BN42 4 postcode sector in the BN42 district

BN42 4 is a sector of the BN42 district: every postcode that starts BN42 4. It has 219 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 BN42 4 sector, and which are new since 2020

Map of every postcode in the BN42 4 sector, by new since 2020 Of the 219 postcodes in the BN42 4 sector that ONS places, 5 are new since 2020 and 214 were in use before 2020. One postcode lies beyond the edge and is listed under the map. Places named: Southwick. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. BN42 4AA: before 2020BN42 4AB: before 2020BN42 4AD: before 2020BN42 4AE: before 2020BN42 4AF: before 2020BN42 4AG: before 2020BN42 4AJ: before 2020BN42 4AL: before 2020BN42 4AN: before 2020BN42 4AP: before 2020BN42 4AQ: before 2020BN42 4AR: before 2020BN42 4AS: before 2020BN42 4AT: before 2020BN42 4AU: before 2020BN42 4AW: before 2020BN42 4AY: before 2020BN42 4AZ: before 2020BN42 4BA: before 2020BN42 4BB: before 2020BN42 4BF: before 2020BN42 4BS: before 2020BN42 4BT: before 2020BN42 4BU: before 2020BN42 4BW: before 2020BN42 4DA: before 2020BN42 4DB: before 2020BN42 4DD: before 2020BN42 4DE: before 2020BN42 4DF: before 2020BN42 4DG: before 2020BN42 4DH: before 2020BN42 4DJ: before 2020BN42 4DL: before 2020BN42 4DN: before 2020BN42 4DP: before 2020BN42 4DQ: before 2020BN42 4DR: before 2020BN42 4DS: before 2020BN42 4DT: before 2020BN42 4DU: before 2020BN42 4DW: before 2020BN42 4DX: before 2020BN42 4DY: before 2020BN42 4DZ: before 2020BN42 4ED: before 2020BN42 4EG: before 2020BN42 4EN: before 2020BN42 4EP: before 2020BN42 4FB: before 2020BN42 4FJ: before 2020BN42 4FL: before 2020BN42 4FN: before 2020BN42 4FP: before 2020BN42 4FR: before 2020BN42 4FS: before 2020BN42 4FT: before 2020BN42 4FU: before 2020BN42 4FW: before 2020BN42 4FX: before 2020BN42 4FY: before 2020BN42 4FZ: before 2020BN42 4GA: before 2020BN42 4GB: before 2020BN42 4GD: before 2020BN42 4GE: before 2020BN42 4GF: before 2020BN42 4GG: before 2020BN42 4GH: before 2020BN42 4GJ: before 2020BN42 4GR: before 2020BN42 4GS: before 2020BN42 4HA: before 2020BN42 4HB: before 2020BN42 4HD: before 2020BN42 4HE: before 2020BN42 4HF: before 2020BN42 4HG: before 2020BN42 4HH: before 2020BN42 4HJ: before 2020BN42 4HL: before 2020BN42 4HN: before 2020BN42 4HP: before 2020BN42 4HQ: before 2020BN42 4HR: before 2020BN42 4HS: before 2020BN42 4HT: before 2020BN42 4HU: before 2020BN42 4HW: before 2020BN42 4JD: before 2020BN42 4LA: before 2020BN42 4LB: before 2020BN42 4LD: before 2020BN42 4LE: before 2020BN42 4LF: before 2020BN42 4LG: before 2020BN42 4LH: before 2020BN42 4LJ: before 2020BN42 4LL: before 2020BN42 4LN: before 2020BN42 4LP: before 2020BN42 4LQ: before 2020BN42 4LR: before 2020BN42 4LS: before 2020BN42 4LT: before 2020BN42 