HP5 postcode district: Chesham and around

HP5 is a postcode district in England, with 730 postcodes in use in 4 sectors. It has postcodes in Chesham and Amersham. It is split between 2 councils: Buckinghamshire (728 postcodes) and Dacorum (2). 2 of its 730 postcodes are in Hertfordshire. ONS lists no county for the other 728.

Postcodes in use
730
Sectors
4
Councils
2 councils
Places
2 places

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

Every postcode in HP5, by flood risk

Map of every postcode in HP5, by flood risk Of the 730 postcodes in HP5 that ONS places, 49 have a home or business at high risk, 10 are at medium risk at worst, 14 are at low risk at worst and 657 are not on the Environment Agency's at-risk list. 3 groups of postcodes at high or medium risk are outlined: 29 postcodes at high or medium risk; 8 postcodes at high or medium risk; 5 postcodes at high or medium risk. Places named: Chesham, Bovingdon. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2 km. A416A41A413A4251 HP5 1AB: not on the flood risk listHP5 1AD: not on the flood risk listHP5 1AE: not on the flood risk listHP5 1AG: not on the flood risk listHP5 1AH: not on the flood risk listHP5 1AL: not on the flood risk listHP5 1AN: not on the flood risk listHP5 1AP: not on the flood risk listHP5 1AQ: not on the flood risk listHP5 1AR: not on the flood risk listHP5 1AS: not on the flood risk listHP5 1AT: not on the flood risk listHP5 1AX: not on the flood risk listHP5 1AY: not on the flood risk listHP5 1AZ: not on the flood risk listHP5 1BA: not on the flood risk listHP5 1BB: not on the flood risk listHP5 1BE: not on the flood risk listHP5 1DA: not on the flood risk listHP5 1DB: not on the flood risk listHP5 1DP: not on the flood risk listHP5 1DU: not on the flood risk listHP5 1DX: not on the flood risk listHP5 1EE: not on the flood risk listHP5 1EX: not on the flood risk listHP5 1FA: not on the flood risk listHP5 1FF: not on the flood risk listHP5 1FQ: not on the flood risk listHP5 1FW: not on the flood risk listHP5 1FY: not on the flood risk listHP5 1FZ: not on the flood risk listHP5 1GA: not on the flood risk listHP5 1GB: not on the flood risk listHP5 1GD: not on the flood risk listHP5 1GH: not on the flood risk listHP5 1GJ: not on the flood risk listHP5 1GL: not on the flood risk listHP5 1GN: not on the flood risk listHP5 1GQ: not on the flood risk listHP5 1HH: not on the flood risk listHP5 1HL: not on the flood risk listHP5 1HX: not on the flood risk listHP5 1JJ: not on the flood risk listHP5 1JN: not on the flood risk listHP5 1JP: not on the flood risk listHP5 1JR: not on the flood risk listHP5 1JT: not on the flood risk listHP5 1JX: not on the flood risk listHP5 1JY: not on the flood risk listHP5 1JZ: not on the flood risk listHP5 1LR: not on the flood risk listHP5 1LS: not on the flood risk listHP5 1LT: not on the flood risk listHP5 1LU: not on the flood risk listHP5 1LY: not on the flood risk listHP5 1NA: not on the flood risk listHP5 1NE: not on the flood risk listHP5 1NH: not on the flood risk listHP5 1NN: not on the flood risk listHP5 1NP: not on the flood risk listHP5 1NR: not on the flood risk listHP5 1NS: not on the flood risk listHP5 1NT: not on the flood risk listHP5 1NW: not on the flood risk listHP5 1NX: not on the flood risk listHP5 1PA: not on the flood risk listHP5 1PF: not on the flood risk listHP5 1PR: not on the flood risk listHP5 1PU: not on the flood risk listHP5 1PY: not on the flood risk listHP5 1QF: not on the flood risk listHP5 1QG: not on the flood risk listHP5 1QH: not on the flood risk listHP5 1QL: not on the flood risk listHP5 1QP: not on the flood risk listHP5 1QT: not on the flood risk listHP5 1QU: not on the flood risk listHP5 