SO31 8 postcode sector in the SO31 district

SO31 8 is a sector of the SO31 district: every postcode that starts SO31 8. It has 183 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 SO31 8 sector, by flood risk

Map of every postcode in the SO31 8 sector, by flood risk Of the 183 postcodes in the SO31 8 sector that ONS places, 7 have a home or business at high risk, 1 are at low risk at worst, 1 are at very low risk only and 174 are not on the Environment Agency's at-risk list. Places named: Bursledon. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. M27A3024 SO31 8AB: not on the flood risk listSO31 8AD: not on the flood risk listSO31 8AE: not on the flood risk listSO31 8AF: not on the flood risk listSO31 8AG: not on the flood risk listSO31 8AH: not on the flood risk listSO31 8AJ: not on the flood risk listSO31 8AN: not on the flood risk listSO31 8AP: not on the flood risk listSO31 8AS: not on the flood risk listSO31 8AT: not on the flood risk listSO31 8AU: not on the flood risk listSO31 8AX: not on the flood risk listSO31 8AY: not on the flood risk listSO31 8BB: not on the flood risk listSO31 8BE: not on the flood risk listSO31 8BG: not on the flood risk listSO31 8BH: not on the flood risk listSO31 8BL: not on the flood risk listSO31 8BN: not on the flood risk listSO31 8BP: not on the flood risk listSO31 8BR: not on the flood risk listSO31 8BS: not on the flood risk listSO31 8BT: not on the flood risk listSO31 8BU: not on the flood risk listSO31 8BW: not on the flood risk listSO31 8BX: not on the flood risk listSO31 8BY: not on the flood risk listSO31 8BZ: not on the flood risk listSO31 8DA: not on the flood risk listSO31 8DB: not on the flood risk listSO31 8DD: not on the flood risk listSO31 8DE: not on the flood risk listSO31 8DF: not on the flood risk listSO31 8DG: not on the flood risk listSO31 8DJ: not on the flood risk listSO31 8DL: not on the flood risk listSO31 8DQ: not on the flood risk listSO31 8DR: not on the flood risk listSO31 8DS: not on the flood risk listSO31 8DT: not on the flood risk listSO31 8DU: not on the flood risk listSO31 8DW: not on the flood risk listSO31 8DX: not on the flood risk listSO31 8EA: not on the flood risk listSO31 8EB: not on the flood risk listSO31 8ED: not on the flood risk listSO31 8EH: not on the flood risk listSO31 8EJ: not on the flood risk listSO31 8EL: not on the flood risk listSO31 8EN: not on the flood risk listSO31 8EP: not on the flood risk listSO31 8EQ: not on the flood risk listSO31 8ER: not on the flood risk listSO31 8ES: not on the flood risk listSO31 8ET: not on the flood risk listSO31 8EU: not on the flood risk listSO31 8EW: not on the flood risk listSO31 8EX: not on the flood risk listSO31 8EY: not on the flood risk listSO31 8EZ: not on the flood risk listSO31 8FA: not on the flood risk listSO31 8FB: not on the flood risk listSO31 8FD: not on the flood risk listSO31 8FE: not on the flood risk listSO31 8FF: not on the flood risk listSO31 8FG: not on the flood risk listSO31 8FH: not on the flood risk listSO31 8FJ: not on the flood risk listSO31 8FL: not on the flood risk listSO31 8FP: not on the flood risk listSO31 8FQ: not on the flood risk listSO31 8FR: not on the flood risk listSO31 8FS: not on the flood risk listSO31 8FT: not on the flood risk listSO31 8FU: not on the flood risk listSO31 8FW: not on the flood risk listSO31 8FX: not on the flood risk listSO31 8FY: not on the flood risk listSO31 8FZ: not on the flood risk listSO31 8GA: not on the flood risk listSO31 8GD: not on the flood risk listSO31 8GE: not on the flood risk listSO31 8GF: not on the flood risk listSO31 8GG: not on the flood risk listSO31 8GH: not on the flood risk listSO31 8GJ: not on the flood risk listSO31 8GL: not on the flood risk listSO31 8GN: not on the flood risk