SO45 1 postcode sector in the SO45 district

SO45 1 is a sector of the SO45 district: every postcode that starts SO45 1. It has 191 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 SO45 1 sector, by flood risk

Map of every postcode in the SO45 1 sector, by flood risk Of the 191 postcodes in the SO45 1 sector that ONS places, 4 have a home or business at high risk, 2 are at low risk at worst, 1 are at very low risk only and 184 are not on the Environment Agency's at-risk list. Places named: Hythe and Dibden Purlieu, Holbury, Blackfield and Langley, Hamble-le-Rice. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. A326 SO45 1AA: not on the flood risk listSO45 1AB: not on the flood risk listSO45 1AF: not on the flood risk listSO45 1AG: not on the flood risk listSO45 1AH: not on the flood risk listSO45 1AJ: not on the flood risk listSO45 1AL: not on the flood risk listSO45 1AP: not on the flood risk listSO45 1AZ: not on the flood risk listSO45 1BD: not on the flood risk listSO45 1BE: not on the flood risk listSO45 1BG: not on the flood risk listSO45 1BJ: not on the flood risk listSO45 1BL: not on the flood risk listSO45 1BP: not on the flood risk listSO45 1BS: not on the flood risk listSO45 1BT: not on the flood risk listSO45 1BU: not on the flood risk listSO45 1BW: not on the flood risk listSO45 1BX: not on the flood risk listSO45 1BY: not on the flood risk listSO45 1BZ: not on the flood risk listSO45 1DA: not on the flood risk listSO45 1DB: not on the flood risk listSO45 1DD: not on the flood risk listSO45 1DE: not on the flood risk listSO45 1DF: not on the flood risk listSO45 1DG: not on the flood risk listSO45 1DH: not on the flood risk listSO45 1DJ: not on the flood risk listSO45 1DL: not on the flood risk listSO45 1DP: not on the flood risk listSO45 1DQ: not on the flood risk listSO45 1DR: not on the flood risk listSO45 1DS: not on the flood risk listSO45 1DU: not on the flood risk listSO45 1DW: not on the flood risk listSO45 1DZ: not on the flood risk listSO45 1EA: not on the flood risk listSO45 1EB: not on the flood risk listSO45 1ED: not on the flood risk listSO45 1EE: not on the flood risk listSO45 1EF: not on the flood risk listSO45 1EG: not on the flood risk listSO45 1EH: not on the flood risk listSO45 1EJ: not on the flood risk listSO45 1EL: not on the flood risk listSO45 1EN: not on the flood risk listSO45 1EQ: not on the flood risk listSO45 1ER: not on the flood risk listSO45 1ET: not on the flood risk listSO45 1EU: not on the flood risk listSO45 1EW: not on the flood risk listSO45 1EX: not on the flood risk listSO45 1EZ: not on the flood risk listSO45 1FA: not on the flood risk listSO45 1FD: not on the flood risk listSO45 1FE: not on the flood risk listSO45 1FG: not on the flood risk listSO45 1FH: not on the flood risk listSO45 1FJ: not on the flood risk listSO45 1FL: not on the flood risk listSO45 1FN: not on the flood risk listSO45 1FP: not on the flood risk listSO45 1FQ: not on the flood risk listSO45 1FR: not on the flood risk listSO45 1FT: not on the flood risk listSO45 1FW: not on the flood risk listSO45 1FX: not on the flood risk listSO45 1FY: not on the flood risk listSO45 1FZ: not on the flood risk listSO45 1GA: not on the flood risk listSO45 1GD: not on the flood risk listSO45 1GW: not on the flood risk listSO45 1HA: not on the flood risk listSO45 1HB: not on the flood risk listSO45 1QP: not on the flood risk listSO45 1RF: not on the flood risk listSO45 1RG: not on the flood risk listSO45 1RH: not on the flood risk listSO45 1RJ: not on the flood risk listSO45 1RL: not on the flood risk listSO45 1RN: not on the flood risk listSO45 1RP: not on the flood risk listSO45 1RS: not on the flood risk listSO45 1RW: not on the flood risk listSO45 1RY: not on the flood risk listSO45 1SA: not on the flood risk listSO45 1SD: not on the flood risk listSO45 1SE: not on the flood risk listSO45 1SF: not on the flood risk listSO45 1SG: not on the flood risk listSO45 