1QX: not on the flood risk listHP5 1RB: not on the flood risk listHP5 1RD: not on the flood risk listHP5 1RF: not on the flood risk listHP5 1RH: not on the flood risk listHP5 1RJ: not on the flood risk listHP5 1RL: not on the flood risk listHP5 1RN: not on the flood risk listHP5 1RP: not on the flood risk listHP5 1RR: not on the flood risk listHP5 1RS: not on the flood risk listHP5 1RT: not on the flood risk listHP5 1RW: not on the flood risk listHP5 1RZ: not on the flood risk listHP5 1SL: not on the flood risk listHP5 1SN: not on the flood risk listHP5 1SP: not on the flood risk listHP5 1SQ: not on the flood risk listHP5 1SR: not on the flood risk listHP5 1SU: not on the flood risk listHP5 1SX: not on the flood risk listHP5 1SY: not on the flood risk listHP5 1SZ: not on the flood risk listHP5 1TB: not on the flood risk listHP5 1TS: not on the flood risk listHP5 1TY: not on the flood risk listHP5 1TZ: not on the flood risk listHP5 1UA: not on the flood risk listHP5 1UF: not on the flood risk listHP5 1UG: not on the flood risk listHP5 1UH: not on the flood risk listHP5 1UJ: not on the flood risk listHP5 1UL: not on the flood risk listHP5 1UN: not on the flood risk listHP5 1UP: not on the flood risk listHP5 1UQ: not on the flood risk listHP5 1UR: not on the flood risk listHP5 1UU: not on the flood risk listHP5 1UY: not on the flood risk listHP5 1UZ: not on the flood risk listHP5 1XA: not on the flood risk listHP5 1XB: not on the flood risk listHP5 1XF: not on the flood risk listHP5 1XG: not on the flood risk listHP5 1XH: not on the flood risk listHP5 1XJ: not on the flood risk listHP5 1XL: not on the flood risk listHP5 1XN: not on the flood risk listHP5 1XP: not on the flood risk listHP5 1XR: not on the flood risk listHP5 1XS: not on the flood risk listHP5 1XT: not on the flood risk listHP5 1XU: not on the flood risk listHP5 1XW: not on the flood risk listHP5 1XX: not on the flood risk listHP5 1XY: not on the flood risk listHP5 1XZ: not on the flood risk listHP5 1YA: not on the flood risk listHP5 1YB: not on the flood risk listHP5 1YD: not on the flood risk listHP5 1YF: not on the flood risk listHP5 1YG: not on the flood risk listHP5 1YQ: not on the flood risk listHP5 2AB: not on the flood risk listHP5 2AD: not on the flood risk listHP5 2AE: not on the flood risk listHP5 2AG: not on the flood risk listHP5 2AJ: not on the flood risk listHP5 2AN: not on the flood risk listHP5 2AP: not on the flood risk listHP5 2AR: not on the flood risk listHP5 2AT: not on the flood risk listHP5 2AX: not on the flood risk listHP5 2AY: not on the flood risk listHP5 2AZ: not on the flood risk listHP5 2BA: not on the flood risk listHP5 2BB: not on the flood risk listHP5 2BD: not on the flood risk listHP5 2BE: not on the flood risk listHP5 2BG: not on the flood risk listHP5 2BL: not on the flood risk listHP5 2BN: not on the flood risk listHP5 2BP: not on the flood risk listHP5 2BQ: not on the flood risk listHP5 2BS: not on the flood risk listHP5 2BT: not on the flood risk listHP5 2BW: not on the flood risk listHP5 2BX: not on the flood risk listHP5 2BZ: not on the flood risk listHP5 2DA: not on the flood risk listHP5 2DB: not on the flood risk listHP5 2DD: not on the flood risk listHP5 2DE: not on the flood risk listHP5 2DF: not on the flood risk listHP5 2DG: not on the flood risk listHP5 2DH: not on the flood risk listHP5 2DJ: not on the flood risk listHP5 2DL: not on the flood risk listHP5 2DN: not on the flood risk listHP5 2DP: not on the flood risk listHP5 2DQ: not on the flood risk listHP5 2DS: not on the flood risk listHP5 2DU: not on the flood risk listHP5 2DW: not on the flood risk listHP5 2DX: not on the flood risk listHP5 2DY: not on the flood risk listHP5 2DZ: