SO23 0 postcode sector in the SO23 district

SO23 0 is a sector of the SO23 district: every postcode that starts SO23 0. It has 131 postcodes in use, 6 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 SO23 0 sector, by flood risk

Map of every postcode in the SO23 0 sector, by flood risk Of the 131 postcodes in the SO23 0 sector that ONS places, 3 are at low risk at worst and 128 are not on the Environment Agency's at-risk list. Places named: St Bartholomew, St Michael. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. M3A272A31 SO23 0AA: not on the flood risk listSO23 0AD: not on the flood risk listSO23 0AE: not on the flood risk listSO23 0AF: not on the flood risk listSO23 0AG: not on the flood risk listSO23 0AH: not on the flood risk listSO23 0AL: not on the flood risk listSO23 0AN: not on the flood risk listSO23 0AP: not on the flood risk listSO23 0AQ: not on the flood risk listSO23 0AR: not on the flood risk listSO23 0AS: not on the flood risk listSO23 0BB: not on the flood risk listSO23 0DA: not on the flood risk listSO23 0EL: not on the flood risk listSO23 0EN: not on the flood risk listSO23 0EP: not on the flood risk listSO23 0EQ: not on the flood risk listSO23 0ER: not on the flood risk listSO23 0ET: not on the flood risk listSO23 0EU: not on the flood risk listSO23 0EX: not on the flood risk listSO23 0EY: not on the flood risk listSO23 0HA: not on the flood risk listSO23 0HB: not on the flood risk listSO23 0HD: not on the flood risk listSO23 0HE: not on the flood risk listSO23 0HF: not on the flood risk listSO23 0HG: not on the flood risk listSO23 0HH: not on the flood risk listSO23 0HJ: not on the flood risk listSO23 0HL: not on the flood risk listSO23 0HN: not on the flood risk listSO23 0HQ: not on the flood risk listSO23 0HR: not on the flood risk listSO23 0HT: not on the flood risk listSO23 0HU: not on the flood risk listSO23 0HX: not on the flood risk listSO23 0HY: not on the flood risk listSO23 0HZ: not on the flood risk listSO23 0JA: not on the flood risk listSO23 0JB: not on the flood risk listSO23 0JD: not on the flood risk listSO23 0JE: not on the flood risk listSO23 0JF: not on the flood risk listSO23 0JG: not on the flood risk listSO23 0JH: not on the flood risk listSO23 0JJ: not on the flood risk listSO23 0JL: not on the flood risk listSO23 0JN: not on the flood risk listSO23 0JP: not on the flood risk listSO23 0JQ: not on the flood risk listSO23 0JR: not on the flood risk listSO23 0JS: not on the flood risk listSO23 0JT: not on the flood risk listSO23 0JU: not on the flood risk listSO23 0JW: not on the flood risk listSO23 0JX: not on the flood risk listSO23 0JY: not on the flood risk listSO23 0JZ: not on the flood risk listSO23 0LA: not on the flood risk listSO23 0LB: not on the flood risk listSO23 0LD: not on the flood risk listSO23 0LE: not on the flood risk listSO23 0LF: not on the flood risk listSO23 0LG: not on the flood risk listSO23 0LN: not on the flood risk listSO23 0LR: not on the flood risk listSO23 0LU: not on the flood risk listSO23 0LX: not on the flood risk listSO23 0LY: not on the flood risk listSO23 0LZ: not on the flood risk listSO23 0NA: not on the flood risk listSO23 0NF: not on the flood risk listSO23 0NG: not on the flood risk listSO23 0NH: not on the flood risk listSO23 0NJ: not on the flood risk listSO23 0NL: not on the flood risk listSO23 0NN: not on the flood risk listSO23 0NP: not on the flood risk listSO23 0NQ: not on the flood risk listSO23 0NR: not on the flood risk listSO23 0NS: not on the flood risk listSO23 0NT: not on the flood risk listSO23 0NU: not on the flood risk listSO23 0NW: not on the flood risk listSO23 0NX: not on the flood risk listSO23 0NY: not on the flood risk listSO23 0NZ: not on the flood risk listSO23 0PA: not on the flood risk listSO23 0PB: not on the flood risk listSO23 0PD: not on the flood risk listSO23 0PE: not on the flood risk listSO23 0PF: not on the flood risk listSO23 0PG: not on the flood risk listSO23 0PH: not on the flood risk listSO23 0PJ: not on the flood risk listSO23 0PL: not on the flood risk listSO23 0PP: not on the flood risk listSO23 0PR: not on the flood risk listSO23 0PS: not on the flood risk listSO23 0PT: not on the flood risk listSO23 0PU: not on the flood risk listSO23 0PW: not on the flood risk listSO23 0PX: not on the flood risk listSO23 0PY: not on the flood risk listSO23 0PZ: not on the flood risk listSO23 0QA: not on the flood risk listSO23 0QB: not on the flood risk listSO23 0QD: not on the flood risk listSO23 0QE: not on the flood risk listSO23 0QF: not on the flood risk listSO23 0QG: not on the flood risk listSO23 0QH: not on the flood risk listSO23 0QJ: not on the flood risk listSO23 0QL: not on the flood risk listSO23 0QN: not on the flood risk listSO23 0QP: not on the flood risk listSO23 0QQ: not on the flood risk listSO23 0QR: not on the flood risk listSO23 0QS: not on the flood risk listSO23 0QT: not on the flood risk listSO23 0QU: not on the flood risk listSO23 0QW: not on the flood risk listSO23 0QX: not on the flood risk listSO23 0RH: not on the flood risk listSO23 0EJ: low flood risk at worstSO23 0ES: low flood risk at worstSO23 0EW: low flood risk at worst St BartholomewSt Michael Map of every postcode in the SO23 0 sector, by flood risk Of the 131 postcodes in the SO23 0 sector that ONS places, 3 are at low risk at worst and 128 are not on the Environment Agency's at-risk list. Places named: St Bartholomew, St Michael. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. St BartholomewSt Michael
  • A home or business at high risk: 0
  • At medium risk at worst: 0
  • At low risk at worst: 3
  • At very low risk only: 0
  • Not on the at-risk list: 128

