HP8 4 postcode sector in the HP8 district

HP8 4 is a sector of the HP8 district: every postcode that starts HP8 4. It has 220 postcodes in use, 6 of them large-user postcodes. A large-user postcode is one Royal Mail gives to a single address that gets a lot of mail.

Not sure what a sector is? UK postcode format explained.

Every postcode in the HP8 4 sector, by flood risk

Map of every postcode in the HP8 4 sector, by flood risk Of the 220 postcodes in the HP8 4 sector that ONS places, 6 have a home or business at high risk and 214 are not on the Environment Agency's at-risk list. Places named: Amersham, Little Chalfont, Chalfont St Giles, Seer Green. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. A404A355 HP8 4AA: not on the flood risk listHP8 4AB: not on the flood risk listHP8 4AE: not on the flood risk listHP8 4AF: not on the flood risk listHP8 4AG: not on the flood risk listHP8 4AH: not on the flood risk listHP8 4AJ: not on the flood risk listHP8 4AL: not on the flood risk listHP8 4AN: not on the flood risk listHP8 4AP: not on the flood risk listHP8 4AQ: not on the flood risk listHP8 4AR: not on the flood risk listHP8 4AS: not on the flood risk listHP8 4AW: not on the flood risk listHP8 4AX: not on the flood risk listHP8 4BA: not on the flood risk listHP8 4BB: not on the flood risk listHP8 4BD: not on the flood risk listHP8 4BE: not on the flood risk listHP8 4BG: not on the flood risk listHP8 4BH: not on the flood risk listHP8 4BJ: not on the flood risk listHP8 4BL: not on the flood risk listHP8 4BN: not on the flood risk listHP8 4BP: not on the flood risk listHP8 4BQ: not on the flood risk listHP8 4BS: not on the flood risk listHP8 4BT: not on the flood risk listHP8 4BW: not on the flood risk listHP8 4BX: not on the flood risk listHP8 4BY: not on the flood risk listHP8 4DA: not on the flood risk listHP8 4DB: not on the flood risk listHP8 4DD: not on the flood risk listHP8 4DE: not on the flood risk listHP8 4DF: not on the flood risk listHP8 4DG: not on the flood risk listHP8 4DH: not on the flood risk listHP8 4DJ: not on the flood risk listHP8 4DL: not on the flood risk listHP8 4DN: not on the flood risk listHP8 4DP: not on the flood risk listHP8 4DQ: not on the flood risk listHP8 4DR: not on the flood risk listHP8 4DS: not on the flood risk listHP8 4DT: not on the flood risk listHP8 4DU: not on the flood risk listHP8 4DW: not on the flood risk listHP8 4DX: not on the flood risk listHP8 4DY: not on the flood risk listHP8 4DZ: not on the flood risk listHP8 4EA: not on the flood risk listHP8 4EB: not on the flood risk listHP8 4ED: not on the flood risk listHP8 4EE: not on the flood risk listHP8 4EF: not on the flood risk listHP8 4EG: not on the flood risk listHP8 4EH: not on the flood risk listHP8 4EJ: not on the flood risk listHP8 4EL: not on the flood risk listHP8 4EN: not on the flood risk listHP8 4EP: not on the flood risk listHP8 4EQ: not on the flood risk listHP8 4ER: not on the flood risk listHP8 4ES: not on the flood risk listHP8 4ET: not on the flood risk listHP8 4EU: not on the flood risk listHP8 4EW: not on the flood risk listHP8 4EX: not on the flood risk listHP8 4EY: not on the flood risk listHP8 4FA: not on the flood risk listHP8 4FB: not on the flood risk listHP8 4FF: not on the flood risk listHP8 4FG: not on the flood risk listHP8 4FJ: not on the flood risk listHP8 4FL: not on the flood risk listHP8 4FN: not on the flood risk listHP8 4FP: not on the flood risk listHP8 4HA: not on the flood risk listHP8 4HG: not on the flood risk listHP8 4HH: not on the flood risk listHP8 4HJ: not on the flood risk listHP8 4HL: not on the flood risk listHP8 4HN: not on the flood risk listHP8 4HP: not on the flood risk listHP8 4HQ: not on the flood risk listHP8 4HR: not on the flood risk listHP8 4HS: not on the flood risk listHP8 4HT: not on the flood risk listHP8 4HU: not on the flood risk listHP8 4HW: not on the flood risk listHP8 4HX: not on the flood risk listHP8 4HY: not on the flood risk listHP8 4HZ: not on the flood risk listHP8 4JA: not on the flood risk listHP8 4JB: not on the flood risk listHP8 4JD: not on the flood risk listHP8 4JH: not on the flood risk listHP8 4JJ: not on the flood risk listHP8 4JL: not on the flood risk listHP8 4JN: not on the flood risk listHP8 4JR: not on the flood risk listHP8 4JS: not on the flood risk listHP8 4JT: not on the flood risk listHP8 4JW: not on the flood risk listHP8 4JY: not on the flood risk listHP8 4JZ: not on the