SO30 3 postcode sector in the SO30 district

SO30 3 is a sector of the SO30 district: every postcode that starts SO30 3. It has 187 postcodes in use, 4 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 SO30 3 sector, by flood risk

Map of every postcode in the SO30 3 sector, by flood risk Of the 187 postcodes in the SO30 3 sector that ONS places, 1 have a home or business at high risk, 1 are at low risk at worst, 13 are at very low risk only and 172 are not on the Environment Agency's at-risk list. 2 postcodes lie beyond the edge and are listed under the map. Places named: West End. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. M27A334A27 SO30 3AB: not on the flood risk listSO30 3AE: not on the flood risk listSO30 3AF: not on the flood risk listSO30 3AH: not on the flood risk listSO30 3AJ: not on the flood risk listSO30 3AL: not on the flood risk listSO30 3AN: not on the flood risk listSO30 3AP: not on the flood risk listSO30 3AQ: not on the flood risk listSO30 3AR: not on the flood risk listSO30 3AS: not on the flood risk listSO30 3AT: not on the flood risk listSO30 3AU: not on the flood risk listSO30 3AW: not on the flood risk listSO30 3AX: not on the flood risk listSO30 3AY: not on the flood risk listSO30 3AZ: not on the flood risk listSO30 3BA: not on the flood risk listSO30 3BB: not on the flood risk listSO30 3BD: not on the flood risk listSO30 3BE: not on the flood risk listSO30 3BG: not on the flood risk listSO30 3BH: not on the flood risk listSO30 3BJ: not on the flood risk listSO30 3BL: not on the flood risk listSO30 3BN: not on the flood risk listSO30 3BP: not on the flood risk listSO30 3BQ: not on the flood risk listSO30 3BR: not on the flood risk listSO30 3BS: not on the flood risk listSO30 3BT: not on the flood risk listSO30 3BW: not on the flood risk listSO30 3DA: not on the flood risk listSO30 3DF: not on the flood risk listSO30 3DG: not on the flood risk listSO30 3DJ: not on the flood risk listSO30 3DL: not on the flood risk listSO30 3DN: not on the flood risk listSO30 3DP: not on the flood risk listSO30 3DQ: not on the flood risk listSO30 3DR: not on the flood risk listSO30 3DS: not on the flood risk listSO30 3DT: not on the flood risk listSO30 3DU: not on the flood risk listSO30 3DW: not on the flood risk listSO30 3DX: not on the flood risk listSO30 3DY: not on the flood risk listSO30 3DZ: not on the flood risk listSO30 3EA: not on the flood risk listSO30 3EB: not on the flood risk listSO30 3ED: not on the flood risk listSO30 3EE: not on the flood risk listSO30 3EF: not on the flood risk listSO30 3EG: not on the flood risk listSO30 3EH: not on the flood risk listSO30 3EJ: not on the flood risk listSO30 3EL: not on the flood risk listSO30 3EN: not on the flood risk listSO30 3EP: not on the flood risk listSO30 3EQ: not on the flood risk listSO30 3ER: not on the flood risk listSO30 3ES: not on the flood risk listSO30 3ET: not on the flood risk listSO30 3EU: not on the flood risk listSO30 3EW: not on the flood risk listSO30 3EX: not on the flood risk listSO30 3EY: not on the flood risk listSO30 3EZ: not on the flood risk listSO30 3FA: not on the flood risk listSO30 3FB: not on the flood risk listSO30 3FD: not on the flood risk listSO30 3FE: not on the flood risk listSO30 3FF: not on the flood risk listSO30 3FG: not on the flood risk listSO30 3FH: not on the flood risk listSO30 3FJ: not on the flood risk listSO30 3FL: not on the flood risk listSO30 3FN: not on the flood risk listSO30 3FP: not on the flood risk listSO30 3FQ: not on the flood risk listSO30 3FR: not on the flood risk listSO30 3FS: not on the flood risk listSO30 3FT: not on the flood risk listSO30 3FU: not on the flood risk listSO30 3FW: not on the flood risk listSO30 3FX: not on the flood risk listSO30 3FY: not on the flood risk listSO30 3FZ: not on the flood risk listSO30 3GA: not on the flood risk listSO30 3GB: not on the flood risk listSO30 3GD: not on the flood risk listSO30 3GF: not on the flood risk listSO30 3GG: not on the flood risk listSO30 3GH: not on the flood risk listSO30 3GQ: