SO45 4 postcode sector in the SO45 district

SO45 4 is a sector of the SO45 district: every postcode that starts SO45 4. It has 151 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 SO45 4 sector, by flood risk

Map of every postcode in the SO45 4 sector, by flood risk Of the 151 postcodes in the SO45 4 sector that ONS places, 3 have a home or business at high risk, 2 are at low risk at worst and 146 are not on the Environment Agency's at-risk list. 2 postcodes lie beyond the edge and are listed under the map. Places named: Hythe and Dibden Purlieu. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A326 SO45 4AB: not on the flood risk listSO45 4AH: not on the flood risk listSO45 4AJ: not on the flood risk listSO45 4AL: not on the flood risk listSO45 4AN: not on the flood risk listSO45 4AP: not on the flood risk listSO45 4AS: not on the flood risk listSO45 4AT: not on the flood risk listSO45 4AX: not on the flood risk listSO45 4AY: not on the flood risk listSO45 4AZ: not on the flood risk listSO45 4BA: not on the flood risk listSO45 4BB: not on the flood risk listSO45 4BD: not on the flood risk listSO45 4BE: not on the flood risk listSO45 4BU: not on the flood risk listSO45 4BW: not on the flood risk listSO45 4BX: not on the flood risk listSO45 4BY: not on the flood risk listSO45 4BZ: not on the flood risk listSO45 4EY: not on the flood risk listSO45 4GZ: not on the flood risk listSO45 4HA: not on the flood risk listSO45 4HB: not on the flood risk listSO45 4HD: not on the flood risk listSO45 4HE: not on the flood risk listSO45 4HF: not on the flood risk listSO45 4HG: not on the flood risk listSO45 4HH: not on the flood risk listSO45 4HJ: not on the flood risk listSO45 4HN: not on the flood risk listSO45 4HP: not on the flood risk listSO45 4HQ: not on the flood risk listSO45 4HR: not on the flood risk listSO45 4HS: not on the flood risk listSO45 4HW: not on the flood risk listSO45 4HX: not on the flood risk listSO45 4HY: not on the flood risk listSO45 4HZ: not on the flood risk listSO45 4JA: not on the flood risk listSO45 4JB: not on the flood risk listSO45 4JD: not on the flood risk listSO45 4JE: not on the flood risk listSO45 4JF: not on the flood risk listSO45 4JG: not on the flood risk listSO45 4JH: not on the flood risk listSO45 4JJ: not on the flood risk listSO45 4JL: not on the flood risk listSO45 4JN: not on the flood risk listSO45 4JP: not on the flood risk listSO45 4JQ: not on the flood risk listSO45 4JR: not on the flood risk listSO45 4JS: not on the flood risk listSO45 4JT: not on the flood risk listSO45 4JU: not on the flood risk listSO45 4JW: not on the flood risk listSO45 4JX: not on the flood risk listSO45 4JY: not on the flood risk listSO45 4JZ: not on the flood risk listSO45 4LA: not on the flood risk listSO45 4LB: not on the flood risk listSO45 4LD: not on the flood risk listSO45 4LE: not on the flood risk listSO45 4LF: not on the flood risk listSO45 4LG: not on the flood risk listSO45 4LH: not on the flood risk listSO45 4LJ: not on the flood risk listSO45 4LL: not on the flood risk listSO45 4LN: not on the flood risk listSO45 4LP: not on the flood risk listSO45 4LQ: not on the flood risk listSO45 4LR: not on the flood risk listSO45 4LS: not on the flood risk listSO45 4LT: not on the flood risk listSO45 4LU: not on the flood risk listSO45 4LX: not on the flood risk listSO45 4LY: not on the flood risk listSO45 4LZ: not on the flood risk listSO45 4NA: not on the flood risk listSO45 4ND: not on the flood risk listSO45 4NE: not on the flood risk listSO45 4NF: not on the flood risk listSO45 4NG: not on the flood risk listSO45 4NH: not on the flood risk listSO45 4NJ: not on the flood risk listSO45 4NN: not on the flood risk listSO45 4NR: not on the flood risk listSO45 4NS: not on the flood risk listSO45 4NT: not on the flood risk listSO45 4NU: not on the flood risk listSO45 4NW: not on the flood risk listSO45 4NX: not on the flood risk listSO45 4NY: not on the flood risk listSO45 4PA: not on the flood risk listSO45 4PB: not on the flood risk listSO45 4PD: not on the flood risk listSO45 4PE: not on the flood risk listSO45 4PF: not on the flood risk listSO45 4PG: not on the flood risk listSO45 4PH: not on the flood risk listSO45 4PJ: not on the flood risk listSO45 4PL: not on the flood risk listSO45 4PN: not on the flood risk listSO45 4PP: not on the flood risk listSO45 4PQ: not on the flood risk listSO45 4PR: not on the flood risk listSO45 4PS: not on the flood risk listSO45 4PU: not on the flood risk listSO45 4PW: not on the flood risk listSO45 4PX: not on the flood risk listSO45 4PY: not on the flood risk listSO45 4PZ: not on the flood risk listSO45 4QA: not on the flood risk listSO45 4QB: not on the flood risk listSO45 4QD: not on the flood risk listSO45 4QF: not on the flood risk listSO45 4QG: not on the flood risk listSO45 4QH: not on the flood risk listSO45 4QJ: not on the flood risk listSO45 4QL: not on the flood risk listSO45 4QN: not on the flood risk listSO45 4QP: not on the flood risk listSO45 4QS: not on the flood risk listSO45 4RA: not on the flood risk listSO45 4RB: not on the flood risk listSO45 4RD: not on the flood risk listSO45 4RE: not on the flood risk listSO45 4RF: not on the flood risk listSO45 4RG: not on the flood risk listSO45 4RH: not on the flood risk listSO45 4RJ: not on the flood risk listSO45 4RL: not on the flood risk listSO45 4RN: not on the flood risk listSO45 4RP: not on the flood risk listSO45 4RR: not on the flood risk listSO45 4RS: not on the flood risk listSO45 4RT: not on the flood risk listSO45 4RW: not on the flood risk listSO45 4RX: not on the flood risk listSO45 4SB: not on the flood risk listSO45 4SE: not on the flood risk listSO45 4ZB: not on the flood risk listSO45 4ZD: not on the flood risk listSO45 4ZF: not on the flood risk listSO45 4NL: low flood risk at worstSO45 4NB: high flood riskSO45 4NP: high flood riskSO45 4NZ: high flood risk Hythe and Dibden Purlieu Map of every postcode in the SO45 4 sector, by flood risk Of the 151 postcodes in the SO45 4 sector that ONS places, 3 have a home or business at high risk, 2 are at low risk at worst and 146 are not on the Environment Agency's at-risk list. 2 postcodes lie beyond the edge and are listed under the map. Places named: Hythe and Dibden Purlieu. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. Hythe and Dibden Purlieu
  • A home or business at high risk: 3
  • At medium risk at worst: 0
  • At low risk at worst: 2
  • At very low risk only: 0
  • Not on the at-risk list: 146