listSO31 8GP: not on the flood risk listSO31 8GQ: not on the flood risk listSO31 8GR: not on the flood risk listSO31 8GS: not on the flood risk listSO31 8GT: not on the flood risk listSO31 8GU: not on the flood risk listSO31 8GW: not on the flood risk listSO31 8GX: not on the flood risk listSO31 8GY: not on the flood risk listSO31 8GZ: not on the flood risk listSO31 8HA: not on the flood risk listSO31 8HB: not on the flood risk listSO31 8HD: not on the flood risk listSO31 8HE: not on the flood risk listSO31 8HF: not on the flood risk listSO31 8HH: not on the flood risk listSO31 8HJ: not on the flood risk listSO31 8HL: not on the flood risk listSO31 8HN: not on the flood risk listSO31 8HP: not on the flood risk listSO31 8HS: not on the flood risk listSO31 8HT: not on the flood risk listSO31 8HU: not on the flood risk listSO31 8HW: not on the flood risk listSO31 8HX: not on the flood risk listSO31 8HY: not on the flood risk listSO31 8HZ: not on the flood risk listSO31 8JA: not on the flood risk listSO31 8JB: not on the flood risk listSO31 8JD: not on the flood risk listSO31 8JH: not on the flood risk listSO31 8JQ: not on the flood risk listSO31 8JR: not on the flood risk listSO31 8JS: not on the flood risk listSO31 8JT: not on the flood risk listSO31 8JW: not on the flood risk listSO31 8JX: not on the flood risk listSO31 8JY: not on the flood risk listSO31 8JZ: not on the flood risk listSO31 8LA: not on the flood risk listSO31 8LB: not on the flood risk listSO31 8LD: not on the flood risk listSO31 8LE: not on the flood risk listSO31 8LF: not on the flood risk listSO31 8LG: not on the flood risk listSO31 8LH: not on the flood risk listSO31 8LL: not on the flood risk listSO31 8LN: not on the flood risk listSO31 8LP: not on the flood risk listSO31 8LQ: not on the flood risk listSO31 8LR: not on the flood risk listSO31 8LS: not on the flood risk listSO31 8LT: not on the flood risk listSO31 8LU: not on the flood risk listSO31 8LW: not on the flood risk listSO31 8LX: not on the flood risk listSO31 8LY: not on the flood risk listSO31 8LZ: not on the flood risk listSO31 8NB: not on the flood risk listSO31 8ND: not on the flood risk listSO31 8NE: not on the flood risk listSO31 8NF: not on the flood risk listSO31 8NG: not on the flood risk listSO31 8NH: not on the flood risk listSO31 8NJ: not on the flood risk listSO31 8NQ: not on the flood risk listSO31 8NR: not on the flood risk listSO31 8NS: not on the flood risk listSO31 8NT: not on the flood risk listSO31 8NU: not on the flood risk listSO31 8NW: not on the flood risk listSO31 8NX: not on the flood risk listSO31 8NZ: not on the flood risk listSO31 8PA: not on the flood risk listSO31 8PB: not on the flood risk listSO31 8PD: not on the flood risk listSO31 8PF: not on the flood risk listSO31 8PG: not on the flood risk listSO31 8PH: not on the flood risk listSO31 8PJ: not on the flood risk listSO31 8PL: not on the flood risk listSO31 8PN: not on the flood risk listSO31 8PQ: not on the flood risk listSO31 8JJ: very low flood risk onlySO31 8AA: low flood risk at worstSO31 8AL: high flood riskSO31 8AW: high flood riskSO31 8AZ: high flood riskSO31 8DH: high flood riskSO31 8DN: high flood riskSO31 8FN: high flood riskSO31 8GB: high flood risk Bursledon Map of every postcode in the SO31 8 sector, by flood risk Of the 183 postcodes in the SO31 8 sector that ONS places, 7 have a home or business at high risk, 1 are at low risk at worst, 1 are at very low risk only and 174 are not on the Environment Agency's at-risk list. Places named: Bursledon. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. M27A3024 Bursledon
  • A home or business at high risk: 7
  • At medium risk at worst: 0
  • At low risk at worst: 1
  • At very low risk only: 1
  • Not on the at-risk list: 174

