SO40 9 postcode sector in the SO40 district

SO40 9 is a sector of the SO40 district: every postcode that starts SO40 9. It has 168 postcodes in use, 3 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 9 sector, by flood risk

Map of every postcode in the SO40 9 sector, by flood risk Of the 168 postcodes in the SO40 9 sector that ONS places, 12 have a home or business at high risk, 2 are at medium risk at worst, 10 are at low risk at worst, 6 are at very low risk only and 138 are not on the Environment Agency's at-risk list. One group of postcodes at high or medium risk is outlined: 11 postcodes at high or medium risk. Places named: Totton South, Marchwood & Eling. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A336 SO40 9AA: not on the flood risk listSO40 9AB: not on the flood risk listSO40 9AD: not on the flood risk listSO40 9AE: not on the flood risk listSO40 9AF: not on the flood risk listSO40 9AG: not on the flood risk listSO40 9AH: not on the flood risk listSO40 9AJ: not on the flood risk listSO40 9AL: not on the flood risk listSO40 9AN: not on the flood risk listSO40 9AP: not on the flood risk listSO40 9AQ: not on the flood risk listSO40 9AR: not on the flood risk listSO40 9AT: not on the flood risk listSO40 9AU: not on the flood risk listSO40 9AW: not on the flood risk listSO40 9AX: not on the flood risk listSO40 9AY: not on the flood risk listSO40 9AZ: not on the flood risk listSO40 9BA: not on the flood risk listSO40 9BB: not on the flood risk listSO40 9BD: not on the flood risk listSO40 9BE: not on the flood risk listSO40 9BG: not on the flood risk listSO40 9BH: not on the flood risk listSO40 9BL: not on the flood risk listSO40 9BQ: not on the flood risk listSO40 9BR: not on the flood risk listSO40 9BS: not on the flood risk listSO40 9BU: not on the flood risk listSO40 9BW: not on the flood risk listSO40 9BX: not on the flood risk listSO40 9BY: not on the flood risk listSO40 9BZ: not on the flood risk listSO40 9DA: not on the flood risk listSO40 9DB: not on the flood risk listSO40 9DD: not on the flood risk listSO40 9DE: not on the flood risk listSO40 9DF: not on the flood risk listSO40 9DG: not on the flood risk listSO40 9DH: not on the flood risk listSO40 9DJ: not on the flood risk listSO40 9DL: not on the flood risk listSO40 9DN: not on the flood risk listSO40 9DP: not on the flood risk listSO40 9DQ: not on the flood risk listSO40 9DR: not on the flood risk listSO40 9DU: not on the flood risk listSO40 9DZ: not on the flood risk listSO40 9ED: not on the flood risk listSO40 9EE: not on the flood risk listSO40 9EF: not on the flood risk listSO40 9EG: not on the flood risk listSO40 9EH: not on the flood risk listSO40 9EJ: not on the flood risk listSO40 9EL: not on the flood risk listSO40 9EN: not on the flood risk listSO40 9EP: not on the flood risk listSO40 9EQ: not on the flood risk listSO40 9ER: not on the flood risk listSO40 9ES: not on the flood risk listSO40 9ET: not on the flood risk listSO40 9EU: not on the flood risk listSO40 9EW: not on the flood risk listSO40 9EX: not on the flood risk listSO40 9EY: not on the flood risk listSO40 9EZ: not on the flood risk listSO40 9FB: not on the flood risk listSO40 9FD: not on the flood risk listSO40 9FE: not on the flood risk listSO40 9FF: not on the flood risk listSO40 9FG: not on the flood risk listSO40 9FH: not on the flood risk listSO40 9FJ: not on the flood risk listSO40 9FL: not on the flood risk listSO40 9FN: not on the flood risk listSO40 9FP: not on the flood risk listSO40 9FQ: not on the flood risk listSO40 9FR: not on the flood risk listSO40 9FS: not on the flood risk listSO40 9FT: not on the flood risk listSO40 9FW: not on the flood risk listSO40 9FX: not on the flood risk listSO40 9FY: not on the flood risk listSO40 9FZ: not on the flood risk listSO40 9GA: not on the flood risk listSO40 9GB: not on the flood risk listSO40 9GE: not on the flood risk listSO40 9GF: not on the flood risk listSO40 9GR: not on the flood risk listSO40 9GY: not on the flood risk listSO40 9GZ: not on the flood risk