SO18 4 postcode sector in the SO18 district

SO18 4 is a sector of the SO18 district: every postcode that starts SO18 4. It has 109 postcodes in use.

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

Every postcode in the SO18 4 sector, and which are new since 2020

Map of every postcode in the SO18 4 sector, by new since 2020 Of the 109 postcodes in the SO18 4 sector that ONS places, 109 were in use before 2020. Places named: Harefield, Bitterne Park. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A3024 SO18 4AR: before 2020SO18 4AS: before 2020SO18 4EE: before 2020SO18 4EF: before 2020SO18 4EG: before 2020SO18 4EH: before 2020SO18 4EJ: before 2020SO18 4EL: before 2020SO18 4EN: before 2020SO18 4EP: before 2020SO18 4EQ: before 2020SO18 4ER: before 2020SO18 4ES: before 2020SO18 4ET: before 2020SO18 4EU: before 2020SO18 4EW: before 2020SO18 4EX: before 2020SO18 4EY: before 2020SO18 4EZ: before 2020SO18 4FB: before 2020SO18 4FD: before 2020SO18 4FE: before 2020SO18 4FF: before 2020SO18 4FG: before 2020SO18 4FH: before 2020SO18 4FJ: before 2020SO18 4FL: before 2020SO18 4FN: before 2020SO18 4FP: before 2020SO18 4FQ: before 2020SO18 4FR: before 2020SO18 4GP: before 2020SO18 4GU: before 2020SO18 4GW: before 2020SO18 4GX: before 2020SO18 4GY: before 2020SO18 4GZ: before 2020SO18 4HA: before 2020SO18 4HB: before 2020SO18 4HD: before 2020SO18 4HE: before 2020SO18 4HF: before 2020SO18 4HH: before 2020SO18 4HP: before 2020SO18 4HQ: before 2020SO18 4HR: before 2020SO18 4HS: before 2020SO18 4HT: before 2020SO18 4HU: before 2020SO18 4HW: before 2020SO18 4HX: before 2020SO18 4HY: before 2020SO18 4JR: before 2020SO18 4JU: before 2020SO18 4PP: before 2020SO18 4PQ: before 2020SO18 4PR: before 2020SO18 4QA: before 2020SO18 4QD: before 2020SO18 4QE: before 2020SO18 4QF: before 2020SO18 4QG: before 2020SO18 4QH: before 2020SO18 4QJ: before 2020SO18 4QL: before 2020SO18 4QN: before 2020SO18 4RA: before 2020SO18 4RF: before 2020SO18 4RG: before 2020SO18 4RH: before 2020SO18 4RJ: before 2020SO18 4RL: before 2020SO18 4RN: before 2020SO18 4RP: before 2020SO18 4RQ: before 2020SO18 4RR: before 2020SO18 4RS: before 2020SO18 4RT: before 2020SO18 4RU: before 2020SO18 4RW: before 2020SO18 4RX: before 2020SO18 4RY: before 2020SO18 4RZ: before 2020SO18 4SA: before 2020SO18 4SB: before 2020SO18 4SD: before 2020SO18 4SE: before 2020SO18 4SF: before 2020SO18 4SG: before 2020SO18 4SH: before 2020SO18 4SJ: before 2020SO18 4SL: before 2020SO18 4SN: before 2020SO18 4SP: before 2020SO18 4SQ: before 2020SO18 4SR: before 2020SO18 4SS: before 2020SO18 4ST: before 2020SO18 4SU: before 2020SO18 4SW: before 2020SO18 4SX: before 2020SO18 4SY: before 2020SO18 4SZ: before 2020SO18 4TA: before 2020SO18 4TB: before 2020SO18 4TD: before 2020SO18 4TQ: before 2020SO18 4TS: before 2020SO18 4UF: before 2020 HarefieldBitterne Park Map of every postcode in the SO18 4 sector, by new since 2020 Of the 109 postcodes in the SO18 4 sector that ONS places, 109 were in use before 2020. Places named: Harefield, Bitterne Park. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. HarefieldBitterne Park
  • New since 2020: 0
  • In use before 2020: 109

Of the 109 postcodes in the SO18 4 sector that ONS places, 109 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. Names in italics are council wards: we hold no town or village names here.

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

What do homes sell for in SO18 4?

Homes in SO18 4 sold for a typical £270,000 in the 12 months to August 2026, across 51 sales, down 3.6% on the 12 months before, HM Land Registry's figures show.

£270,000 typical price, the 12 months to August 2026
£280,000 12 months to August 2025
▼ down 3.6% on the 12 months before
  • Detached £377,000 16 sales
  • Semi-detached £285,000 13 sales
  • Terraced £256,000 8 sales
  • Flat or maisonette £167,500 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 SO18 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 SO18 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.

SO18 4ARSO18 4ASSO18 4EESO18 4EFSO18 4EGSO18 4EHSO18 4EJSO18 4ELSO18 4ENSO18 4EPSO18 4EQSO18 4ERSO18 4ESSO18 4ETSO18 4EUSO18 4EWSO18 4EXSO18 4EYSO18 4EZSO18 4FBSO18 4FDSO18 4FESO18 4FFSO18 4FGSO18 4FHSO18 4FJSO18 4FLSO18 4FNSO18 4FPSO18 4FQSO18 4FRSO18 4GPSO18 4GUSO18 4GWSO18 4GXSO18 4GYSO18 4GZSO18 4HASO18 4HBSO18 4HDSO18 4HESO18 4HFSO18 4HHSO18 4HPSO18 4HQSO18 4HRSO18 4HSSO18 4HTSO18 4HUSO18 4HWSO18 4HXSO18 4HYSO18 4JRSO18 4JUSO18 4PPSO18 4PQSO18 4PRSO18 4QASO18 4QDSO18 4QESO18 4QFSO18 4QGSO18 4QHSO18 4QJSO18 4QLSO18 4QNSO18 4RASO18 4RFSO18 4RGSO18 4RHSO18 4RJSO18 4RLSO18 4RNSO18 4RPSO18 4RQSO18 4RRSO18 4RSSO18 4RTSO18 4RUSO18 4RWSO18 4RXSO18 4RYSO18 4RZSO18 4SASO18 4SBSO18 4SDSO18 4SESO18 4SFSO18 4SGSO18 4SHSO18 4SJSO18 4SLSO18 4SNSO18 4SPSO18 4SQSO18 4SRSO18 4SSSO18 4STSO18 4SUSO18 4SWSO18 4SXSO18 4SYSO18 4SZSO18 4TASO18 4TBSO18 4TDSO18 4TQSO18 4TSSO18 4UF

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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