SO16 4 postcode sector in the SO16 district

SO16 4 is a sector of the SO16 district: every postcode that starts SO16 4. It has 205 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 SO16 4 sector, by flood risk

Map of every postcode in the SO16 4 sector, by flood risk Of the 205 postcodes in the SO16 4 sector that ONS places, 4 have a home or business at high risk, 4 are at medium risk at worst, 2 are at low risk at worst and 195 are not on the Environment Agency's at-risk list. Places named: Millbrook. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A35 SO16 4AA: not on the flood risk listSO16 4AB: not on the flood risk listSO16 4AD: not on the flood risk listSO16 4AE: not on the flood risk listSO16 4AF: not on the flood risk listSO16 4AG: not on the flood risk listSO16 4AH: not on the flood risk listSO16 4AJ: not on the flood risk listSO16 4AL: not on the flood risk listSO16 4AN: not on the flood risk listSO16 4AP: not on the flood risk listSO16 4AQ: not on the flood risk listSO16 4AR: not on the flood risk listSO16 4AS: not on the flood risk listSO16 4AT: not on the flood risk listSO16 4AU: not on the flood risk listSO16 4AW: not on the flood risk listSO16 4AX: not on the flood risk listSO16 4AY: not on the flood risk listSO16 4AZ: not on the flood risk listSO16 4BA: not on the flood risk listSO16 4BB: not on the flood risk listSO16 4BD: not on the flood risk listSO16 4BE: not on the flood risk listSO16 4BF: not on the flood risk listSO16 4BG: not on the flood risk listSO16 4BH: not on the flood risk listSO16 4BJ: not on the flood risk listSO16 4BL: not on the flood risk listSO16 4BN: not on the flood risk listSO16 4BP: not on the flood risk listSO16 4BQ: not on the flood risk listSO16 4BS: not on the flood risk listSO16 4BT: not on the flood risk listSO16 4BU: not on the flood risk listSO16 4BW: not on the flood risk listSO16 4BX: not on the flood risk listSO16 4BY: not on the flood risk listSO16 4BZ: not on the flood risk listSO16 4DA: not on the flood risk listSO16 4DB: not on the flood risk listSO16 4DD: not on the flood risk listSO16 4DE: not on the flood risk listSO16 4DF: not on the flood risk listSO16 4DG: not on the flood risk listSO16 4DH: not on the flood risk listSO16 4DJ: not on the flood risk listSO16 4DL: not on the flood risk listSO16 4DN: not on the flood risk listSO16 4DR: not on the flood risk listSO16 4DU: not on the flood risk listSO16 4DY: not on the flood risk listSO16 4DZ: not on the flood risk listSO16 4EA: not on the flood risk listSO16 4EB: not on the flood risk listSO16 4ED: not on the flood risk listSO16 4EE: not on the flood risk listSO16 4EF: not on the flood risk listSO16 4EG: not on the flood risk listSO16 4EH: not on the flood risk listSO16 4EJ: not on the flood risk listSO16 4EL: not on the flood risk listSO16 4EN: not on the flood risk listSO16 4EP: not on the flood risk listSO16 4EQ: not on the flood risk listSO16 4ER: not on the flood risk listSO16 4ES: not on the flood risk listSO16 4ET: not on the flood risk listSO16 4EU: not on the flood risk listSO16 4EW: not on the flood risk listSO16 4EX: not on the flood risk listSO16 4EY: not on the flood risk listSO16 4EZ: not on the flood risk listSO16 4FA: not on the flood risk listSO16 4FB: not on the flood risk listSO16 4FD: not on the flood risk listSO16 4FE: not on the flood risk listSO16 4FG: not on the flood risk listSO16 4FH: not on the flood risk listSO16 4FL: not on the flood risk listSO16 4FN: not on the flood risk listSO16 4FP: not on the flood risk listSO16 4FQ: not on the flood risk listSO16 4FR: not on the flood risk listSO16 4FS: not on the flood risk listSO16 4FT: not on the flood risk listSO16 4FU: not on the flood risk listSO16 4FW: not on the flood risk listSO16 4FX: not on the flood risk listSO16 4FY: not on the flood risk listSO16 4FZ: not on the flood risk listSO16 4GA: not on the flood risk listSO16 4GB: not on the flood risk listSO16 4GD: not on the flood risk listSO16 4GE: not on the flood risk listSO16 4GF: not on the flood risk listSO16 4GG: not on the flood risk listSO16 4GH: not on the flood risk listSO16 4GJ: not on the flood risk listSO16 4GL: not on the flood risk listSO16 4GN: not on the flood risk listSO16 4GP: not on the flood risk listSO16 4GS: not on the