listSO40 9HA: not on the flood risk listSO40 9HE: not on the flood risk listSO40 9HG: not on the flood risk listSO40 9HH: not on the flood risk listSO40 9HJ: not on the flood risk listSO40 9HL: not on the flood risk listSO40 9HN: not on the flood risk listSO40 9HP: not on the flood risk listSO40 9HQ: not on the flood risk listSO40 9HR: not on the flood risk listSO40 9HS: not on the flood risk listSO40 9HT: not on the flood risk listSO40 9HU: not on the flood risk listSO40 9HW: not on the flood risk listSO40 9HX: not on the flood risk listSO40 9HY: not on the flood risk listSO40 9HZ: not on the flood risk listSO40 9JA: not on the flood risk listSO40 9JB: not on the flood risk listSO40 9JD: not on the flood risk listSO40 9JE: not on the flood risk listSO40 9JF: not on the flood risk listSO40 9JG: not on the flood risk listSO40 9JH: not on the flood risk listSO40 9JJ: not on the flood risk listSO40 9JL: not on the flood risk listSO40 9JP: not on the flood risk listSO40 9JQ: not on the flood risk listSO40 9JR: not on the flood risk listSO40 9JU: not on the flood risk listSO40 9LA: not on the flood risk listSO40 9LJ: not on the flood risk listSO40 9LR: not on the flood risk listSO40 9LT: not on the flood risk listSO40 9LU: not on the flood risk listSO40 9LX: not on the flood risk listSO40 9LY: not on the flood risk listSO40 9LZ: not on the flood risk listSO40 9NA: not on the flood risk listSO40 9ND: not on the flood risk listSO40 9NE: not on the flood risk listSO40 9NF: not on the flood risk listSO40 9PL: not on the flood risk listSO40 9PN: not on the flood risk listSO40 9TQ: not on the flood risk listSO40 9UZ: not on the flood risk listSO40 9BJ: very low flood risk onlySO40 9BP: very low flood risk onlySO40 9DS: very low flood risk onlySO40 9DW: very low flood risk onlySO40 9DX: very low flood risk onlySO40 9GU: very low flood risk onlySO40 9AS: low flood risk at worstSO40 9BT: low flood risk at worstSO40 9DT: low flood risk at worstSO40 9DY: low flood risk at worstSO40 9EA: low flood risk at worstSO40 9EB: low flood risk at worstSO40 9GL: low flood risk at worstSO40 9GP: low flood risk at worstSO40 9GS: low flood risk at worstSO40 9GX: low flood risk at worstSO40 9GG: medium flood risk at worstSO40 9GW: medium flood risk at worstSO40 9BN: high flood riskSO40 9FU: high flood riskSO40 9GD: high flood riskSO40 9GH: high flood riskSO40 9GJ: high flood riskSO40 9GN: high flood riskSO40 9GQ: high flood riskSO40 9GT: high flood riskSO40 9HB: high flood riskSO40 9HD: high flood riskSO40 9HF: high flood riskSO40 9PJ: high flood risk Totton SouthMarchwood & Eling 11 postcodes at high or medium risk, outlined: this goes to SO40 9PJ, the one with most homes and businesses at high risk11 postcodes at high or medium risk Map of every postcode in the SO40 9 sector, by flood risk Of the 168 postcodes in the SO40 9 sector that ONS places, 12 have a home or business at high risk, 2 are at medium risk at worst, 10 are at low risk at worst, 6 are at very low risk only and 138 are not on the Environment Agency's at-risk list. One group of postcodes at high or medium risk is outlined: 11 postcodes at high or medium risk. Places named: Totton South, Marchwood & Eling. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. Totton SouthMarchwood & Eling
  • A home or business at high risk: 12
  • At medium risk at worst: 2
  • At low risk at worst: 10
  • At very low risk only: 6
  • Not on the at-risk list: 138
  • Outline: where 5 or more postcodes at high or medium risk lie together

Of the 168 postcodes in the SO40 9 sector that ONS places, 12 have a home or business at high risk, 2 are at medium risk at worst, 10 are at low risk at worst, 6 are at very low risk only and 138 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. A dashed outline shows where 5 or more lie within 150 metres of each other. It is not a boundary, and 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

The postcodes at high risk

Beside each: how many of its homes and businesses the Environment Agency puts at that risk.