Of the 131 postcodes in the SO23 0 sector that ONS places, 3 are at low risk at worst and 128 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

What do homes sell for in SO23 0?

Homes in SO23 0 sold for a typical £450,000 in the 12 months to August 2026, across 56 sales, up 7.9% on the 12 months before, HM Land Registry's figures show.

£450,000 typical price, the 12 months to August 2026
£417,000 12 months to August 2025
▲ up 7.9% on the 12 months before
  • Detached £1,215,000 5 sales
  • Semi-detached £497,500 12 sales
  • Terraced £455,000 31 sales
  • Flat or maisonette £232,500 8 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 SO23 0. 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 SO23 0

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.

SO23 0AASO23 0ADSO23 0AESO23 0AFSO23 0AGSO23 0AHSO23 0ALSO23 0ANSO23 0APSO23 0AQSO23 0ARSO23 0ASSO23 0BBSO23 0DASO23 0EJSO23 0ELSO23 0ENSO23 0EPSO23 0EQSO23 0ERSO23 0ESSO23 0ETSO23 0EUSO23 0EWSO23 0EXSO23 0EYSO23 0HASO23 0HBSO23 0HDSO23 0HESO23 0HFSO23 0HGSO23 0HHSO23 0HJSO23 0HLSO23 0HNSO23 0HQSO23 0HRSO23 0HTSO23 0HUSO23 0HXSO23 0HYSO23 0HZSO23 0JASO23 0JBSO23 0JDSO23 0JESO23 0JFSO23 0JGSO23 0JHSO23 0JJSO23 0JLSO23 0JNSO23 0JPSO23 0JQSO23 0JRSO23 0JSSO23 0JTSO23 0JUSO23 0JWSO23 0JXSO23 0JYSO23 0JZSO23 0LASO23 0LBSO23 0LDSO23 0LESO23 0LFSO23 0LGSO23 0LNSO23 0LRSO23 0LUSO23 0LXSO23 0LYSO23 0LZSO23 0NASO23 0NFSO23 0NGSO23 0NHSO23 0NJSO23 0NLSO23 0NNSO23 0NPSO23 0NQSO23 0NRSO23 0NSSO23 0NTSO23 0NUSO23 0NWSO23 0NXSO23 0NYSO23 0NZSO23 0PASO23 0PBSO23 0PDSO23 0PESO23 0PFSO23 0PGSO23 0PHSO23 0PJSO23 0PLSO23 0PPSO23 0PRSO23 0PSSO23 0PTSO23 0PUSO23 0PWSO23 0PXSO23 0PYSO23 0PZSO23 0QASO23 0QBSO23 0QDSO23 0QESO23 0QFSO23 0QGSO23 0QHSO23 0QJSO23 0QLSO23 0QNSO23 0QPSO23 0QQSO23 0QRSO23 0QSSO23 0QTSO23 0QUSO23 0QWSO23 0QXSO23 0QYSO23 0RHSO23 0ZY

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.

Check a postcode

Something wrong on this page? Report an error and we will check it against the source.