HP5 1 postcode sector in the HP5 district

HP5 1 is a sector of the HP5 district: every postcode that starts HP5 1. It has 246 postcodes in use, 10 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 HP5 1 sector, by flood risk

Map of every postcode in the HP5 1 sector, by flood risk Of the 246 postcodes in the HP5 1 sector that ONS places, 40 have a home or business at high risk, 9 are at medium risk at worst, 13 are at low risk at worst and 184 are not on the Environment Agency's at-risk list. 3 groups of postcodes at high or medium risk are outlined: 20 postcodes at high or medium risk; 8 postcodes at high or medium risk; 5 postcodes at high or medium risk. Places named: Chesham. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. A416 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 1AJ: 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 1BU: not on the flood risk listHP5 1DA: not on the flood risk listHP5 1DB: not on the flood risk listHP5 1DE: not on the flood risk listHP5 1DG: not on the flood risk listHP5 1DP: not on the flood risk listHP5 1DS: not on the flood risk listHP5 1DX: not on the flood risk listHP5 1EE: not on the flood risk listHP5 1EU: 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 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 1GN: not on the flood risk listHP5 1GR: not on the flood risk listHP5 1GT: not on the flood risk listHP5 1HH: not on the flood risk listHP5 1HL: not on the flood risk listHP5 1JA: not on the flood risk listHP5 1JB: not on the flood risk listHP5 1JJ: not on the flood risk listHP5 1JP: not on the flood risk listHP5 1JR: not on the flood risk listHP5 1JS: not on the flood risk listHP5 1JT: not on the flood risk listHP5 1JW: 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 1LP: 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 1LX: 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 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 1PD: not on the flood risk listHP5 1PF: not on the flood risk listHP5 1PJ: not on the flood risk listHP5 1PN: not on the flood risk listHP5 1PR: not on the flood risk listHP5 1PS: not on the flood risk listHP5 1PT: not on the flood risk listHP5 1PU: not on the flood risk listHP5 1PW: not on the flood risk listHP5 1PY: not on the flood risk listHP5 1QA: not on the flood risk listHP5 1QD: 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 1QR: 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 1RG: 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 1UT: 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 1YE: 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 1EJ: low flood risk at worstHP5 1ET: low flood risk at worstHP5 1EZ: low flood risk at worstHP5 1HS: low flood risk at worstHP5 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 1LN: medium 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 1BX: high flood riskHP5 1EA: high flood riskHP5 1EB: high flood riskHP5 1EF: high flood riskHP5 1EG: high flood riskHP5 1ER: high flood riskHP5 1FE: high flood riskHP5 1FX: high flood riskHP5 1GW: high flood riskHP5 1HR: high flood riskHP5 1JD: high flood riskHP5 1JH: high flood riskHP5 1JL: high flood riskHP5 1LH: high flood riskHP5 1NG: high flood riskHP5 1NL: high flood riskHP5 1NQ: high flood riskHP5 1NZ: high flood riskHP5 1PG: high flood riskHP5 1PQ: high flood riskHP5 1PX: high flood riskHP5 1QE: high flood riskHP5 1QJ: high flood riskHP5 1QQ: high flood riskHP5 1SE: 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 risk Chesham 20 postcodes at high or medium risk, outlined: this goes to HP5 1EP, the one with most homes and businesses at high risk20 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 the HP5 1 sector, by flood risk Of the 246 postcodes in the HP5 1 sector that ONS places, 40 have a home or business at high risk, 9 are at medium risk at worst, 13 are at low risk at worst and 184 are not on the Environment Agency's at-risk list. 3 groups of postcodes at high or medium risk are outlined: 20 postcodes at high or medium risk; 8 postcodes at high or medium risk; 5 postcodes at high or medium risk. Places named: Chesham, Amersham. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2 km. A416 CheshamAmersham
  • A home or business at high risk: 40
  • At medium risk at worst: 9
  • At low risk at worst: 13
  • At very low risk only: 0
  • Not on the at-risk list: 184
  • Outline: where 5 or more postcodes at high or medium risk lie together

Of the 246 postcodes in the HP5 1 sector that ONS places, 40 have a home or business at high risk, 9 are at medium risk at worst, 13 are at low risk at worst and 184 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.

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

40 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 1HG16 at high riskHP5 1BW12 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 riskHP5 1BG7 at high riskHP5 1ES7 at high risk

Where the postcodes at high or medium risk lie together

  • 20 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 do homes sell for in HP5 1?

Homes in HP5 1 sold for a typical £451,500 in the 12 months to August 2026, across 88 sales, up 7.5% on the 12 months before, HM Land Registry's figures show.

