SO40 4 postcode sector in the SO40 district

SO40 4 is a sector of the SO40 district: every postcode that starts SO40 4. It has 143 postcodes in use, 2 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 SO40 4 sector, and which are new since 2020

Map of every postcode in the SO40 4 sector, by new since 2020 Of the 143 postcodes in the SO40 4 sector that ONS places, 1 are new since 2020 and 142 were in use before 2020. Places named: Marchwood. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. A326A33A35 SO40 4AA: before 2020SO40 4AB: before 2020SO40 4AD: before 2020SO40 4AE: before 2020SO40 4AF: before 2020SO40 4AG: before 2020SO40 4AH: before 2020SO40 4AJ: before 2020SO40 4AL: before 2020SO40 4AN: before 2020SO40 4AP: before 2020SO40 4AQ: before 2020SO40 4AR: before 2020SO40 4AS: before 2020SO40 4AT: before 2020SO40 4AW: before 2020SO40 4AX: before 2020SO40 4AZ: before 2020SO40 4BD: before 2020SO40 4BE: before 2020SO40 4BJ: before 2020SO40 4BL: before 2020SO40 4BX: before 2020SO40 4BY: before 2020SO40 4DA: before 2020SO40 4JW: before 2020SO40 4JY: before 2020SO40 4JZ: before 2020SO40 4LB: before 2020SO40 4LE: before 2020SO40 4PA: before 2020SO40 4PB: before 2020SO40 4PD: before 2020SO40 4SB: before 2020SO40 4SD: before 2020SO40 4SE: before 2020SO40 4SF: before 2020SO40 4SG: before 2020SO40 4SH: before 2020SO40 4SJ: before 2020SO40 4SL: before 2020SO40 4SN: before 2020SO40 4SQ: before 2020SO40 4SR: before 2020SO40 4SS: before 2020SO40 4ST: before 2020SO40 4SU: before 2020SO40 4SW: before 2020SO40 4SX: before 2020SO40 4TE: before 2020SO40 4TS: before 2020SO40 4TU: before 2020SO40 4TW: before 2020SO40 4UA: before 2020SO40 4UB: before 2020SO40 4UD: before 2020SO40 4UE: before 2020SO40 4UF: before 2020SO40 4UG: before 2020SO40 4UH: before 2020SO40 4UJ: before 2020SO40 4UL: before 2020SO40 4UN: before 2020SO40 4UP: before 2020SO40 4UQ: before 2020SO40 4UR: before 2020SO40 4US: before 2020SO40 4UT: before 2020SO40 4UU: before 2020SO40 4UW: before 2020SO40 4UX: before 2020SO40 4UY: before 2020SO40 4UZ: before 2020SO40 4WA: before 2020SO40 4WB: before 2020SO40 4WD: before 2020SO40 4WE: before 2020SO40 4WF: before 2020SO40 4WG: before 2020SO40 4WH: before 2020SO40 4WJ: before 2020SO40 4WL: before 2020SO40 4WN: before 2020SO40 4WP: before 2020SO40 4WQ: before 2020SO40 4WR: before 2020SO40 4WS: before 2020SO40 4WT: before 2020SO40 4WU: before 2020SO40 4WW: before 2020SO40 4WX: before 2020SO40 4WY: before 2020SO40 4WZ: before 2020SO40 4XA: before 2020SO40 4XB: before 2020SO40 4XD: before 2020SO40 4XE: before 2020SO40 4XF: before 2020SO40 4XG: before 2020SO40 4XH: before 2020SO40 4XJ: before 2020SO40 4XL: before 2020SO40 4XN: before 2020SO40 4XQ: before 2020SO40 4XR: before 2020SO40 4XS: before 2020SO40 4XT: before 2020SO40 4XU: before 2020SO40 4XW: before 2020SO40 4XX: before 2020SO40 4XY: before 2020SO40 4XZ: before 2020SO40 4YA: before 2020SO40 4YB: before 2020SO40 4YD: before 2020SO40 4YE: before 2020SO40 4YF: before 2020SO40 4YG: before 2020SO40 4YH: before 2020SO40 4YJ: before 2020SO40 4YL: before 2020SO40 4YN: before 2020SO40 4YP: before 2020SO40 4YQ: before 2020SO40 4YR: before 2020SO40 4YS: before 2020SO40 4YT: before 2020SO40 4YU: before 2020SO40 4YW: before 2020SO40 4YX: before 2020SO40 4YY: before 2020SO40 4YZ: before 2020SO40 4ZD: before 2020SO40 4ZE: before 2020SO40 4ZG: before 2020SO40 4ZH: before 2020SO40 4AY: before 2020SO40 4JU: before 2020SO40 4BF: new since 2020 Marchwood Map of every postcode in the SO40 4 sector, by new since 2020 Of the 143 postcodes in the SO40 4 sector that ONS places, 1 are new since 2020 and 142 were in use before 2020. Places named: Marchwood. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. A33 Marchwood
  • New since 2020: 1
  • In use before 2020: 142