Of the 151 postcodes in the SO45 4 sector that ONS places, 3 have a home or business at high risk, 2 are at low risk at worst and 146 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.

SO45 4NP7 at high riskSO45 4NB5 at high riskSO45 4NZ2 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.

SO45 4HUSO45 4RQ

What do homes sell for in SO45 4?

Homes in SO45 4 sold for a typical £375,000 in the 12 months to August 2026, across 69 sales, up 1.4% on the 12 months before, HM Land Registry's figures show.

£375,000 typical price, the 12 months to August 2026
£370,000 12 months to August 2025
▲ up 1.4% on the 12 months before
  • Detached £469,750 32 sales
  • Semi-detached £338,975 24 sales
  • Terraced £301,000 8 sales
  • Flat or maisonette £152,500 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 SO45 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 SO45 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.

SO45 4ABSO45 4AHSO45 4AJSO45 4ALSO45 4ANSO45 4APSO45 4ASSO45 4ATSO45 4AXSO45 4AYSO45 4AZSO45 4BASO45 4BBSO45 4BDSO45 4BESO45 4BUSO45 4BWSO45 4BXSO45 4BYSO45 4BZSO45 4EYSO45 4GZSO45 4HASO45 4HBSO45 4HDSO45 4HESO45 4HFSO45 4HGSO45 4HHSO45 4HJSO45 4HNSO45 4HPSO45 4HQSO45 4HRSO45 4HSSO45 4HUSO45 4HWSO45 4HXSO45 4HYSO45 4HZSO45 4JASO45 4JBSO45 4JDSO45 4JESO45 4JFSO45 4JGSO45 4JHSO45 4JJSO45 4JLSO45 4JNSO45 4JPSO45 4JQSO45 4JRSO45 4JSSO45 4JTSO45 4JUSO45 4JWSO45 4JXSO45 4JYSO45 4JZSO45 4LASO45 4LBSO45 4LDSO45 4LESO45 4LFSO45 4LGSO45 4LHSO45 4LJSO45 4LLSO45 4LNSO45 4LPSO45 4LQSO45 4LRSO45 4LSSO45 4LTSO45 4LUSO45 4LXSO45 4LYSO45 4LZSO45 4NASO45 4NBSO45 4NDSO45 4NESO45 4NFSO45 4NGSO45 4NHSO45 4NJSO45 4NLSO45 4NNSO45 4NPSO45 4NRSO45 4NSSO45 4NTSO45 4NUSO45 4NWSO45 4NXSO45 4NYSO45 4NZSO45 4PASO45 4PBSO45 4PDSO45 4PESO45 4PFSO45 4PGSO45 4PHSO45 4PJSO45 4PLSO45 4PNSO45 4PPSO45 4PQSO45 4PRSO45 4PSSO45 4PTSO45 4PUSO45 4PWSO45 4PXSO45 4PYSO45 4PZSO45 4QASO45 4QBSO45 4QDSO45 4QFSO45 4QGSO45 4QHSO45 4QJSO45 4QLSO45 4QNSO45 4QPSO45 4QSSO45 4RASO45 4RBSO45 4RDSO45 4RESO45 4RFSO45 4RGSO45 4RHSO45 4RJSO45 4RLSO45 4RNSO45 4RPSO45 4RQSO45 4RRSO45 4RSSO45 4RTSO45 4RWSO45 4RXSO45 4SBSO45 4SESO45 4ZBSO45 4ZDSO45 4ZF

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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