SO18 6 postcode sector in the SO18 district

SO18 6 is a sector of the SO18 district: every postcode that starts SO18 6. It has 75 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 SO18 6 sector, by flood risk

Map of every postcode in the SO18 6 sector, by flood risk Of the 75 postcodes in the SO18 6 sector that ONS places, 75 are not on the Environment Agency's at-risk list. Places named: Harefield. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A3024 SO18 6AA: not on the flood risk listSO18 6AB: not on the flood risk listSO18 6AD: not on the flood risk listSO18 6AE: not on the flood risk listSO18 6AF: not on the flood risk listSO18 6AG: not on the flood risk listSO18 6AH: not on the flood risk listSO18 6AJ: not on the flood risk listSO18 6AL: not on the flood risk listSO18 6AN: not on the flood risk listSO18 6AP: not on the flood risk listSO18 6AQ: not on the flood risk listSO18 6AR: not on the flood risk listSO18 6AS: not on the flood risk listSO18 6AT: not on the flood risk listSO18 6AU: not on the flood risk listSO18 6AW: not on the flood risk listSO18 6AX: not on the flood risk listSO18 6AY: not on the flood risk listSO18 6AZ: not on the flood risk listSO18 6BA: not on the flood risk listSO18 6BB: not on the flood risk listSO18 6BD: not on the flood risk listSO18 6BE: not on the flood risk listSO18 6BF: not on the flood risk listSO18 6BG: not on the flood risk listSO18 6BH: not on the flood risk listSO18 6BJ: not on the flood risk listSO18 6BL: not on the flood risk listSO18 6BN: not on the flood risk listSO18 6BP: not on the flood risk listSO18 6BR: not on the flood risk listSO18 6BT: not on the flood risk listSO18 6BW: not on the flood risk listSO18 6BX: not on the flood risk listSO18 6LW: not on the flood risk listSO18 6LX: not on the flood risk listSO18 6LY: not on the flood risk listSO18 6NJ: not on the flood risk listSO18 6NL: not on the flood risk listSO18 6NN: not on the flood risk listSO18 6NP: not on the flood risk listSO18 6NQ: not on the flood risk listSO18 6NR: not on the flood risk listSO18 6NS: not on the flood risk listSO18 6NT: not on the flood risk listSO18 6NU: not on the flood risk listSO18 6NW: not on the flood risk listSO18 6NX: not on the flood risk listSO18 6NY: not on the flood risk listSO18 6PA: not on the flood risk listSO18 6PH: not on the flood risk listSO18 6PJ: not on the flood risk listSO18 6PL: not on the flood risk listSO18 6PN: not on the flood risk listSO18 6PP: not on the flood risk listSO18 6QN: not on the flood risk listSO18 6RU: not on the flood risk listSO18 6RW: not on the flood risk listSO18 6RX: not on the flood risk listSO18 6SG: not on the flood risk listSO18 6SL: not on the flood risk listSO18 6SN: not on the flood risk listSO18 6SQ: not on the flood risk listSO18 6ST: not on the flood risk listSO18 6SX: not on the flood risk listSO18 6TA: not on the flood risk listSO18 6TE: not on the flood risk listSO18 6TF: not on the flood risk listSO18 6TG: not on the flood risk listSO18 6TJ: not on the flood risk listSO18 6TL: not on the flood risk listSO18 6TN: not on the flood risk listSO18 6TW: not on the flood risk listSO18 6TX: not on the flood risk list Harefield Map of every postcode in the SO18 6 sector, by flood risk Of the 75 postcodes in the SO18 6 sector that ONS places, 75 are not on the Environment Agency's at-risk list. Places named: Harefield. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. Harefield
  • 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: 75

Of the 75 postcodes in the SO18 6 sector that ONS places, 75 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 6?

Homes in SO18 6 sold for a typical £230,000 in the 12 months to August 2026, across 37 sales, down 11.5% on the 12 months before, HM Land Registry's figures show.

£230,000 typical price, the 12 months to August 2026
£260,000 12 months to August 2025
▼ down 11.5% on the 12 months before
  • Detached £395,000 10 sales
  • Semi-detached £325,000 8 sales
  • Flat or maisonette £137,000 19 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 6. 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 6

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 6AASO18 6ABSO18 6ADSO18 6AESO18 6AFSO18 6AGSO18 6AHSO18 6AJSO18 6ALSO18 6ANSO18 6APSO18 6AQSO18 6ARSO18 6ASSO18 6ATSO18 6AUSO18 6AWSO18 6AXSO18 6AYSO18 6AZSO18 6BASO18 6BBSO18 6BDSO18 6BESO18 6BFSO18 6BGSO18 6BHSO18 6BJSO18 6BLSO18 6BNSO18 6BPSO18 6BRSO18 6BTSO18 6BWSO18 6BXSO18 6LWSO18 6LXSO18 6LYSO18 6NJSO18 6NLSO18 6NNSO18 6NPSO18 6NQSO18 6NRSO18 6NSSO18 6NTSO18 6NUSO18 6NWSO18 6NXSO18 6NYSO18 6PASO18 6PHSO18 6PJSO18 6PLSO18 6PNSO18 6PPSO18 6QNSO18 6RUSO18 6RWSO18 6RXSO18 6SGSO18 6SLSO18 6SNSO18 6SQSO18 6STSO18 6SXSO18 6TASO18 6TESO18 6TFSO18 6TGSO18 6TJSO18 6TLSO18 6TNSO18 6TWSO18 6TX

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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