4NA: before 2020BN42 4NB: before 2020BN42 4ND: before 2020BN42 4NE: before 2020BN42 4NF: before 2020BN42 4NG: before 2020BN42 4NH: before 2020BN42 4NJ: before 2020BN42 4NL: before 2020BN42 4NN: before 2020BN42 4NP: before 2020BN42 4NQ: before 2020BN42 4NR: before 2020BN42 4NS: before 2020BN42 4NT: before 2020BN42 4NU: before 2020BN42 4NW: before 2020BN42 4NX: before 2020BN42 4NY: before 2020BN42 4PQ: before 2020BN42 4PR: before 2020BN42 4PS: before 2020BN42 4PT: before 2020BN42 4PU: before 2020BN42 4QB: before 2020BN42 4QD: before 2020BN42 4QE: before 2020BN42 4QF: before 2020BN42 4QG: before 2020BN42 4QH: before 2020BN42 4QJ: before 2020BN42 4QL: before 2020BN42 4QN: before 2020BN42 4QP: before 2020BN42 4QQ: before 2020BN42 4QR: before 2020BN42 4QS: before 2020BN42 4QT: before 2020BN42 4QU: before 2020BN42 4QW: before 2020BN42 4RB: before 2020BN42 4RD: before 2020BN42 4RE: before 2020BN42 4RF: before 2020BN42 4RG: before 2020BN42 4RH: before 2020BN42 4RJ: before 2020BN42 4RL: before 2020BN42 4RN: before 2020BN42 4RP: before 2020BN42 4RQ: before 2020BN42 4RR: before 2020BN42 4RS: before 2020BN42 4RT: before 2020BN42 4RU: before 2020BN42 4RW: before 2020BN42 4RX: before 2020BN42 4RY: before 2020BN42 4SJ: before 2020BN42 4SL: before 2020BN42 4SN: before 2020BN42 4SP: before 2020BN42 4SQ: before 2020BN42 4SR: before 2020BN42 4TA: before 2020BN42 4TB: before 2020BN42 4TE: before 2020BN42 4TF: before 2020BN42 4TG: before 2020BN42 4TH: before 2020BN42 4TJ: before 2020BN42 4TL: before 2020BN42 4TN: before 2020BN42 4TP: before 2020BN42 4TQ: before 2020BN42 4TR: before 2020BN42 4TS: before 2020BN42 4TT: before 2020BN42 4TU: before 2020BN42 4TW: before 2020BN42 4TX: before 2020BN42 4TY: before 2020BN42 4TZ: before 2020BN42 4WA: before 2020BN42 4WB: before 2020BN42 4WD: before 2020BN42 4WE: before 2020BN42 4WF: before 2020BN42 4WG: before 2020BN42 4WH: before 2020BN42 4WJ: before 2020BN42 4WL: before 2020BN42 4WN: before 2020BN42 4WP: before 2020BN42 4WQ: before 2020BN42 4YA: before 2020BN42 4YB: before 2020BN42 4YD: before 2020BN42 4YE: before 2020BN42 4YF: before 2020BN42 4YG: before 2020BN42 4YH: before 2020BN42 4YJ: before 2020BN42 4YL: before 2020BN42 4YN: before 2020BN42 4YP: before 2020BN42 4YQ: before 2020BN42 4AX: new since 2020BN42 4BR: new since 2020BN42 4BX: new since 2020BN42 4BY: new since 2020BN42 4BZ: new since 2020 Southwick Map of every postcode in the BN42 4 sector, by new since 2020 Of the 219 postcodes in the BN42 4 sector that ONS places, 5 are new since 2020 and 214 were in use before 2020. One postcode lies beyond the edge and is listed under the map. Places named: Southwick. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. Southwick
  • New since 2020: 5
  • In use before 2020: 214