flood risk listSO16 4GW: not on the flood risk listSO16 4GX: not on the flood risk listSO16 4GZ: not on the flood risk listSO16 4HA: not on the flood risk listSO16 4HB: not on the flood risk listSO16 4HD: not on the flood risk listSO16 4HG: not on the flood risk listSO16 4HH: not on the flood risk listSO16 4HN: not on the flood risk listSO16 4HQ: not on the flood risk listSO16 4HR: not on the flood risk listSO16 4HS: not on the flood risk listSO16 4HT: not on the flood risk listSO16 4HU: not on the flood risk listSO16 4HW: not on the flood risk listSO16 4HX: not on the flood risk listSO16 4HY: not on the flood risk listSO16 4HZ: not on the flood risk listSO16 4JA: not on the flood risk listSO16 4JB: not on the flood risk listSO16 4JE: not on the flood risk listSO16 4JF: not on the flood risk listSO16 4JJ: not on the flood risk listSO16 4LE: not on the flood risk listSO16 4LF: not on the flood risk listSO16 4LG: not on the flood risk listSO16 4LH: not on the flood risk listSO16 4LQ: not on the flood risk listSO16 4LZ: not on the flood risk listSO16 4NA: not on the flood risk listSO16 4NB: not on the flood risk listSO16 4ND: not on the flood risk listSO16 4NE: not on the flood risk listSO16 4NF: not on the flood risk listSO16 4NG: not on the flood risk listSO16 4NH: not on the flood risk listSO16 4NJ: not on the flood risk listSO16 4NL: not on the flood risk listSO16 4NN: not on the flood risk listSO16 4NP: not on the flood risk listSO16 4NQ: not on the flood risk listSO16 4NR: not on the flood risk listSO16 4NS: not on the flood risk listSO16 4NT: not on the flood risk listSO16 4NU: not on the flood risk listSO16 4NW: not on the flood risk listSO16 4NX: not on the flood risk listSO16 4NY: not on the flood risk listSO16 4PL: not on the flood risk listSO16 4PN: not on the flood risk listSO16 4PP: not on the flood risk listSO16 4PT: not on the flood risk listSO16 4PU: not on the flood risk listSO16 4PW: not on the flood risk listSO16 4PX: not on the flood risk listSO16 4PY: not on the flood risk listSO16 4PZ: not on the flood risk listSO16 4QA: not on the flood risk listSO16 4QB: not on the flood risk listSO16 4QD: not on the flood risk listSO16 4QE: not on the flood risk listSO16 4QF: not on the flood risk listSO16 4QG: not on the flood risk listSO16 4QH: not on the flood risk listSO16 4QJ: not on the flood risk listSO16 4QL: not on the flood risk listSO16 4QN: not on the flood risk listSO16 4QP: not on the flood risk listSO16 4QQ: not on the flood risk listSO16 4QR: not on the flood risk listSO16 4QS: not on the flood risk listSO16 4QT: not on the flood risk listSO16 4QU: not on the flood risk listSO16 4QW: not on the flood risk listSO16 4QX: not on the flood risk listSO16 4QY: not on the flood risk listSO16 4QZ: not on the flood risk listSO16 4RA: not on the flood risk listSO16 4RD: not on the flood risk listSO16 4RE: not on the flood risk listSO16 4RF: not on the flood risk listSO16 4RG: not on the flood risk listSO16 4RJ: not on the flood risk listSO16 4RL: not on the flood risk listSO16 4RP: not on the flood risk listSO16 4RS: not on the flood risk listSO16 4XE: not on the flood risk listSO16 4DP: low flood risk at worstSO16 4DQ: low flood risk at worstSO16 4DS: medium flood risk at worstSO16 4LJ: medium flood risk at worstSO16 4LP: medium flood risk at worstSO16 4LY: medium flood risk at worstSO16 4DT: high flood riskSO16 4LL: high flood riskSO16 4LN: high flood riskSO16 4NZ: high flood risk Millbrook Map of every postcode in the SO16 4 sector, by flood risk Of the 205 postcodes in the SO16 4 sector that ONS places, 4 have a home or business at high risk, 4 are at medium risk at worst, 2 are at low risk at worst and 195 are not on the Environment Agency's at-risk list. Places named: Millbrook. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. Millbrook
  • A home or business at high risk: 4
  • At medium risk at worst: 4
  • At low risk at worst: 2
  • At very low risk only: 0
  • Not on the at-risk list: 195

Of the 205 postcodes in the SO16 4 sector that ONS places, 4 have a home or business at high risk, 4 are at medium risk at worst, 2 are at low risk at worst and 195 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. 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.