not on the flood risk listHP5 2EA: not on the flood risk listHP5 2ED: not on the flood risk listHP5 2EE: not on the flood risk listHP5 2EF: not on the flood risk listHP5 2EG: not on the flood risk listHP5 2EH: not on the flood risk listHP5 2EJ: not on the flood risk listHP5 2EL: not on the flood risk listHP5 2EN: not on the flood risk listHP5 2EP: not on the flood risk listHP5 2ER: not on the flood risk listHP5 2ET: not on the flood risk listHP5 2EU: not on the flood risk listHP5 2EX: not on the flood risk listHP5 2EY: not on the flood risk listHP5 2EZ: not on the flood risk listHP5 2FE: not on the flood risk listHP5 2FF: not on the flood risk listHP5 2FG: not on the flood risk listHP5 2FN: not on the flood risk listHP5 2FQ: not on the flood risk listHP5 2FU: not on the flood risk listHP5 2FW: not on the flood risk listHP5 2FY: not on the flood risk listHP5 2GF: not on the flood risk listHP5 2GG: not on the flood risk listHP5 2GL: not on the flood risk listHP5 2GP: not on the flood risk listHP5 2GQ: not on the flood risk listHP5 2GS: not on the flood risk listHP5 2GT: not on the flood risk listHP5 2GW: not on the flood risk listHP5 2GY: not on the flood risk listHP5 2GZ: not on the flood risk listHP5 2HB: not on the flood risk listHP5 2HD: not on the flood risk listHP5 2HF: not on the flood risk listHP5 2HG: not on the flood risk listHP5 2HH: not on the flood risk listHP5 2HJ: not on the flood risk listHP5 2HL: not on the flood risk listHP5 2HS: not on the flood risk listHP5 2HT: not on the flood risk listHP5 2HU: not on the flood risk listHP5 2HX: not on the flood risk listHP5 2JE: not on the flood risk listHP5 2JF: not on the flood risk listHP5 2JG: not on the flood risk listHP5 2JJ: not on the flood risk listHP5 2JL: not on the flood risk listHP5 2JP: not on the flood risk listHP5 2JT: not on the flood risk listHP5 2LD: not on the flood risk listHP5 2LE: not on the flood risk listHP5 2LF: not on the flood risk listHP5 2LH: not on the flood risk listHP5 2LJ: not on the flood risk listHP5 2LL: not on the flood risk listHP5 2LN: not on the flood risk listHP5 2LP: not on the flood risk listHP5 2LQ: not on the flood risk listHP5 2LR: not on the flood risk listHP5 2LS: not on the flood risk listHP5 2LT: not on the flood risk listHP5 2LU: not on the flood risk listHP5 2LW: not on the flood risk listHP5 2LX: not on the flood risk listHP5 2LY: not on the flood risk listHP5 2LZ: not on the flood risk listHP5 2NF: not on the flood risk listHP5 2NH: not on the flood risk listHP5 2NN: not on the flood risk listHP5 2NQ: not on the flood risk listHP5 2NR: not on the flood risk listHP5 2NS: not on the flood risk listHP5 2NW: not on the flood risk listHP5 2NY: not on the flood risk listHP5 2PB: not on the flood risk listHP5 2PE: not on the flood risk listHP5 2PF: not on the flood risk listHP5 2PG: not on the flood risk listHP5 2PH: not on the flood risk listHP5 2PJ: not on the flood risk listHP5 2PL: not on the flood risk listHP5 2PN: not on the flood risk listHP5 2PP: not on the flood risk listHP5 2PQ: not on the flood risk listHP5 2PR: not on the flood risk listHP5 2PT: not on the flood risk listHP5 2PX: not on the flood risk listHP5 2PY: not on the flood risk listHP5 2PZ: not on the flood risk listHP5 2QA: not on the flood risk listHP5 2QH: not on the flood risk listHP5 2QJ: not on the flood risk listHP5 2QL: not on the flood risk listHP5 2QN: not on the flood risk listHP5 2QP: not on the flood risk listHP5 2QQ: not on the flood risk listHP5 2QR: not on the flood risk listHP5 2QS: not on the flood risk listHP5 2QT: not on the flood risk listHP5 2QU: not on the flood risk listHP5 2QW: not on the flood risk listHP5 2QX: not on the flood risk listHP5 2QY: not on