1SH: not on the flood risk listSO45 1SJ: not on the flood risk listSO45 1SL: not on the flood risk listSO45 1SN: not on the flood risk listSO45 1SP: not on the flood risk listSO45 1SQ: not on the flood risk listSO45 1SR: not on the flood risk listSO45 1SS: not on the flood risk listSO45 1TX: not on the flood risk listSO45 1UB: not on the flood risk listSO45 1UZ: not on the flood risk listSO45 1WA: not on the flood risk listSO45 1WD: not on the flood risk listSO45 1WE: not on the flood risk listSO45 1WF: not on the flood risk listSO45 1WG: not on the flood risk listSO45 1WH: not on the flood risk listSO45 1WJ: not on the flood risk listSO45 1WL: not on the flood risk listSO45 1WN: not on the flood risk listSO45 1WP: not on the flood risk listSO45 1WQ: not on the flood risk listSO45 1WR: not on the flood risk listSO45 1WS: not on the flood risk listSO45 1WT: not on the flood risk listSO45 1WU: not on the flood risk listSO45 1WW: not on the flood risk listSO45 1WX: not on the flood risk listSO45 1WY: not on the flood risk listSO45 1WZ: not on the flood risk listSO45 1XA: not on the flood risk listSO45 1XD: not on the flood risk listSO45 1XE: not on the flood risk listSO45 1XF: not on the flood risk listSO45 1XG: not on the flood risk listSO45 1XH: not on the flood risk listSO45 1XJ: not on the flood risk listSO45 1XL: not on the flood risk listSO45 1XN: not on the flood risk listSO45 1XP: not on the flood risk listSO45 1XQ: not on the flood risk listSO45 1XR: not on the flood risk listSO45 1XS: not on the flood risk listSO45 1XT: not on the flood risk listSO45 1XU: not on the flood risk listSO45 1XW: not on the flood risk listSO45 1XY: not on the flood risk listSO45 1YA: not on the flood risk listSO45 1YB: not on the flood risk listSO45 1YD: not on the flood risk listSO45 1YE: not on the flood risk listSO45 1YF: not on the flood risk listSO45 1YG: not on the flood risk listSO45 1YH: not on the flood risk listSO45 1YJ: not on the flood risk listSO45 1YL: not on the flood risk listSO45 1YN: not on the flood risk listSO45 1YP: not on the flood risk listSO45 1YR: not on the flood risk listSO45 1YS: not on the flood risk listSO45 1YT: not on the flood risk listSO45 1YU: not on the flood risk listSO45 1YW: not on the flood risk listSO45 1YX: not on the flood risk listSO45 1YY: not on the flood risk listSO45 1YZ: not on the flood risk listSO45 1ZA: not on the flood risk listSO45 1ZN: not on the flood risk listSO45 1ZP: not on the flood risk listSO45 1ZQ: not on the flood risk listSO45 1ZR: not on the flood risk listSO45 1ZT: not on the flood risk listSO45 1ZU: not on the flood risk listSO45 1ZW: not on the flood risk listSO45 1ZX: not on the flood risk listSO45 1ZY: not on the flood risk listSO45 1BH: very low flood risk onlySO45 1AE: low flood risk at worstSO45 1BB: low flood risk at worstSO45 1AD: high flood riskSO45 1BR: high flood riskSO45 1DT: high flood riskSO45 1TW: high flood risk Hythe and Dibden PurlieuHolburyBlackfield and LangleyHamble-le-Rice Map of every postcode in the SO45 1 sector, by flood risk Of the 191 postcodes in the SO45 1 sector that ONS places, 4 have a home or business at high risk, 2 are at low risk at worst, 1 are at very low risk only and 184 are not on the Environment Agency's at-risk list. Places named: Hythe and Dibden Purlieu, Holbury, Blackfield and Langley. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. A326 Hythe and Dibden PurlieuHolburyBlackfield and Langley
  • A home or business at high risk: 4
  • At medium risk at worst: 0
  • At low risk at worst: 2
  • At very low risk only: 1
  • Not on the at-risk list: 184

Of the 191 postcodes in the SO45 1 sector that ONS places, 4 have a home or business at high risk, 2 are at low risk at worst, 1 are at very low risk only and 184 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 1DT30 at high riskSO45 1BR17 at high riskSO45 1TW1 at high riskSO45 1AD1 at high risk

What do homes sell for in SO45 1?

