HP2 4 postcode sector in the HP2 district

HP2 4 is a sector of the HP2 district: every postcode that starts HP2 4. It has 290 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 HP2 4 sector, by flood risk

Map of every postcode in the HP2 4 sector, by flood risk Of the 290 postcodes in the HP2 4 sector that ONS places, 290 are not on the Environment Agency's at-risk list. Places named: Hemel Hempstead. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. A414 HP2 4AA: not on the flood risk listHP2 4AB: not on the flood risk listHP2 4AD: not on the flood risk listHP2 4AE: not on the flood risk listHP2 4AF: not on the flood risk listHP2 4AG: not on the flood risk listHP2 4AH: not on the flood risk listHP2 4AJ: not on the flood risk listHP2 4AL: not on the flood risk listHP2 4AN: not on the flood risk listHP2 4AP: not on the flood risk listHP2 4AQ: not on the flood risk listHP2 4AR: not on the flood risk listHP2 4AS: not on the flood risk listHP2 4AT: not on the flood risk listHP2 4AU: not on the flood risk listHP2 4AW: not on the flood risk listHP2 4AX: not on the flood risk listHP2 4AZ: not on the flood risk listHP2 4BA: not on the flood risk listHP2 4BB: not on the flood risk listHP2 4BD: not on the flood risk listHP2 4BE: not on the flood risk listHP2 4BF: not on the flood risk listHP2 4BG: not on the flood risk listHP2 4BH: not on the flood risk listHP2 4BJ: not on the flood risk listHP2 4BL: not on the flood risk listHP2 4BN: not on the flood risk listHP2 4BP: not on the flood risk listHP2 4BQ: not on the flood risk listHP2 4BS: not on the flood risk listHP2 4BT: not on the flood risk listHP2 4BU: not on the flood risk listHP2 4BW: not on the flood risk listHP2 4BX: not on the flood risk listHP2 4BY: not on the flood risk listHP2 4BZ: not on the flood risk listHP2 4DA: not on the flood risk listHP2 4DB: not on the flood risk listHP2 4DD: not on the flood risk listHP2 4DE: not on the flood risk listHP2 4DF: not on the flood risk listHP2 4DG: not on the flood risk listHP2 4DH: not on the flood risk listHP2 4DJ: not on the flood risk listHP2 4DL: not on the flood risk listHP2 4DN: not on the flood risk listHP2 4DP: not on the flood risk listHP2 4DQ: not on the flood risk listHP2 4DR: not on the flood risk listHP2 4DS: not on the flood risk listHP2 4DT: not on the flood risk listHP2 4DU: not on the flood risk listHP2 4DW: not on the flood risk listHP2 4DX: not on the flood risk listHP2 4DY: not on the flood risk listHP2 4DZ: not on the flood risk listHP2 4EA: not on the flood risk listHP2 4EB: not on the flood risk listHP2 4ED: not on the flood risk listHP2 4EE: not on the flood risk listHP2 4EF: not on the flood risk listHP2 4EH: not on the flood risk listHP2 4EJ: not on the flood risk listHP2 4EL: not on the flood risk listHP2 4EN: not on the flood risk listHP2 4EP: not on the flood risk listHP2 4EQ: not on the flood risk listHP2 4ER: not on the flood risk listHP2 4ES: not on the flood risk listHP2 4ET: not on the flood risk listHP2 4EU: not on the flood risk listHP2 4EW: not on the flood risk listHP2 4EX: not on the flood risk listHP2 4EY: not on the flood risk listHP2 4EZ: not on the flood risk listHP2 4FA: not on the flood risk listHP2 4FB: not on the flood risk listHP2 4FD: not on the flood risk listHP2 4FE: not on the flood risk listHP2 4FF: not on the flood risk listHP2 4FG: not on the flood risk listHP2 4FH: not on the flood risk listHP2 4FL: not on the flood risk listHP2 4FN: not on the flood risk listHP2 4FP: not on the flood risk listHP2 4FQ: not on the flood risk listHP2 4FR: not