the flood risk listHP5 2QZ: not on the flood risk listHP5 2RA: not on the flood risk listHP5 2RF: not on the flood risk listHP5 2RG: not on the flood risk listHP5 2RH: not on the flood risk listHP5 2RJ: not on the flood risk listHP5 2RN: not on the flood risk listHP5 2RP: not on the flood risk listHP5 2RQ: not on the flood risk listHP5 2RR: not on the flood risk listHP5 2RS: not on the flood risk listHP5 2RT: not on the flood risk listHP5 2RU: not on the flood risk listHP5 2RW: not on the flood risk listHP5 2RX: not on the flood risk listHP5 2RY: not on the flood risk listHP5 2SB: not on the flood risk listHP5 2SE: not on the flood risk listHP5 2SF: not on the flood risk listHP5 2SG: not on the flood risk listHP5 2SH: not on the flood risk listHP5 2SJ: not on the flood risk listHP5 2SL: not on the flood risk listHP5 2SN: not on the flood risk listHP5 2SQ: not on the flood risk listHP5 2SS: not on the flood risk listHP5 2ST: not on the flood risk listHP5 2SU: not on the flood risk listHP5 2SX: not on the flood risk listHP5 2SY: not on the flood risk listHP5 2SZ: not on the flood risk listHP5 2TA: not on the flood risk listHP5 2TB: not on the flood risk listHP5 2TE: not on the flood risk listHP5 2TF: not on the flood risk listHP5 2TG: not on the flood risk listHP5 2TH: not on the flood risk listHP5 2TL: not on the flood risk listHP5 2TN: not on the flood risk listHP5 2TP: not on the flood risk listHP5 2TQ: not on the flood risk listHP5 2TR: not on the flood risk listHP5 2TS: not on the flood risk listHP5 2TT: not on the flood risk listHP5 2TX: not on the flood risk listHP5 2TY: not on the flood risk listHP5 2TZ: not on the flood risk listHP5 2UA: not on the flood risk listHP5 2UG: not on the flood risk listHP5 2UH: not on the flood risk listHP5 2UJ: not on the flood risk listHP5 2UL: not on the flood risk listHP5 2UN: not on the flood risk listHP5 2UP: not on the flood risk listHP5 2UQ: not on the flood risk listHP5 2UR: not on the flood risk listHP5 2UT: not on the flood risk listHP5 2UU: not on the flood risk listHP5 2UW: not on the flood risk listHP5 2UX: not on the flood risk listHP5 2UY: not on the flood risk listHP5 2UZ: not on the flood risk listHP5 2WL: not on the flood risk listHP5 2XA: not on the flood risk listHP5 2XB: not on the flood risk listHP5 2XD: not on the flood risk listHP5 2XJ: not on the flood risk listHP5 2XL: not on the flood risk listHP5 2XN: not on the flood risk listHP5 2XP: not on the flood risk listHP5 2XR: not on the flood risk listHP5 2XS: not on the flood risk listHP5 2XT: not on the flood risk listHP5 2XU: not on the flood risk listHP5 2XW: not on the flood risk listHP5 2XX: not on the flood risk listHP5 2YA: not on the flood risk listHP5 2YD: not on the flood risk listHP5 2ZB: not on the flood risk listHP5 2ZD: not on the flood risk listHP5 2ZE: not on the flood risk listHP5 2ZF: not on the flood risk listHP5 2ZP: not on the flood risk listHP5 2ZW: not on the flood risk listHP5 3AA: not on the flood risk listHP5 3AD: not on the flood risk listHP5 3AE: not on the flood risk listHP5 3AF: not on the flood risk listHP5 3AN: not on the flood risk listHP5 3AP: not on the flood risk listHP5 3AR: not on the flood risk listHP5 3AS: not on the flood risk listHP5 3AT: not on the flood risk listHP5 3AU: not on the flood risk listHP5 3AW: not on the flood risk listHP5 3AX: not on the flood risk listHP5 3AY: not on the flood risk listHP5 3BE: not on the flood risk listHP5 3BG: not on the flood risk listHP5 3BH: not on the flood risk listHP5 3BJ: not on the flood risk listHP5 3BL: not on the flood risk listHP5 3BN: not on the flood risk listHP5 3BS: not on the flood risk listHP5 3BU: not on the flood risk listHP5 3BY: not on the