Of the 183 postcodes in the SO31 8 sector that ONS places, 7 have a home or business at high risk, 1 are at low risk at worst, 1 are at very low risk only and 174 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. Where marks overlap, the one first in the key is drawn; the counts include every postcode.

Sources: ONS Postcode Directory, August 2026, loaded 20 October 2026; Environment Agency flood risk, published 6 July 2026; roads, rivers and built-up areas: Ordnance Survey open maps. 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.

The postcodes at high risk

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

SO31 8DH9 at high riskSO31 8AW9 at high riskSO31 8DN7 at high riskSO31 8FN6 at high riskSO31 8AZ5 at high riskSO31 8AL1 at high riskSO31 8GB1 at high risk

What do homes sell for in SO31 8?

Homes in SO31 8 sold for a typical £330,000 in the 12 months to September 2026, across 117 sales, HM Land Registry's figures show. The 12 months before gave £318,000 from 111 sales: not a change larger than chance would explain, given which homes happened to sell.

£330,000 typical price, the 12 months to September 2026
£318,000 12 months to September 2025
  • Detached £462,500 40 sales
  • Semi-detached £317,500 40 sales
  • Terraced £257,000 25 sales
  • Flat or maisonette £234,750 12 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 SO31 8. 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 October 2026.

Postcodes in SO31 8

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.

SO31 8AASO31 8ABSO31 8ADSO31 8AESO31 8AFSO31 8AGSO31 8AHSO31 8AJSO31 8ALSO31 8ANSO31 8APSO31 8ASSO31 8ATSO31 8AUSO31 8AWSO31 8AXSO31 8AYSO31 8AZSO31 8BBSO31 8BESO31 8BGSO31 8BHSO31 8BLSO31 8BNSO31 8BPSO31 8BRSO31 8BSSO31 8BTSO31 8BUSO31 8BWSO31 8BXSO31 8BYSO31 8BZSO31 8DASO31 8DBSO31 8DDSO31 8DESO31 8DFSO31 8DGSO31 8DHSO31 8DJSO31 8DLSO31 8DNSO31 8DQSO31 8DRSO31 8DSSO31 8DTSO31 8DUSO31 8DWSO31 8DXSO31 8EASO31 8EBSO31 8EDSO31 8EHSO31 8EJSO31 8ELSO31 8ENSO31 8EPSO31 8EQSO31 8ERSO31 8ESSO31 8ETSO31 8EUSO31 8EWSO31 8EXSO31 8EYSO31 8EZSO31 8FASO31 8FBSO31 8FDSO31 8FESO31 8FFSO31 8FGSO31 8FHSO31 8FJSO31 8FLSO31 8FNSO31 8FPSO31 8FQSO31 8FRSO31 8FSSO31 8FTSO31 8FUSO31 8FWSO31 8FXSO31 8FYSO31 8FZSO31 8GASO31 8GBSO31 8GDSO31 8GESO31 8GFSO31 8GGSO31 8GHSO31 8GJSO31 8GLSO31 8GNSO31 8GPSO31 8GQSO31 8GRSO31 8GSSO31 8GTSO31 8GUSO31 8GWSO31 8GXSO31 8GYSO31 8GZSO31 8HASO31 8HBSO31 8HDSO31 8HESO31 8HFSO31 8HHSO31 8HJSO31 8HLSO31 8HNSO31 8HPSO31 8HSSO31 8HTSO31 8HUSO31 8HWSO31 8HXSO31 8HYSO31 8HZSO31 8JASO31 8JBSO31 8JDSO31 8JHSO31 8JJSO31 8JQSO31 8JRSO31 8JSSO31 8JTSO31 8JWSO31 8JXSO31 8JYSO31 8JZSO31 8LASO31 8LBSO31 8LDSO31 8LESO31 8LFSO31 8LGSO31 8LHSO31 8LLSO31 8LNSO31 8LPSO31 8LQSO31 8LRSO31 8LSSO31 8LTSO31 8LUSO31 8LWSO31 8LXSO31 8LYSO31 8LZSO31 8NBSO31 8NDSO31 8NESO31 8NFSO31 8NGSO31 8NHSO31 8NJSO31 8NQSO31 8NRSO31 8NSSO31 8NTSO31 8NUSO31 8NWSO31 8NXSO31 8NYSO31 8NZSO31 8PASO31 8PBSO31 8PDSO31 8PESO31 8PFSO31 8PGSO31 8PHSO31 8PJSO31 8PLSO31 8PNSO31 8PQ

Source: ONS Postcode Directory, August 2026, loaded 20 October 2026. Postcodes that have ended are not listed.

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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Where the facts on this page come from

Contains public sector information licensed under the Open Government Licence v3.0. Contains HM Land Registry data © Crown copyright and database right 2021. This data is licensed under the Open Government Licence v3.0.

Licence: Open Government Licence v3.0.

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