on the flood risk listHP2 4FS: not on the flood risk listHP2 4FT: not on the flood risk listHP2 4FU: not on the flood risk listHP2 4FW: not on the flood risk listHP2 4FY: not on the flood risk listHP2 4FZ: not on the flood risk listHP2 4GA: not on the flood risk listHP2 4GB: not on the flood risk listHP2 4GD: not on the flood risk listHP2 4GE: not on the flood risk listHP2 4GF: not on the flood risk listHP2 4GG: not on the flood risk listHP2 4GJ: not on the flood risk listHP2 4GL: not on the flood risk listHP2 4GN: not on the flood risk listHP2 4GP: not on the flood risk listHP2 4GQ: not on the flood risk listHP2 4GW: not on the flood risk listHP2 4GY: not on the flood risk listHP2 4HA: not on the flood risk listHP2 4HB: not on the flood risk listHP2 4HD: not on the flood risk listHP2 4HE: not on the flood risk listHP2 4HF: not on the flood risk listHP2 4HG: not on the flood risk listHP2 4HH: not on the flood risk listHP2 4HJ: not on the flood risk listHP2 4HL: not on the flood risk listHP2 4HN: not on the flood risk listHP2 4HP: not on the flood risk listHP2 4HQ: not on the flood risk listHP2 4HR: not on the flood risk listHP2 4HS: not on the flood risk listHP2 4HT: not on the flood risk listHP2 4HU: not on the flood risk listHP2 4HW: not on the flood risk listHP2 4HX: not on the flood risk listHP2 4HY: not on the flood risk listHP2 4HZ: not on the flood risk listHP2 4JA: not on the flood risk listHP2 4JD: not on the flood risk listHP2 4JE: not on the flood risk listHP2 4JF: not on the flood risk listHP2 4JG: not on the flood risk listHP2 4JH: not on the flood risk listHP2 4JJ: not on the flood risk listHP2 4JL: not on the flood risk listHP2 4JN: not on the flood risk listHP2 4JP: not on the flood risk listHP2 4JQ: not on the flood risk listHP2 4JS: not on the flood risk listHP2 4JU: not on the flood risk listHP2 4JW: not on the flood risk listHP2 4JX: not on the flood risk listHP2 4JY: not on the flood risk listHP2 4JZ: not on the flood risk listHP2 4LA: not on the flood risk listHP2 4LB: not on the flood risk listHP2 4LD: not on the flood risk listHP2 4LE: not on the flood risk listHP2 4LF: not on the flood risk listHP2 4LG: not on the flood risk listHP2 4LH: not on the flood risk listHP2 4LJ: not on the flood risk listHP2 4LL: not on the flood risk listHP2 4LN: not on the flood risk listHP2 4LP: not on the flood risk listHP2 4LQ: not on the flood risk listHP2 4LS: not on the flood risk listHP2 4LW: not on the flood risk listHP2 4LX: not on the flood risk listHP2 4LY: not on the flood risk listHP2 4LZ: not on the flood risk listHP2 4NA: not on the flood risk listHP2 4NB: not on the flood risk listHP2 4ND: not on the flood risk listHP2 4NE: not on the flood risk listHP2 4NF: not on the flood risk listHP2 4NG: not on the flood risk listHP2 4NH: not on the flood risk listHP2 4NJ: not on the flood risk listHP2 4NL: not on the flood risk listHP2 4NN: not on the flood risk listHP2 4NP: not on the flood risk listHP2 4NQ: not on the flood risk listHP2 4NR: not on the flood risk listHP2 4NS: not on the flood risk listHP2 4NT: not on the flood risk listHP2 4NU: not on the flood risk listHP2 4NW: not on the flood risk listHP2 4NX: not on the flood risk listHP2 4NY: not on the flood risk listHP2 4NZ: not on the flood risk listHP2 4PA: not on the flood risk listHP2 4PB: not on the flood risk listHP2 4PD: not on the flood risk listHP2 4PE: not on the flood risk listHP2 4PF: not on the flood risk listHP2 4PG: not on the flood risk listHP2 4PH: not on the flood risk listHP2 4PJ: not on the flood risk listHP2 