Of the 219 postcodes in the BN42 4 sector that ONS places, 5 are new since 2020 and 214 were in use before 2020.

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. New since 2020 means it came into use in January 2020 or later. 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; when each came into use: the same directory; 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 5 newest postcodes

BN42 4BRMay 2025BN42 4BZMay 2025BN42 4AXJanuary 2025BN42 4BYApril 2023BN42 4BXNovember 2022

Further out, not drawn

This postcode lies well apart from the rest, so the map is drawn without it to show the rest closer; it is in every count.

BN42 4XZ

What do homes sell for in BN42 4?

Homes in BN42 4 sold for a typical £450,000 in the 12 months to August 2026, across 107 sales, up 5.9% on the 12 months before, HM Land Registry's figures show.

£450,000 typical price, the 12 months to August 2026
£425,000 12 months to August 2025
▲ up 5.9% on the 12 months before
  • Detached £480,500 22 sales
  • Semi-detached £475,000 53 sales
  • Terraced £425,000 23 sales
  • Flat or maisonette £270,000 9 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 BN42 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 BN42 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.

BN42 4AABN42 4ABBN42 4ADBN42 4AEBN42 4AFBN42 4AGBN42 4AJBN42 4ALBN42 4ANBN42 4APBN42 4AQBN42 4ARBN42 4ASBN42 4ATBN42 4AUBN42 4AWBN42 4AXBN42 4AYBN42 4AZBN42 4BABN42 4BBBN42 4BFBN42 4BRBN42 4BSBN42 4BTBN42 4BUBN42 4BWBN42 4BXBN42 4BYBN42 4BZBN42 4DABN42 4DBBN42 4DDBN42 4DEBN42 4DFBN42 4DGBN42 4DHBN42 4DJBN42 4DLBN42 4DNBN42 4DPBN42 4DQBN42 4DRBN42 4DSBN42 4DTBN42 4DUBN42 4DWBN42 4DXBN42 4DYBN42 4DZBN42 4EDBN42 4EGBN42 4ENBN42 4EPBN42 4FBBN42 4FJBN42 4FLBN42 4FNBN42 4FPBN42 4FQBN42 4FRBN42 4FSBN42 4FTBN42 4FUBN42 4FWBN42 4FXBN42 4FYBN42 4FZBN42 4GABN42 4GBBN42 4GDBN42 4GEBN42 4GFBN42 4GGBN42 4GHBN42 4GJBN42 4GRBN42 4GSBN42 4HABN42 4HBBN42 4HDBN42 4HEBN42 4HFBN42 4HGBN42 4HHBN42 4HJBN42 4HLBN42 4HNBN42 4HPBN42 4HQBN42 4HRBN42 4HSBN42 4HTBN42 4HUBN42 4HWBN42 4JDBN42 4LABN42 4LBBN42 4LDBN42 4LEBN42 4LFBN42 4LGBN42 4LHBN42 4LJBN42 4LLBN42 4LNBN42 4LPBN42 4LQBN42 4LRBN42 4LSBN42 4LTBN42 4NABN42 4NBBN42 4NDBN42 4NEBN42 4NFBN42 4NGBN42 4NHBN42 4NJBN42 4NLBN42 4NNBN42 4NPBN42 4NQBN42 4NRBN42 4NSBN42 4NTBN42 4NUBN42 4NWBN42 4NXBN42 4NYBN42 4PQBN42 4PRBN42 4PSBN42 4PTBN42 4PUBN42 4QBBN42 4QDBN42 4QEBN42 4QFBN42 4QGBN42 4QHBN42 4QJBN42 4QLBN42 4QNBN42 4QPBN42 4QQBN42 4QRBN42 4QSBN42 4QTBN42 4QUBN42 4QWBN42 4RBBN42 4RDBN42 4REBN42 4RFBN42 4RGBN42 4RHBN42 4RJBN42 4RLBN42 4RNBN42 4RPBN42 4RQBN42 4RRBN42 4RSBN42 4RTBN42 4RUBN42 4RWBN42 4RXBN42 4RYBN42 4SJBN42 4SLBN42 4SNBN42 4SPBN42 4SQBN42 4SRBN42 4TABN42 4TBBN42 4TEBN42 4TFBN42 4TGBN42 4THBN42 4TJBN42 4TLBN42 4TNBN42 4TPBN42 4TQBN42 4TRBN42 4TSBN42 4TTBN42 4TUBN42 4TWBN42 4TXBN42 4TYBN42 4TZBN42 4WABN42 4WBBN42 4WDBN42 4WEBN42 4WFBN42 4WGBN42 4WHBN42 4WJBN42 4WLBN42 4WNBN42 4WPBN42 4WQBN42 4XZBN42 4YABN42 4YBBN42 4YDBN42 4YEBN42 4YFBN42 4YGBN42 4YHBN42 4YJBN42 4YLBN42 4YNBN42 4YPBN42 4YQ

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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