not on the flood risk listSO30 3GR: not on the flood risk listSO30 3GS: not on the flood risk listSO30 3GT: not on the flood risk listSO30 3GU: not on the flood risk listSO30 3GW: not on the flood risk listSO30 3GX: not on the flood risk listSO30 3GY: not on the flood risk listSO30 3HA: not on the flood risk listSO30 3HD: not on the flood risk listSO30 3HE: not on the flood risk listSO30 3HF: not on the flood risk listSO30 3HG: not on the flood risk listSO30 3HH: not on the flood risk listSO30 3HJ: not on the flood risk listSO30 3HL: not on the flood risk listSO30 3HN: not on the flood risk listSO30 3HR: not on the flood risk listSO30 3HS: not on the flood risk listSO30 3HT: not on the flood risk listSO30 3HU: not on the flood risk listSO30 3HW: not on the flood risk listSO30 3HX: not on the flood risk listSO30 3HY: not on the flood risk listSO30 3JA: not on the flood risk listSO30 3JB: not on the flood risk listSO30 3JD: not on the flood risk listSO30 3JG: not on the flood risk listSO30 3JH: not on the flood risk listSO30 3JL: not on the flood risk listSO30 3JN: not on the flood risk listSO30 3JP: not on the flood risk listSO30 3JQ: not on the flood risk listSO30 3JR: not on the flood risk listSO30 3JS: not on the flood risk listSO30 3JT: not on the flood risk listSO30 3JU: not on the flood risk listSO30 3JW: not on the flood risk listSO30 3JX: not on the flood risk listSO30 3JY: not on the flood risk listSO30 3JZ: not on the flood risk listSO30 3LA: not on the flood risk listSO30 3LB: not on the flood risk listSO30 3LD: not on the flood risk listSO30 3LE: not on the flood risk listSO30 3LF: not on the flood risk listSO30 3LG: not on the flood risk listSO30 3LH: not on the flood risk listSO30 3LJ: not on the flood risk listSO30 3LT: not on the flood risk listSO30 3NA: not on the flood risk listSO30 3NB: not on the flood risk listSO30 3ND: not on the flood risk listSO30 3NU: not on the flood risk listSO30 3PJ: not on the flood risk listSO30 3PL: not on the flood risk listSO30 3PY: not on the flood risk listSO30 3RA: not on the flood risk listSO30 3RB: not on the flood risk listSO30 3RD: not on the flood risk listSO30 3RE: not on the flood risk listSO30 3RF: not on the flood risk listSO30 3RG: not on the flood risk listSO30 3RH: not on the flood risk listSO30 3RJ: not on the flood risk listSO30 3RS: not on the flood risk listSO30 3RU: not on the flood risk listSO30 3RW: not on the flood risk listSO30 3RX: not on the flood risk listSO30 3SA: not on the flood risk listSO30 3SE: not on the flood risk listSO30 3SF: not on the flood risk listSO30 3SG: not on the flood risk listSO30 3SZ: not on the flood risk listSO30 3XA: not on the flood risk listSO30 3XH: not on the flood risk listSO30 3XJ: not on the flood risk listSO30 3AA: very low flood risk onlySO30 3AD: very low flood risk onlySO30 3GE: very low flood risk onlySO30 3GJ: very low flood risk onlySO30 3GL: very low flood risk onlySO30 3GN: very low flood risk onlySO30 3GP: very low flood risk onlySO30 3GZ: very low flood risk onlySO30 3HQ: very low flood risk onlySO30 3LS: very low flood risk onlySO30 3NE: very low flood risk onlySO30 3NW: very low flood risk onlySO30 3RN: very low flood risk onlySO30 3AG: low flood risk at worst West End Map of every postcode in the SO30 3 sector, by flood risk Of the 187 postcodes in the SO30 3 sector that ONS places, 1 have a home or business at high risk, 1 are at low risk at worst, 13 are at very low risk only and 172 are not on the Environment Agency's at-risk list. 2 postcodes lie beyond the edge and are listed under the map. Places named: West End. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. West End
  • A home or business at high risk: 1
  • At medium risk at worst: 0
  • At low risk at worst: 1
  • At very low risk only: 13
  • Not on the at-risk list: 172

Of the 187 postcodes in the SO30 3 sector that ONS places, 1 have a home or business at high risk, 1 are at low risk at worst, 13 are at very low risk only and 172 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.