flood risk listHP5 3BZ: not on the flood risk listHP5 3DA: not on the flood risk listHP5 3DB: not on the flood risk listHP5 3DD: not on the flood risk listHP5 3DE: not on the flood risk listHP5 3DF: not on the flood risk listHP5 3DH: not on the flood risk listHP5 3DJ: not on the flood risk listHP5 3DL: not on the flood risk listHP5 3DN: not on the flood risk listHP5 3DP: not on the flood risk listHP5 3DQ: not on the flood risk listHP5 3DR: not on the flood risk listHP5 3DW: not on the flood risk listHP5 3EE: not on the flood risk listHP5 3EL: not on the flood risk listHP5 3EN: not on the flood risk listHP5 3EQ: not on the flood risk listHP5 3ET: not on the flood risk listHP5 3EZ: not on the flood risk listHP5 3FD: not on the flood risk listHP5 3FE: not on the flood risk listHP5 3FG: not on the flood risk listHP5 3FH: not on the flood risk listHP5 3FJ: not on the flood risk listHP5 3FL: not on the flood risk listHP5 3FN: not on the flood risk listHP5 3GA: not on the flood risk listHP5 3HB: not on the flood risk listHP5 3HD: not on the flood risk listHP5 3HH: not on the flood risk listHP5 3HJ: not on the flood risk listHP5 3HL: not on the flood risk listHP5 3HN: not on the flood risk listHP5 3HQ: not on the flood risk listHP5 3HR: not on the flood risk listHP5 3HT: not on the flood risk listHP5 3HX: not on the flood risk listHP5 3HY: not on the flood risk listHP5 3HZ: not on the flood risk listHP5 3JA: not on the flood risk listHP5 3JB: not on the flood risk listHP5 3JD: not on the flood risk listHP5 3JE: not on the flood risk listHP5 3JF: not on the flood risk listHP5 3JG: not on the flood risk listHP5 3JH: not on the flood risk listHP5 3JL: not on the flood risk listHP5 3JN: not on the flood risk listHP5 3JP: not on the flood risk listHP5 3JT: not on the flood risk listHP5 3JU: not on the flood risk listHP5 3JX: not on the flood risk listHP5 3JY: not on the flood risk listHP5 3LA: not on the flood risk listHP5 3LB: not on the flood risk listHP5 3LD: not on the flood risk listHP5 3LE: not on the flood risk listHP5 3LF: not on the flood risk listHP5 3LG: not on the flood risk listHP5 3LH: not on the flood risk listHP5 3LJ: not on the flood risk listHP5 3LL: not on the flood risk listHP5 3LN: not on the flood risk listHP5 3LP: not on the flood risk listHP5 3LQ: not on the flood risk listHP5 3LR: not on the flood risk listHP5 3LU: not on the flood risk listHP5 3LW: not on the flood risk listHP5 3LX: not on the flood risk listHP5 3NA: not on the flood risk listHP5 3NB: not on the flood risk listHP5 3NE: not on the flood risk listHP5 3NF: not on the flood risk listHP5 3NH: not on the flood risk listHP5 3NJ: not on the flood risk listHP5 3NP: not on the flood risk listHP5 3NR: not on the flood risk listHP5 3NS: not on the flood risk listHP5 3NT: not on the flood risk listHP5 3NU: not on the flood risk listHP5 3NX: not on the flood risk listHP5 3NY: not on the flood risk listHP5 3NZ: not on the flood risk listHP5 3PA: not on the flood risk listHP5 3PD: not on the flood risk listHP5 3PE: not on the flood risk listHP5 3PF: not on the flood risk listHP5 3PH: not on the flood risk listHP5 3PJ: not on the flood risk listHP5 3PL: not on the flood risk listHP5 3PN: not on the flood risk listHP5 3PP: not on the flood risk listHP5 3PQ: not on the flood risk listHP5 3PS: not on the flood risk listHP5 3PT: not on the flood risk listHP5 3PU: not on the flood risk listHP5 3PW: not on the flood risk listHP5 3PX: not on the flood risk listHP5 3PY: not on the flood risk listHP5 3QE: not on the flood risk listHP5 3QF: not on the flood risk listHP5 3QG: not on the flood risk listHP5 3QJ: not on the flood risk listHP5 3QN: not on the flood risk listHP5 3QP: not on the flood