£451,500 typical price, the 12 months to August 2026
£420,000 12 months to August 2025
▲ up 7.5% on the 12 months before
  • Detached £915,000 13 sales
  • Semi-detached £572,500 24 sales
  • Terraced £440,000 33 sales
  • Flat or maisonette £200,000 18 sales

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 HP5 1. 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 HP5 1

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.

HP5 1ABHP5 1ADHP5 1AEHP5 1AGHP5 1AHHP5 1AJHP5 1ALHP5 1ANHP5 1APHP5 1AQHP5 1ARHP5 1ASHP5 1ATHP5 1AXHP5 1AYHP5 1AZHP5 1BAHP5 1BBHP5 1BEHP5 1BGHP5 1BPHP5 1BUHP5 1BWHP5 1BXHP5 1DAHP5 1DBHP5 1DEHP5 1DGHP5 1DHHP5 1DPHP5 1DRHP5 1DSHP5 1DUHP5 1DXHP5 1EAHP5 1EBHP5 1EDHP5 1EEHP5 1EFHP5 1EGHP5 1EJHP5 1EPHP5 1ERHP5 1ESHP5 1ETHP5 1EUHP5 1EXHP5 1EYHP5 1EZHP5 1FAHP5 1FEHP5 1FFHP5 1FNHP5 1FQHP5 1FWHP5 1FXHP5 1FYHP5 1FZHP5 1GAHP5 1GBHP5 1GDHP5 1GEHP5 1GHHP5 1GJHP5 1GLHP5 1GNHP5 1GPHP5 1GQHP5 1GRHP5 1GSHP5 1GTHP5 1GUHP5 1GWHP5 1HBHP5 1HEHP5 1HFHP5 1HGHP5 1HHHP5 1HLHP5 1HQHP5 1HRHP5 1HSHP5 1HTHP5 1HUHP5 1HXHP5 1HYHP5 1JAHP5 1JBHP5 1JDHP5 1JHHP5 1JJHP5 1JLHP5 1JNHP5 1JPHP5 1JRHP5 1JSHP5 1JTHP5 1JWHP5 1JXHP5 1JYHP5 1JZHP5 1LDHP5 1LFHP5 1LHHP5 1LNHP5 1LPHP5 1LRHP5 1LSHP5 1LTHP5 1LUHP5 1LWHP5 1LXHP5 1LYHP5 1LZHP5 1NAHP5 1NBHP5 1NDHP5 1NEHP5 1NGHP5 1NHHP5 1NJHP5 1NLHP5 1NNHP5 1NPHP5 1NQHP5 1NRHP5 1NSHP5 1NTHP5 1NWHP5 1NXHP5 1NZHP5 1PAHP5 1PBHP5 1PDHP5 1PEHP5 1PFHP5 1PGHP5 1PJHP5 1PLHP5 1PNHP5 1PQHP5 1PRHP5 1PSHP5 1PTHP5 1PUHP5 1PWHP5 1PXHP5 1PYHP5 1QAHP5 1QDHP5 1QEHP5 1QFHP5 1QGHP5 1QHHP5 1QJHP5 1QLHP5 1QPHP5 1QQHP5 1QRHP5 1QTHP5 1QUHP5 1QXHP5 1RBHP5 1RDHP5 1RFHP5 1RGHP5 1RHHP5 1RJHP5 1RLHP5 1RNHP5 1RPHP5 1RRHP5 1RSHP5 1RTHP5 1RWHP5 1RZHP5 1SAHP5 1SDHP5 1SEHP5 1SFHP5 1SGHP5 1SHHP5 1SJHP5 1SLHP5 1SNHP5 1SPHP5 1SQHP5 1SRHP5 1SSHP5 1SUHP5 1SXHP5 1SYHP5 1SZHP5 1TAHP5 1TBHP5 1THHP5 1TJHP5 1TLHP5 1TNHP5 1TPHP5 1TSHP5 1TTHP5 1TUHP5 1TWHP5 1TYHP5 1TZHP5 1UAHP5 1UDHP5 1UEHP5 1UFHP5 1UGHP5 1UHHP5 1UJHP5 1ULHP5 1UNHP5 1UPHP5 1UQHP5 1URHP5 1UTHP5 1UUHP5 1UYHP5 1UZHP5 1XAHP5 1XBHP5 1XFHP5 1XGHP5 1XHHP5 1XJHP5 1XLHP5 1XNHP5 1XPHP5 1XRHP5 1XSHP5 1XTHP5 1XUHP5 1XWHP5 1XXHP5 1XYHP5 1XZHP5 1YAHP5 1YBHP5 1YDHP5 1YEHP5 1YFHP5 1YGHP5 1YQ

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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