Homes in SO45 1 sold for a typical £345,000 in the 12 months to August 2026, across 68 sales, down 3.5% on the 12 months before, HM Land Registry's figures show.

£345,000 typical price, the 12 months to August 2026
£357,500 12 months to August 2025
▼ down 3.5% on the 12 months before
  • Detached £427,500 40 sales
  • Semi-detached £300,000 17 sales
  • Terraced £267,500 11 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 1. 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 1

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 1AASO45 1ABSO45 1ADSO45 1AESO45 1AFSO45 1AGSO45 1AHSO45 1AJSO45 1ALSO45 1APSO45 1AZSO45 1BBSO45 1BDSO45 1BESO45 1BGSO45 1BHSO45 1BJSO45 1BLSO45 1BNSO45 1BPSO45 1BRSO45 1BSSO45 1BTSO45 1BUSO45 1BWSO45 1BXSO45 1BYSO45 1BZSO45 1DASO45 1DBSO45 1DDSO45 1DESO45 1DFSO45 1DGSO45 1DHSO45 1DJSO45 1DLSO45 1DPSO45 1DQSO45 1DRSO45 1DSSO45 1DTSO45 1DUSO45 1DWSO45 1DXSO45 1DZSO45 1EASO45 1EBSO45 1EDSO45 1EESO45 1EFSO45 1EGSO45 1EHSO45 1EJSO45 1ELSO45 1ENSO45 1EPSO45 1EQSO45 1ERSO45 1ETSO45 1EUSO45 1EWSO45 1EXSO45 1EYSO45 1EZSO45 1FASO45 1FDSO45 1FESO45 1FGSO45 1FHSO45 1FJSO45 1FLSO45 1FNSO45 1FPSO45 1FQSO45 1FRSO45 1FTSO45 1FWSO45 1FXSO45 1FYSO45 1FZSO45 1GASO45 1GDSO45 1GWSO45 1HASO45 1HBSO45 1QPSO45 1QQSO45 1RBSO45 1RDSO45 1RESO45 1RFSO45 1RGSO45 1RHSO45 1RJSO45 1RLSO45 1RNSO45 1RPSO45 1RSSO45 1RWSO45 1RYSO45 1SASO45 1SBSO45 1SDSO45 1SESO45 1SFSO45 1SGSO45 1SHSO45 1SJSO45 1SLSO45 1SNSO45 1SPSO45 1SQSO45 1SRSO45 1SSSO45 1TWSO45 1TXSO45 1UBSO45 1UZSO45 1WASO45 1WBSO45 1WDSO45 1WESO45 1WFSO45 1WGSO45 1WHSO45 1WJSO45 1WLSO45 1WNSO45 1WPSO45 1WQSO45 1WRSO45 1WSSO45 1WTSO45 1WUSO45 1WWSO45 1WXSO45 1WYSO45 1WZSO45 1XASO45 1XBSO45 1XDSO45 1XESO45 1XFSO45 1XGSO45 1XHSO45 1XJSO45 1XLSO45 1XNSO45 1XPSO45 1XQSO45 1XRSO45 1XSSO45 1XTSO45 1XUSO45 1XWSO45 1XXSO45 1XYSO45 1XZSO45 1YASO45 1YBSO45 1YDSO45 1YESO45 1YFSO45 1YGSO45 1YHSO45 1YJSO45 1YLSO45 1YNSO45 1YPSO45 1YQSO45 1YRSO45 1YSSO45 1YTSO45 1YUSO45 1YWSO45 1YXSO45 1YYSO45 1YZSO45 1ZASO45 1ZLSO45 1ZNSO45 1ZPSO45 1ZQSO45 1ZRSO45 1ZTSO45 1ZUSO45 1ZWSO45 1ZXSO45 1ZYSO45 1ZZ

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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