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.

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Every postcode in the SO18 4 sector, by flood risk

Map of every postcode in the SO18 4 sector, by flood risk Of the 109 postcodes in the SO18 4 sector that ONS places, 109 are not on the Environment Agency's at-risk list. 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: not on the flood risk listSO18 4AS: not on the flood risk listSO18 4EE: not on the flood risk listSO18 4EF: not on the flood risk listSO18 4EG: not on the flood risk listSO18 4EH: not on the flood risk listSO18 4EJ: not on the flood risk listSO18 4EL: not on the flood risk listSO18 4EN: not on the flood risk listSO18 4EP: not on the flood risk listSO18 4EQ: not on the flood risk listSO18 4ER: not on the flood risk listSO18 4ES: not on the flood risk listSO18 4ET: not on the flood risk listSO18 4EU: not on the flood risk listSO18 4EW: not on the flood risk listSO18 4EX: not on the flood risk listSO18 4EY: not on the flood risk listSO18 4EZ: not on the flood risk listSO18 4FB: not on the flood risk listSO18 4FD: not on the flood risk listSO18 4FE: not on the flood risk listSO18 4FF: not on the flood risk listSO18 4FG: not on the flood risk listSO18 4FH: not on the flood risk listSO18 4FJ: not on the flood risk listSO18 4FL: not on the flood risk listSO18 4FN: not on the flood risk listSO18 4FP: not on the flood risk listSO18 4FQ: not on the flood risk listSO18 4FR: not on the flood risk listSO18 4GP: not on the flood risk listSO18 4GU: not on the flood risk listSO18 4GW: not on the flood risk listSO18 4GX: not on the flood risk listSO18 4GY: not on the flood risk listSO18 4GZ: not on the flood risk listSO18 4HA: not on the flood risk listSO18 4HB: not on the flood risk listSO18 4HD: not on the flood risk listSO18 4HE: not on the flood risk listSO18 4HF: not on the flood risk listSO18 4HH: not on the flood risk listSO18 4HP: not on the flood risk listSO18 4HQ: not on the flood risk listSO18 4HR: not on the flood risk listSO18 4HS: not on the flood risk listSO18 4HT: not on the flood risk listSO18 4HU: not on the flood risk listSO18 4HW: not on the flood risk listSO18 4HX: not on the flood risk listSO18 4HY: not on the flood risk listSO18 4JR: not on the flood risk listSO18 4JU: not on the flood risk listSO18 4PP: not on the flood risk listSO18 4PQ: not on the flood risk listSO18 4PR: not on the flood risk listSO18 4QA: not on the flood risk listSO18 4QD: not on the flood risk listSO18 4QE: not on the flood risk listSO18 4QF: not on the flood risk listSO18 4QG: not on the flood risk listSO18 4QH: not on the flood risk listSO18 4QJ: not on the flood risk listSO18 4QL: not on the flood risk listSO18 4QN: not on the flood risk listSO18 4RA: not on the flood risk listSO18 4RF: not on the flood risk listSO18 4RG: not on the flood risk listSO18 4RH: not on the flood risk listSO18 4RJ: not on the flood risk listSO18 4RL: not on the flood risk listSO18 4RN: not on the flood risk listSO18 4RP: not on the flood risk listSO18 4RQ: not on the flood risk listSO18 4RR: not on the flood risk listSO18 4RS: not on the flood risk listSO18 4RT: not on the flood risk listSO18 4RU: not on the flood risk listSO18 4RW: not on the flood risk listSO18 4RX: not on the flood risk listSO18 4RY: not on the flood risk listSO18 4RZ: not on the flood risk listSO18 4SA: not on the flood risk listSO18 4SB: not on the flood risk listSO18 4SD: not on the flood risk listSO18 4SE: not on the flood risk listSO18 4SF: not on the flood risk listSO18 4SG: not on the flood risk listSO18 4SH: not on the flood risk listSO18 4SJ: not on the flood risk listSO18 4SL: not on the flood risk listSO18 4SN: not on the flood risk listSO18 4SP: not on the flood risk listSO18 4SQ: not on the flood risk listSO18 4SR: not on the flood risk listSO18 4SS: not on the flood risk listSO18 4ST: not on the flood risk listSO18 4SU: not on the flood risk listSO18 4SW: not on the flood risk listSO18 4SX: not on the flood risk listSO18 4SY: not on the flood risk listSO18 4SZ: not on the flood risk listSO18 4TA: not on the flood risk listSO18 4TB: not on the flood risk listSO18 4TD: not on the flood risk listSO18 4TQ: not on the flood risk listSO18 4TS: not on the flood risk listSO18 4UF: not on the flood risk list HarefieldBitterne Park Map of every postcode in the SO18 4 sector, by flood risk Of the 109 postcodes in the SO18 4 sector that ONS places, 109 are not on the Environment Agency's at-risk list. Places named: Harefield, Bitterne Park. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. HarefieldBitterne Park
  • 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: 109

Of the 109 postcodes in the SO18 4 sector that ONS places, 109 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. 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; 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 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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