SO40 9PJ11 at high riskSO40 9GH10 at high riskSO40 9GN9 at high riskSO40 9GT6 at high riskSO40 9HB3 at high riskSO40 9HF2 at high riskSO40 9GD2 at high riskSO40 9HD2 at high riskSO40 9BN1 at high riskSO40 9FU1 at high riskSO40 9GJ1 at high riskSO40 9GQ1 at high risk

Where the postcodes at high or medium risk lie together

  • 11 postcodes at high or medium risk, outlined on the map. SO40 9PJ, is the one with most homes and businesses at high risk.

What do homes sell for in SO40 9?

Homes in SO40 9 sold for a typical £319,000 in the 12 months to August 2026, across 64 sales, up 1.3% on the 12 months before, HM Land Registry's figures show.

£319,000 typical price, the 12 months to August 2026
£315,000 12 months to August 2025
▲ up 1.3% on the 12 months before
  • Detached £465,000 19 sales
  • Semi-detached £307,500 25 sales
  • Terraced £290,000 15 sales
  • Flat or maisonette £185,000 5 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 9. 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 9

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 9AASO40 9ABSO40 9ADSO40 9AESO40 9AFSO40 9AGSO40 9AHSO40 9AJSO40 9ALSO40 9ANSO40 9APSO40 9AQSO40 9ARSO40 9ASSO40 9ATSO40 9AUSO40 9AWSO40 9AXSO40 9AYSO40 9AZSO40 9BASO40 9BBSO40 9BDSO40 9BESO40 9BGSO40 9BHSO40 9BJSO40 9BLSO40 9BNSO40 9BPSO40 9BQSO40 9BRSO40 9BSSO40 9BTSO40 9BUSO40 9BWSO40 9BXSO40 9BYSO40 9BZSO40 9DASO40 9DBSO40 9DDSO40 9DESO40 9DFSO40 9DGSO40 9DHSO40 9DJSO40 9DLSO40 9DNSO40 9DPSO40 9DQSO40 9DRSO40 9DSSO40 9DTSO40 9DUSO40 9DWSO40 9DXSO40 9DYSO40 9DZSO40 9EASO40 9EBSO40 9EDSO40 9EESO40 9EFSO40 9EGSO40 9EHSO40 9EJSO40 9ELSO40 9ENSO40 9EPSO40 9EQSO40 9ERSO40 9ESSO40 9ETSO40 9EUSO40 9EWSO40 9EXSO40 9EYSO40 9EZSO40 9FBSO40 9FDSO40 9FESO40 9FFSO40 9FGSO40 9FHSO40 9FJSO40 9FLSO40 9FNSO40 9FPSO40 9FQSO40 9FRSO40 9FSSO40 9FTSO40 9FUSO40 9FWSO40 9FXSO40 9FYSO40 9FZSO40 9GASO40 9GBSO40 9GDSO40 9GESO40 9GFSO40 9GGSO40 9GHSO40 9GJSO40 9GLSO40 9GNSO40 9GPSO40 9GQSO40 9GRSO40 9GSSO40 9GTSO40 9GUSO40 9GWSO40 9GXSO40 9GYSO40 9GZSO40 9HASO40 9HBSO40 9HDSO40 9HESO40 9HFSO40 9HGSO40 9HHSO40 9HJSO40 9HLSO40 9HNSO40 9HPSO40 9HQSO40 9HRSO40 9HSSO40 9HTSO40 9HUSO40 9HWSO40 9HXSO40 9HYSO40 9HZSO40 9JASO40 9JBSO40 9JDSO40 9JESO40 9JFSO40 9JGSO40 9JHSO40 9JJSO40 9JLSO40 9JPSO40 9JQSO40 9JRSO40 9JUSO40 9LASO40 9LJSO40 9LRSO40 9LTSO40 9LUSO40 9LXSO40 9LYSO40 9LZSO40 9NASO40 9NDSO40 9NESO40 9NFSO40 9PJSO40 9PLSO40 9PNSO40 9TQSO40 9UZ

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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