4PL: not on the flood risk listHP2 4PN: not on the flood risk listHP2 4PP: not on the flood risk listHP2 4PQ: not on the flood risk listHP2 4PR: not on the flood risk listHP2 4PS: not on the flood risk listHP2 4PT: not on the flood risk listHP2 4PU: not on the flood risk listHP2 4PW: not on the flood risk listHP2 4PX: not on the flood risk listHP2 4PZ: not on the flood risk listHP2 4QA: not on the flood risk listHP2 4QB: not on the flood risk listHP2 4QE: not on the flood risk listHP2 4QF: not on the flood risk listHP2 4QG: not on the flood risk listHP2 4QH: not on the flood risk listHP2 4QJ: not on the flood risk listHP2 4QL: not on the flood risk listHP2 4QN: not on the flood risk listHP2 4QP: not on the flood risk listHP2 4QQ: not on the flood risk listHP2 4QR: not on the flood risk listHP2 4QS: not on the flood risk listHP2 4QT: not on the flood risk listHP2 4QU: not on the flood risk listHP2 4QW: not on the flood risk listHP2 4QX: not on the flood risk listHP2 4QY: not on the flood risk listHP2 4QZ: not on the flood risk listHP2 4RA: not on the flood risk listHP2 4RE: not on the flood risk listHP2 4RF: not on the flood risk listHP2 4RH: not on the flood risk listHP2 4RJ: not on the flood risk listHP2 4RN: not on the flood risk listHP2 4RP: not on the flood risk listHP2 4RQ: not on the flood risk listHP2 4RR: not on the flood risk listHP2 4RS: not on the flood risk listHP2 4RT: not on the flood risk listHP2 4RU: not on the flood risk listHP2 4RW: not on the flood risk listHP2 4RX: not on the flood risk listHP2 4RZ: not on the flood risk listHP2 4SA: not on the flood risk listHP2 4SB: not on the flood risk listHP2 4SD: not on the flood risk listHP2 4SE: not on the flood risk listHP2 4SQ: not on the flood risk listHP2 4TB: not on the flood risk listHP2 4TF: not on the flood risk listHP2 4TJ: not on the flood risk listHP2 4TL: not on the flood risk listHP2 4TN: not on the flood risk listHP2 4TP: not on the flood risk listHP2 4TQ: not on the flood risk listHP2 4TR: not on the flood risk listHP2 4TT: not on the flood risk listHP2 4TU: not on the flood risk listHP2 4TZ: not on the flood risk listHP2 4UA: not on the flood risk listHP2 4UB: not on the flood risk listHP2 4UD: not on the flood risk listHP2 4UE: not on the flood risk listHP2 4UG: not on the flood risk listHP2 4UN: not on the flood risk listHP2 4UP: not on the flood risk listHP2 4UQ: not on the flood risk listHP2 4UT: not on the flood risk listHP2 4UU: not on the flood risk listHP2 4UW: not on the flood risk listHP2 4UX: not on the flood risk listHP2 4UY: not on the flood risk listHP2 4WL: not on the flood risk listHP2 4XE: not on the flood risk listHP2 4XF: not on the flood risk listHP2 4XH: not on the flood risk listHP2 4XP: not on the flood risk listHP2 4XY: not on the flood risk listHP2 4YJ: not on the flood risk listHP2 4YP: not on the flood risk listHP2 4ZA: not on the flood risk listHP2 4ZB: not on the flood risk listHP2 4ZE: not on the flood risk listHP2 4ZF: not on the flood risk listHP2 4ZG: not on the flood risk listHP2 4ZP: not on the flood risk listHP2 4ZW: not on the flood risk list Hemel Hempstead Map of every postcode in the HP2 4 sector, by flood risk Of the 290 postcodes in the HP2 4 sector that ONS places, 290 are not on the Environment Agency's at-risk list. Places named: Hemel Hempstead. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. Hemel Hempstead
  • A home or business at high risk: 0
  • At medium risk at worst: 0
  • At low risk at worst: 0
  • At very low risk only: 0
  • Not on the at-risk list: 290