SO16 4LN27 at high riskSO16 4LL9 at high riskSO16 4DT1 at high riskSO16 4NZ1 at high risk

What do homes sell for in SO16 4?

Homes in SO16 4 sold for a typical £230,000 in the 12 months to August 2026, across 61 sales, down 9.6% on the 12 months before, HM Land Registry's figures show.

£230,000 typical price, the 12 months to August 2026
£254,500 12 months to August 2025
▼ down 9.6% on the 12 months before
  • Detached 3 sales, too few to price
  • Semi-detached £264,000 14 sales
  • Terraced £280,000 19 sales
  • Flat or maisonette £135,000 25 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 SO16 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 SO16 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.

SO16 4AASO16 4ABSO16 4ADSO16 4AESO16 4AFSO16 4AGSO16 4AHSO16 4AJSO16 4ALSO16 4ANSO16 4APSO16 4AQSO16 4ARSO16 4ASSO16 4ATSO16 4AUSO16 4AWSO16 4AXSO16 4AYSO16 4AZSO16 4BASO16 4BBSO16 4BDSO16 4BESO16 4BFSO16 4BGSO16 4BHSO16 4BJSO16 4BLSO16 4BNSO16 4BPSO16 4BQSO16 4BSSO16 4BTSO16 4BUSO16 4BWSO16 4BXSO16 4BYSO16 4BZSO16 4DASO16 4DBSO16 4DDSO16 4DESO16 4DFSO16 4DGSO16 4DHSO16 4DJSO16 4DLSO16 4DNSO16 4DPSO16 4DQSO16 4DRSO16 4DSSO16 4DTSO16 4DUSO16 4DWSO16 4DXSO16 4DYSO16 4DZSO16 4EASO16 4EBSO16 4EDSO16 4EESO16 4EFSO16 4EGSO16 4EHSO16 4EJSO16 4ELSO16 4ENSO16 4EPSO16 4EQSO16 4ERSO16 4ESSO16 4ETSO16 4EUSO16 4EWSO16 4EXSO16 4EYSO16 4EZSO16 4FASO16 4FBSO16 4FDSO16 4FESO16 4FGSO16 4FHSO16 4FLSO16 4FNSO16 4FPSO16 4FQSO16 4FRSO16 4FSSO16 4FTSO16 4FUSO16 4FWSO16 4FXSO16 4FYSO16 4FZSO16 4GASO16 4GBSO16 4GDSO16 4GESO16 4GFSO16 4GGSO16 4GHSO16 4GJSO16 4GLSO16 4GNSO16 4GPSO16 4GSSO16 4GWSO16 4GXSO16 4GZSO16 4HASO16 4HBSO16 4HDSO16 4HGSO16 4HHSO16 4HNSO16 4HQSO16 4HRSO16 4HSSO16 4HTSO16 4HUSO16 4HWSO16 4HXSO16 4HYSO16 4HZSO16 4JASO16 4JBSO16 4JDSO16 4JESO16 4JFSO16 4JGSO16 4JHSO16 4JJSO16 4LESO16 4LFSO16 4LGSO16 4LHSO16 4LJSO16 4LLSO16 4LNSO16 4LPSO16 4LQSO16 4LYSO16 4LZSO16 4NASO16 4NBSO16 4NDSO16 4NESO16 4NFSO16 4NGSO16 4NHSO16 4NJSO16 4NLSO16 4NNSO16 4NPSO16 4NQSO16 4NRSO16 4NSSO16 4NTSO16 4NUSO16 4NWSO16 4NXSO16 4NYSO16 4NZSO16 4PLSO16 4PNSO16 4PPSO16 4PTSO16 4PUSO16 4PWSO16 4PXSO16 4PYSO16 4PZSO16 4QASO16 4QBSO16 4QDSO16 4QESO16 4QFSO16 4QGSO16 4QHSO16 4QJSO16 4QLSO16 4QNSO16 4QPSO16 4QQSO16 4QRSO16 4QSSO16 4QTSO16 4QUSO16 4QWSO16 4QXSO16 4QYSO16 4QZSO16 4RASO16 4RDSO16 4RESO16 4RFSO16 4RGSO16 4RJSO16 4RLSO16 4RPSO16 4RSSO16 4XE

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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