Of the 143 postcodes in the SO40 4 sector that ONS places, 1 are new since 2020 and 142 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 newest postcode

SO40 4BFAugust 2023

What do homes sell for in SO40 4?

Homes in SO40 4 sold for a typical £322,000 in the 12 months to August 2026, across 60 sales, down 4.6% on the 12 months before, HM Land Registry's figures show.

£322,000 typical price, the 12 months to August 2026
£337,500 12 months to August 2025
▼ down 4.6% on the 12 months before
  • Detached £465,000 17 sales
  • Semi-detached £365,000 11 sales
  • Terraced £302,500 18 sales
  • Flat or maisonette £171,475 14 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 SO40 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 SO40 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.

SO40 4AASO40 4ABSO40 4ADSO40 4AESO40 4AFSO40 4AGSO40 4AHSO40 4AJSO40 4ALSO40 4ANSO40 4APSO40 4AQSO40 4ARSO40 4ASSO40 4ATSO40 4AUSO40 4AWSO40 4AXSO40 4AYSO40 4AZSO40 4BDSO40 4BESO40 4BFSO40 4BJSO40 4BLSO40 4BXSO40 4BYSO40 4DASO40 4JUSO40 4JWSO40 4JXSO40 4JYSO40 4JZSO40 4LBSO40 4LESO40 4PASO40 4PBSO40 4PDSO40 4SBSO40 4SDSO40 4SESO40 4SFSO40 4SGSO40 4SHSO40 4SJSO40 4SLSO40 4SNSO40 4SQSO40 4SRSO40 4SSSO40 4STSO40 4SUSO40 4SWSO40 4SXSO40 4SYSO40 4TESO40 4TSSO40 4TUSO40 4TWSO40 4UASO40 4UBSO40 4UDSO40 4UESO40 4UFSO40 4UGSO40 4UHSO40 4UJSO40 4ULSO40 4UNSO40 4UPSO40 4UQSO40 4URSO40 4USSO40 4UTSO40 4UUSO40 4UWSO40 4UXSO40 4UYSO40 4UZSO40 4WASO40 4WBSO40 4WDSO40 4WESO40 4WFSO40 4WGSO40 4WHSO40 4WJSO40 4WLSO40 4WNSO40 4WPSO40 4WQSO40 4WRSO40 4WSSO40 4WTSO40 4WUSO40 4WWSO40 4WXSO40 4WYSO40 4WZSO40 4XASO40 4XBSO40 4XDSO40 4XESO40 4XFSO40 4XGSO40 4XHSO40 4XJSO40 4XLSO40 4XNSO40 4XPSO40 4XQSO40 4XRSO40 4XSSO40 4XTSO40 4XUSO40 4XWSO40 4XXSO40 4XYSO40 4XZSO40 4YASO40 4YBSO40 4YDSO40 4YESO40 4YFSO40 4YGSO40 4YHSO40 4YJSO40 4YLSO40 4YNSO40 4YPSO40 4YQSO40 4YRSO40 4YSSO40 4YTSO40 4YUSO40 4YWSO40 4YXSO40 4YYSO40 4YZSO40 4ZDSO40 4ZESO40 4ZGSO40 4ZH

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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