR20 5QL: not on the flood risk listNR20 5QP: not on the flood risk listNR20 5QQ: not on the flood risk listNR20 5QR: not on the flood risk listNR20 5QS: not on the flood risk listNR20 5QT: not on the flood risk listNR20 5QU: not on the flood risk listNR20 5QW: not on the flood risk listNR20 5QX: not on the flood risk listNR20 5QY: not on the flood risk listNR20 5RH: not on the flood risk listNR20 5RP: not on the flood risk listNR20 5RR: not on the flood risk listNR20 5RT: not on the flood risk listNR20 5RW: not on the flood risk listNR20 5RX: not on the flood risk listNR20 5RZ: not on the flood risk listNR20 5SA: not on the flood risk listNR20 5SB: not on the flood risk listNR20 5SD: not on the flood risk listNR20 5SE: not on the flood risk listNR20 5SG: not on the flood risk listNR20 5SH: not on the flood risk listNR20 5SJ: not on the flood risk listNR20 5SL: not on the flood risk listNR20 5SP: not on the flood risk listNR20 5SR: not on the flood risk listNR20 5SS: not on the flood risk listNR20 5ST: not on the flood risk listNR20 5SY: not on the flood risk listNR20 5SZ: not on the flood risk listNR20 5TE: not on the flood risk listNR20 5TF: not on the flood risk listNR20 5TP: not on the flood risk listNR20 5TQ: not on the flood risk listNR20 5TT: not on the flood risk listNR20 5TU: not on the flood risk listNR20 5TX: not on the flood risk listNR20 5UA: not on the flood risk listNR20 3EG: low flood risk at worstNR20 3EH: low flood risk at worstNR20 3EJ: low flood risk at worstNR20 3EN: low flood risk at worstNR20 3EW: low flood risk at worstNR20 3PF: low flood risk at worstNR20 3PG: low flood risk at worstNR20 3RQ: low flood risk at worstNR20 4DF: low flood risk at worstNR20 4HL: low flood risk at worstNR20 4RQ: low flood risk at worstNR20 5EW: low flood risk at worstNR20 5HP: low flood risk at worstNR20 5HS: low flood risk at worstNR20 5JH: low flood risk at worstNR20 5JP: low flood risk at worstNR20 5JS: low flood risk at worstNR20 5LE: low flood risk at worstNR20 5RD: low flood risk at worstNR20 5RG: low flood risk at worstNR20 5RN: low flood risk at worstNR20 5RQ: low flood risk at worstNR20 5TW: low flood risk at worstNR20 3RH: medium flood risk at worstNR20 4DT: medium flood risk at worstNR20 4RX: medium flood risk at worstNR20 5HE: medium flood risk at worstNR20 5HJ: medium flood risk at worstNR20 5PB: medium flood risk at worstNR20 5SX: medium flood risk at worstNR20 3HJ: high flood riskNR20 3EQ: high flood riskNR20 3JW: high flood riskNR20 3RG: high flood riskNR20 4AL: high flood riskNR20 4BL: high flood riskNR20 4DD: high flood riskNR20 4HN: high flood riskNR20 4HS: high flood riskNR20 4HT: high flood riskNR20 4HX: high flood riskNR20 5HN: high flood riskNR20 5HR: high flood riskNR20 5LY: high flood riskNR20 5NY: high flood riskNR20 5RE: high flood riskNR20 5RJ: high flood riskNR20 5RL: high flood riskNR20 5RS: high flood riskNR20 5SQ: high flood risk DerehamMattishallReephamSwanton Morley Map of every postcode in NR20, by flood risk Of the 868 postcodes in NR20 that ONS places, 20 have a home or business at high risk, 8 are at medium risk at worst, 23 are at low risk at worst and 817 are not on the Environment Agency's at-risk list. Places named: Dereham, Mattishall, Swanton Morley. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 5 km. DerehamMattishallSwanton Morley
  • A home or business at high risk: 20
  • At medium risk at worst: 8
  • At low risk at worst: 23
  • At very low risk only: 0
  • Not on the at-risk list: 817

Of the 868 postcodes in NR20 that ONS places, 20 have a home or business at high risk, 8 are at medium risk at worst, 23 are at low risk at worst and 817 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. 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 52.7219, longitude 0.9811. 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

20 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.

NR20 5HN11 at high riskNR20 5LY3 at high riskNR20 5HR3 at high riskNR20 5NY3 at high riskNR20 3RG2 at high riskNR20 4HT2 at high riskNR20 5RE2 at high riskNR20 5RL2 at high riskNR20 5RS2 at high riskNR20 4AL1 at high riskNR20 4HN1 at high riskNR20 4HX1 at high risk

What broadband can you get in NR20?

Ofcom reports on 853 of the 868 postcodes in NR20. At 299 of them every home and business can get gigabit broadband, and at 48 some cannot get decent broadband (10 Mbit/s).

Postcodes where every home can get gigabit299 of 853
Postcodes where every home can get superfast668 of 853
Postcodes where some cannot get decent broadband48 of 853

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 NR20 at risk of flooding?

51 of the 868 postcodes in NR20 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 64 homes and businesses in an area at high or medium risk.

Homes and businesses in an area at risk, at 51 of 868 postcodes High: 41Medium: 23Low: 102

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 NR20?

Homes in NR20 sold for a typical £310,000 in the 12 months to August 2026, across 227 sales, down 6.6% on the 12 months before, HM Land Registry's figures show.

£310,000 typical price, the 12 months to August 2026
£332,000 12 months to August 2025
▼ down 6.6% on the 12 months before
  • Detached £387,500 133 sales
  • Semi-detached £250,000 61 sales
  • Terraced £205,000 31 sales
  • Flat or maisonette 2 sales, too few to price

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 NR20

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

NR20 3317 postcodesNR20 4291 postcodesNR20 5260 postcodes
UK postcode format explained

Places in NR20

Towns and villages with postcodes in NR20, and how many each has here.

Dereham postcodes,95Mattishall postcodes,83Swanton Morley postcodes,75

Who covers NR20

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

  • Mid Norfolk758
  • Broadland and Fakenham110

Police force areas

  • Norfolk868

Next to NR20

NR19 postcode district NR21 postcode district All NR districts Dereham postcodes

"Next to" is by number: the districts before and after NR20 in the NR area.

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