flood risk listHP8 4LA: not on the flood risk listHP8 4LB: not on the flood risk listHP8 4LD: not on the flood risk listHP8 4LE: not on the flood risk listHP8 4LF: not on the flood risk listHP8 4LG: not on the flood risk listHP8 4LH: not on the flood risk listHP8 4LJ: not on the flood risk listHP8 4LL: not on the flood risk listHP8 4LN: not on the flood risk listHP8 4LP: not on the flood risk listHP8 4LQ: not on the flood risk listHP8 4LW: not on the flood risk listHP8 4NB: not on the flood risk listHP8 4ND: not on the flood risk listHP8 4NE: not on the flood risk listHP8 4NF: not on the flood risk listHP8 4NG: not on the flood risk listHP8 4NH: not on the flood risk listHP8 4NJ: not on the flood risk listHP8 4NL: not on the flood risk listHP8 4NN: not on the flood risk listHP8 4NQ: not on the flood risk listHP8 4NS: not on the flood risk listHP8 4NT: not on the flood risk listHP8 4NW: not on the flood risk listHP8 4NX: not on the flood risk listHP8 4NY: not on the flood risk listHP8 4NZ: not on the flood risk listHP8 4PB: not on the flood risk listHP8 4PD: not on the flood risk listHP8 4PE: not on the flood risk listHP8 4PF: not on the flood risk listHP8 4PG: not on the flood risk listHP8 4PH: not on the flood risk listHP8 4PP: not on the flood risk listHP8 4PR: not on the flood risk listHP8 4PS: not on the flood risk listHP8 4PT: not on the flood risk listHP8 4PU: not on the flood risk listHP8 4PW: not on the flood risk listHP8 4PX: not on the flood risk listHP8 4PZ: not on the flood risk listHP8 4QD: not on the flood risk listHP8 4QG: not on the flood risk listHP8 4QH: not on the flood risk listHP8 4QJ: not on the flood risk listHP8 4QN: not on the flood risk listHP8 4QR: not on the flood risk listHP8 4QT: not on the flood risk listHP8 4QU: not on the flood risk listHP8 4QX: not on the flood risk listHP8 4QY: not on the flood risk listHP8 4QZ: not on the flood risk listHP8 4RA: not on the flood risk listHP8 4RB: not on the flood risk listHP8 4RD: not on the flood risk listHP8 4RE: not on the flood risk listHP8 4RF: not on the flood risk listHP8 4RG: not on the flood risk listHP8 4RP: not on the flood risk listHP8 4RQ: not on the flood risk listHP8 4RS: not on the flood risk listHP8 4RU: not on the flood risk listHP8 4RX: not on the flood risk listHP8 4RY: not on the flood risk listHP8 4RZ: not on the flood risk listHP8 4SA: not on the flood risk listHP8 4SB: not on the flood risk listHP8 4SD: not on the flood risk listHP8 4SF: not on the flood risk listHP8 4SG: not on the flood risk listHP8 4SH: not on the flood risk listHP8 4SJ: not on the flood risk listHP8 4SL: not on the flood risk listHP8 4SN: not on the flood risk listHP8 4SP: not on the flood risk listHP8 4SQ: not on the flood risk listHP8 4SR: not on the flood risk listHP8 4SS: not on the flood risk listHP8 4SU: not on the flood risk listHP8 4TA: not on the flood risk listHP8 4TG: not on the flood risk listHP8 4TH: not on the flood risk listHP8 4TJ: not on the flood risk listHP8 4TL: not on the flood risk listHP8 4TN: not on the flood risk listHP8 4TQ: not on the flood risk listHP8 4TU: not on the flood risk listHP8 4TX: not on the flood risk listHP8 4TY: not on the flood risk listHP8 4TZ: not on the flood risk listHP8 4UA: not on the flood risk listHP8 4UB: not on the flood risk listHP8 4UD: not on the flood risk listHP8 4UJ: not on the flood risk listHP8 4UT: not on the flood risk listHP8 4XH: not on the flood risk listHP8 4NP: high flood riskHP8 4NR: high flood riskHP8 4QA: high flood riskHP8 4QF: high flood riskHP8 4RT: high flood risk AmershamLittle ChalfontChalfont St GilesSeer Green Map of every postcode in the HP8 4 sector, by flood risk Of the 220 postcodes in the HP8 4 sector that ONS places, 6 have a home or business at high risk and 214 are not on the Environment Agency's at-risk list. Places named: Amersham, Little Chalfont, Chalfont St Giles. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. AmershamLittle ChalfontChalfont St Giles
  • A home or business at high risk: 6
  • At medium risk at worst: 0
  • At low risk at worst: 0
  • At very low risk only: 0
  • Not on the at-risk list: 214

Of the 220 postcodes in the HP8 4 sector that ONS places, 6 have a home or business at high risk and 214 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.

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

Beside each: how many of its homes and businesses the Environment Agency puts at that risk.