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.

SO30 3HZ1 at high risk

2 further out, not drawn

These postcodes lie well apart from the rest, so the map is drawn without them to show the rest closer; they are in every count.

SO30 3HPSO30 3HZ

What do homes sell for in SO30 3?

Homes in SO30 3 sold for a typical £330,000 in the 12 months to August 2026, across 91 sales, up 1.5% on the 12 months before, HM Land Registry's figures show.

£330,000 typical price, the 12 months to August 2026
£325,000 12 months to August 2025
▲ up 1.5% on the 12 months before
  • Detached £467,500 26 sales
  • Semi-detached £346,250 32 sales
  • Terraced £263,750 12 sales
  • Flat or maisonette £158,500 21 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 SO30 3. 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 SO30 3

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.

SO30 3AASO30 3ABSO30 3ADSO30 3AESO30 3AFSO30 3AGSO30 3AHSO30 3AJSO30 3ALSO30 3ANSO30 3APSO30 3AQSO30 3ARSO30 3ASSO30 3ATSO30 3AUSO30 3AWSO30 3AXSO30 3AYSO30 3AZSO30 3BASO30 3BBSO30 3BDSO30 3BESO30 3BGSO30 3BHSO30 3BJSO30 3BLSO30 3BNSO30 3BPSO30 3BQSO30 3BRSO30 3BSSO30 3BTSO30 3BWSO30 3DASO30 3DFSO30 3DGSO30 3DJSO30 3DLSO30 3DNSO30 3DPSO30 3DQSO30 3DRSO30 3DSSO30 3DTSO30 3DUSO30 3DWSO30 3DXSO30 3DYSO30 3DZSO30 3EASO30 3EBSO30 3EDSO30 3EESO30 3EFSO30 3EGSO30 3EHSO30 3EJSO30 3ELSO30 3ENSO30 3EPSO30 3EQSO30 3ERSO30 3ESSO30 3ETSO30 3EUSO30 3EWSO30 3EXSO30 3EYSO30 3EZSO30 3FASO30 3FBSO30 3FDSO30 3FESO30 3FFSO30 3FGSO30 3FHSO30 3FJSO30 3FLSO30 3FNSO30 3FPSO30 3FQSO30 3FRSO30 3FSSO30 3FTSO30 3FUSO30 3FWSO30 3FXSO30 3FYSO30 3FZSO30 3GASO30 3GBSO30 3GDSO30 3GESO30 3GFSO30 3GGSO30 3GHSO30 3GJSO30 3GLSO30 3GNSO30 3GPSO30 3GQSO30 3GRSO30 3GSSO30 3GTSO30 3GUSO30 3GWSO30 3GXSO30 3GYSO30 3GZSO30 3HASO30 3HDSO30 3HESO30 3HFSO30 3HGSO30 3HHSO30 3HJSO30 3HLSO30 3HNSO30 3HPSO30 3HQSO30 3HRSO30 3HSSO30 3HTSO30 3HUSO30 3HWSO30 3HXSO30 3HYSO30 3HZSO30 3JASO30 3JBSO30 3JDSO30 3JGSO30 3JHSO30 3JLSO30 3JNSO30 3JPSO30 3JQSO30 3JRSO30 3JSSO30 3JTSO30 3JUSO30 3JWSO30 3JXSO30 3JYSO30 3JZSO30 3LASO30 3LBSO30 3LDSO30 3LESO30 3LFSO30 3LGSO30 3LHSO30 3LJSO30 3LSSO30 3LTSO30 3NASO30 3NBSO30 3NDSO30 3NESO30 3NUSO30 3NWSO30 3PJSO30 3PLSO30 3PYSO30 3RASO30 3RBSO30 3RDSO30 3RESO30 3RFSO30 3RGSO30 3RHSO30 3RJSO30 3RNSO30 3RSSO30 3RUSO30 3RWSO30 3RXSO30 3SASO30 3SESO30 3SFSO30 3SGSO30 3SZSO30 3XASO30 3XHSO30 3XJ

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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