Of the 290 postcodes in the HP2 4 sector that ONS places, 290 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

What do homes sell for in HP2 4?

Homes in HP2 4 sold for a typical £413,750 in the 12 months to August 2026, across 114 sales, down 1.5% on the 12 months before, HM Land Registry's figures show.

£413,750 typical price, the 12 months to August 2026
£420,000 12 months to August 2025
▼ down 1.5% on the 12 months before
  • Detached £605,000 23 sales
  • Semi-detached £473,750 14 sales
  • Terraced £424,000 44 sales
  • Flat or maisonette £212,000 33 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 HP2 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 HP2 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.

HP2 4AAHP2 4ABHP2 4ADHP2 4AEHP2 4AFHP2 4AGHP2 4AHHP2 4AJHP2 4ALHP2 4ANHP2 4APHP2 4AQHP2 4ARHP2 4ASHP2 4ATHP2 4AUHP2 4AWHP2 4AXHP2 4AYHP2 4AZHP2 4BAHP2 4BBHP2 4BDHP2 4BEHP2 4BFHP2 4BGHP2 4BHHP2 4BJHP2 4BLHP2 4BNHP2 4BPHP2 4BQHP2 4BSHP2 4BTHP2 4BUHP2 4BWHP2 4BXHP2 4BYHP2 4BZHP2 4DAHP2 4DBHP2 4DDHP2 4DEHP2 4DFHP2 4DGHP2 4DHHP2 4DJHP2 4DLHP2 4DNHP2 4DPHP2 4DQHP2 4DRHP2 4DSHP2 4DTHP2 4DUHP2 4DWHP2 4DXHP2 4DYHP2 4DZHP2 4EAHP2 4EBHP2 4EDHP2 4EEHP2 4EFHP2 4EGHP2 4EHHP2 4EJHP2 4ELHP2 4ENHP2 4EPHP2 4EQHP2 4ERHP2 4ESHP2 4ETHP2 4EUHP2 4EWHP2 4EXHP2 4EYHP2 4EZHP2 4FAHP2 4FBHP2 4FDHP2 4FEHP2 4FFHP2 4FGHP2 4FHHP2 4FLHP2 4FNHP2 4FPHP2 4FQHP2 4FRHP2 4FSHP2 4FTHP2 4FUHP2 4FWHP2 4FYHP2 4FZHP2 4GAHP2 4GBHP2 4GDHP2 4GEHP2 4GFHP2 4GGHP2 4GHHP2 4GJHP2 4GLHP2 4GNHP2 4GPHP2 4GQHP2 4GRHP2 4GWHP2 4GYHP2 4GZHP2 4HAHP2 4HBHP2 4HDHP2 4HEHP2 4HFHP2 4HGHP2 4HHHP2 4HJHP2 4HLHP2 4HNHP2 4HPHP2 4HQHP2 4HRHP2 4HSHP2 4HTHP2 4HUHP2 4HWHP2 4HXHP2 4HYHP2 4HZHP2 4JAHP2 4JDHP2 4JEHP2 4JFHP2 4JGHP2 4JHHP2 4JJHP2 4JLHP2 4JNHP2 4JPHP2 4JQHP2 4JSHP2 4JTHP2 4JUHP2 4JWHP2 4JXHP2 4JYHP2 4JZHP2 4LAHP2 4LBHP2 4LDHP2 4LEHP2 4LFHP2 4LGHP2 4LHHP2 4LJHP2 4LLHP2 4LNHP2 4LPHP2 4LQHP2 4LSHP2 4LWHP2 4LXHP2 4LYHP2 4LZHP2 4NAHP2 4NBHP2 4NDHP2 4NEHP2 4NFHP2 4NGHP2 4NHHP2 4NJHP2 4NLHP2 4NNHP2 4NPHP2 4NQHP2 4NRHP2 4NSHP2 4NTHP2 4NUHP2 4NWHP2 4NXHP2 4NYHP2 4NZHP2 4PAHP2 4PBHP2 4PDHP2 4PEHP2 4PFHP2 4PGHP2 4PHHP2 4PJHP2 4PLHP2 4PNHP2 4PPHP2 4PQHP2 4PRHP2 4PSHP2 4PTHP2 4PUHP2 4PWHP2 4PXHP2 4PZHP2 4QAHP2 4QBHP2 4QEHP2 4QFHP2 4QGHP2 4QHHP2 4QJHP2 4QLHP2 4QNHP2 4QPHP2 4QQHP2 4QRHP2 4QSHP2 4QTHP2 4QUHP2 4QWHP2 4QXHP2 4QYHP2 4QZHP2 4RAHP2 4REHP2 4RFHP2 4RHHP2 4RJHP2 4RNHP2 4RPHP2 4RQHP2 4RRHP2 4RSHP2 4RTHP2 4RUHP2 4RWHP2 4RXHP2 4RZHP2 4SAHP2 4SBHP2 4SDHP2 4SEHP2 4SQHP2 4SRHP2 4STHP2 4TBHP2 4TFHP2 4TJHP2 4TLHP2 4TNHP2 4TPHP2 4TQHP2 4TRHP2 4TTHP2 4TUHP2 4TZHP2 4UAHP2 4UBHP2 4UDHP2 4UEHP2 4UGHP2 4UNHP2 4UPHP2 4UQHP2 4URHP2 4UTHP2 4UUHP2 4UWHP2 4UXHP2 4UYHP2 4WLHP2 4XEHP2 4XFHP2 4XHHP2 4XPHP2 4XYHP2 4YJHP2 4YLHP2 4YPHP2 4ZAHP2 4ZBHP2 4ZDHP2 4ZEHP2 4ZFHP2 4ZGHP2 4ZPHP2 4ZW

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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