HP8 4QA9 at high riskHP8 4QF4 at high riskHP8 4NP2 at high riskHP8 4NR2 at high riskHP8 4RT2 at high riskHP8 4QB1 at high risk

What do homes sell for in HP8 4?

Homes in HP8 4 sold for a typical £730,000 in the 12 months to August 2026, across 71 sales, down 3.9% on the 12 months before, HM Land Registry's figures show.

£730,000 typical price, the 12 months to August 2026
£760,000 12 months to August 2025
▼ down 3.9% on the 12 months before
  • Detached £1,000,000 42 sales
  • Semi-detached £610,000 15 sales
  • Terraced £500,000 10 sales
  • Flat or maisonette 4 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 at the postcodes that start HP8 4. A typical price is the median, the middle sale, given from 5 sales or more.

How we work this out: house prices by postcode

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 HP8 4

Pick a postcode to see its council and MP, broadband, flood risk, what homes sell for, council tax, the nearest schools and stations, and crime around it.

HP8 4AAHP8 4ABHP8 4AEHP8 4AFHP8 4AGHP8 4AHHP8 4AJHP8 4ALHP8 4ANHP8 4APHP8 4AQHP8 4ARHP8 4ASHP8 4AWHP8 4AXHP8 4BAHP8 4BBHP8 4BDHP8 4BEHP8 4BGHP8 4BHHP8 4BJHP8 4BLHP8 4BNHP8 4BPHP8 4BQHP8 4BSHP8 4BTHP8 4BWHP8 4BXHP8 4BYHP8 4DAHP8 4DBHP8 4DDHP8 4DEHP8 4DFHP8 4DGHP8 4DHHP8 4DJHP8 4DLHP8 4DNHP8 4DPHP8 4DQHP8 4DRHP8 4DSHP8 4DTHP8 4DUHP8 4DWHP8 4DXHP8 4DYHP8 4DZHP8 4EAHP8 4EBHP8 4EDHP8 4EEHP8 4EFHP8 4EGHP8 4EHHP8 4EJHP8 4ELHP8 4ENHP8 4EPHP8 4EQHP8 4ERHP8 4ESHP8 4ETHP8 4EUHP8 4EWHP8 4EXHP8 4EYHP8 4FAHP8 4FBHP8 4FDHP8 4FFHP8 4FGHP8 4FJHP8 4FLHP8 4FNHP8 4FPHP8 4HAHP8 4HGHP8 4HHHP8 4HJHP8 4HLHP8 4HNHP8 4HPHP8 4HQHP8 4HRHP8 4HSHP8 4HTHP8 4HUHP8 4HWHP8 4HXHP8 4HYHP8 4HZHP8 4JAHP8 4JBHP8 4JDHP8 4JHHP8 4JJHP8 4JLHP8 4JNHP8 4JRHP8 4JSHP8 4JTHP8 4JWHP8 4JXHP8 4JYHP8 4JZHP8 4LAHP8 4LBHP8 4LDHP8 4LEHP8 4LFHP8 4LGHP8 4LHHP8 4LJHP8 4LLHP8 4LNHP8 4LPHP8 4LQHP8 4LRHP8 4LSHP8 4LWHP8 4NBHP8 4NDHP8 4NEHP8 4NFHP8 4NGHP8 4NHHP8 4NJHP8 4NLHP8 4NNHP8 4NPHP8 4NQHP8 4NRHP8 4NSHP8 4NTHP8 4NWHP8 4NXHP8 4NYHP8 4NZHP8 4PBHP8 4PDHP8 4PEHP8 4PFHP8 4PGHP8 4PHHP8 4PPHP8 4PRHP8 4PSHP8 4PTHP8 4PUHP8 4PWHP8 4PXHP8 4PYHP8 4PZHP8 4QAHP8 4QBHP8 4QDHP8 4QFHP8 4QGHP8 4QHHP8 4QJHP8 4QLHP8 4QNHP8 4QQHP8 4QRHP8 4QSHP8 4QTHP8 4QUHP8 4QWHP8 4QXHP8 4QYHP8 4QZHP8 4RAHP8 4RBHP8 4RDHP8 4REHP8 4RFHP8 4RGHP8 4RPHP8 4RQHP8 4RSHP8 4RTHP8 4RUHP8 4RXHP8 4RYHP8 4RZHP8 4SAHP8 4SBHP8 4SDHP8 4SFHP8 4SGHP8 4SHHP8 4SJHP8 4SLHP8 4SNHP8 4SPHP8 4SQHP8 4SRHP8 4SSHP8 4SUHP8 4TAHP8 4TGHP8 4THHP8 4TJHP8 4TLHP8 4TNHP8 4TQHP8 4TUHP8 4TXHP8 4TYHP8 4TZHP8 4UAHP8 4UBHP8 4UDHP8 4UJHP8 4UTHP8 4XH

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026. Postcodes that have ended are not listed. See all our data sources

What council am I in? The council, borough or local authority for a postcode, and the county council where there is one. What ward am I in? The ward for a postcode, with its council, constituency and parish.

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