risk listHP5 3QQ: not on the flood risk listHP5 3QR: not on the flood risk listHP5 3QS: not on the flood risk listHP5 3QT: not on the flood risk listHP5 3QW: not on the flood risk listHP5 3QX: not on the flood risk listHP5 3QY: not on the flood risk listHP5 3QZ: not on the flood risk listHP5 3RA: not on the flood risk listHP5 3RB: not on the flood risk listHP5 3RD: not on the flood risk listHP5 3RE: not on the flood risk listHP5 3RH: not on the flood risk listHP5 3RJ: not on the flood risk listHP5 3RL: not on the flood risk listHP5 3RN: not on the flood risk listHP5 3RP: not on the flood risk listHP5 3RR: not on the flood risk listHP5 3RS: not on the flood risk listHP5 3RW: not on the flood risk listHP5 3SA: not on the flood risk listHP5 1HF: low flood risk at worstHP5 1HU: low flood risk at worstHP5 1LF: low flood risk at worstHP5 1LW: low flood risk at worstHP5 1LZ: low flood risk at worstHP5 1ND: low flood risk at worstHP5 1SD: low flood risk at worstHP5 1TT: low flood risk at worstHP5 2JU: low flood risk at worstHP5 1PE: medium flood risk at worstHP5 1SF: medium flood risk at worstHP5 1SG: medium flood risk at worstHP5 1SS: medium flood risk at worstHP5 1TJ: medium flood risk at worstHP5 1TP: medium flood risk at worstHP5 1BG: high flood riskHP5 1BP: high flood riskHP5 1BW: high flood riskHP5 1EP: high flood riskHP5 1EA: high flood riskHP5 1EB: high flood riskHP5 1EF: high flood riskHP5 1FX: high flood riskHP5 1ER: high flood riskHP5 1LH: high flood riskHP5 1GW: high flood riskHP5 1HR: high flood riskHP5 1JD: high flood riskHP5 1JH: high flood riskHP5 1JL: high flood riskHP5 1SA: high flood riskHP5 1NG: high flood riskHP5 1NQ: high flood riskHP5 1NZ: high flood riskHP5 1PG: high flood riskHP5 1PX: high flood riskHP5 1QE: high flood riskHP5 1QJ: high flood riskHP5 1QQ: high flood riskHP5 1SH: high flood riskHP5 1TA: high flood riskHP5 1TH: high flood riskHP5 1TL: high flood riskHP5 1TN: high flood riskHP5 1TU: high flood riskHP5 1UE: high flood riskHP5 2AA: high flood riskHP5 2AF: high flood riskHP5 2AH: high flood riskHP5 2HA: high flood riskHP5 2JB: high flood riskHP5 3DX: high flood riskHP5 3ED: high flood risk CheshamBovingdon 29 postcodes at high or medium risk, outlined: this goes to HP5 1EP, the one with most homes and businesses at high risk29 postcodes at high or medium risk8 postcodes at high or medium risk, outlined: this goes to HP5 1PG, the one with most homes and businesses at high risk8 postcodes at high or medium risk5 postcodes at high or medium risk, outlined: this goes to HP5 1SA, the one with most homes and businesses at high risk5 postcodes at high or medium risk Map of every postcode in HP5, by flood risk Of the 730 postcodes in HP5 that ONS places, 49 have a home or business at high risk, 10 are at medium risk at worst, 14 are at low risk at worst and 657 are not on the Environment Agency's at-risk list. 3 groups of postcodes at high or medium risk are outlined: 29 postcodes at high or medium risk; 8 postcodes at high or medium risk; 5 postcodes at high or medium risk. Places named: Chesham, Bovingdon. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2.5 km. A41A413 CheshamBovingdon 8 postcodes at high or medium risk, outlined: this goes to HP5 1PG, the one with most homes and businesses at high risk8 postcodes at high or medium risk5 postcodes at high or medium risk, outlined: this goes to HP5 1SA, the one with most homes and businesses at high risk5 postcodes at high or medium risk
  • A home or business at high risk: 49
  • At medium risk at worst: 10
  • At low risk at worst: 14
  • At very low risk only: 0
  • Not on the at-risk list: 657
  • Outline: where 5 or more postcodes at high or medium risk lie together

Of the 730 postcodes in HP5 that ONS places, 49 have a home or business at high risk, 10 are at medium risk at worst, 14 are at low risk at worst and 657 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 51.7127, longitude -0.6086. 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.

HP5 1EP40 at high riskHP5 1EG35 at high riskHP5 3DX33 at high riskHP5 1HG16 at high riskHP5 1BW12 at high riskHP5 3DZ11 at high riskHP5 1PG10 at high riskHP5 1EB10 at high riskHP5 1FX10 at high riskHP5 1LH9 at high riskHP5 1BX8 at high riskHP5 1SA8 at high risk

Where the postcodes at high or medium risk lie together

  • 29 postcodes at high or medium risk, outlined on the map. HP5 1EP, is the one with most homes and businesses at high risk.
  • 8 postcodes at high or medium risk, outlined on the map. HP5 1PG, is the one with most homes and businesses at high risk.
  • 5 postcodes at high or medium risk, outlined on the map. HP5 1SA, is the one with most homes and businesses at high risk.

What broadband can you get in HP5?

Ofcom reports on 713 of the 730 postcodes in HP5. At 444 of them every home and business can get gigabit broadband, and at 5 some cannot get decent broadband (10 Mbit/s).

Postcodes where every home can get gigabit444 of 713
Postcodes where every home can get superfast638 of 713
Postcodes where some cannot get decent broadband5 of 713

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 HP5 at risk of flooding?

73 of the 730 postcodes in HP5 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 487 homes and businesses in an area at high or medium risk.

Homes and businesses in an area at risk, at 73 of 730 postcodes High: 328Medium: 159Low: 211

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 HP5?

Homes in HP5 sold for a typical £479,500 in the 12 months to August 2026, across 242 sales, up 9% on the 12 months before, HM Land Registry's figures show.

£479,500 typical price, the 12 months to August 2026
£440,000 12 months to August 2025
▲ up 9% on the 12 months before
  • Detached £860,000 53 sales
  • Semi-detached £555,000 72 sales
  • Terraced £416,375 74 sales
  • Flat or maisonette £230,000 43 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 HP5

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

HP5 1246 postcodesHP5 2287 postcodesHP5 3193 postcodesHP5 94 postcodes
UK postcode format explained

Places in HP5

Towns and villages with postcodes in HP5, and how many each has here.

Chesham postcodes,558Amersham postcodes,4

Who covers HP5

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

  • Chesham and Amersham659
  • Mid Buckinghamshire69
  • Hemel Hempstead2

Police force areas

  • Thames Valley728
  • Hertfordshire2

Next to HP5

HP4 postcode district HP6 postcode district All HP districts Chesham postcodes

"Next to" is by number: the districts before and after HP5 in the HP area.

Check a postcode

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