PO4 9 postcode sector in the PO4 district

PO4 9 is a sector of the PO4 district: every postcode that starts PO4 9. It has 252 postcodes in use, 5 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 PO4 9 sector, by flood risk

Map of every postcode in the PO4 9 sector, by flood risk Of the 252 postcodes in the PO4 9 sector that ONS places, 28 have a home or business at high risk, 5 are at medium risk at worst, 20 are at low risk at worst, 5 are at very low risk only and 194 are not on the Environment Agency's at-risk list. 2 groups of postcodes at high or medium risk are outlined: 19 postcodes at high or medium risk; 7 postcodes at high or medium risk. Places named: Eastney and Craneswater, Milton. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. PO4 9AA: not on the flood risk listPO4 9AB: not on the flood risk listPO4 9AD: not on the flood risk listPO4 9AE: not on the flood risk listPO4 9AF: not on the flood risk listPO4 9AH: not on the flood risk listPO4 9AJ: not on the flood risk listPO4 9AL: not on the flood risk listPO4 9AN: not on the flood risk listPO4 9AQ: not on the flood risk listPO4 9AR: not on the flood risk listPO4 9AS: not on the flood risk listPO4 9AT: not on the flood risk listPO4 9AU: not on the flood risk listPO4 9AW: not on the flood risk listPO4 9AX: not on the flood risk listPO4 9AY: not on the flood risk listPO4 9AZ: not on the flood risk listPO4 9BA: not on the flood risk listPO4 9BB: not on the flood risk listPO4 9BD: not on the flood risk listPO4 9BE: not on the flood risk listPO4 9BG: not on the flood risk listPO4 9BH: not on the flood risk listPO4 9BJ: not on the flood risk listPO4 9BL: not on the flood risk listPO4 9BN: not on the flood risk listPO4 9BQ: not on the flood risk listPO4 9BT: not on the flood risk listPO4 9BU: not on the flood risk listPO4 9BW: not on the flood risk listPO4 9BX: not on the flood risk listPO4 9BY: not on the flood risk listPO4 9BZ: not on the flood risk listPO4 9DA: not on the flood risk listPO4 9DB: not on the flood risk listPO4 9DD: not on the flood risk listPO4 9DE: not on the flood risk listPO4 9DF: not on the flood risk listPO4 9DG: not on the flood risk listPO4 9DH: not on the flood risk listPO4 9DJ: not on the flood risk listPO4 9DL: not on the flood risk listPO4 9DN: not on the flood risk listPO4 9DP: not on the flood risk listPO4 9DQ: not on the flood risk listPO4 9DR: not on the flood risk listPO4 9DS: not on the flood risk listPO4 9DU: not on the flood risk listPO4 9DZ: not on the flood risk listPO4 9EA: not on the flood risk listPO4 9EB: not on the flood risk listPO4 9ED: not on the flood risk listPO4 9EE: not on the flood risk listPO4 9EF: not on the flood risk listPO4 9EG: not on the flood risk listPO4 9EJ: not on the flood risk listPO4 9EL: not on the flood risk listPO4 9EN: not on the flood risk listPO4 9EP: not on the flood risk listPO4 9EQ: not on the flood risk listPO4 9ER: not on the flood risk listPO4 9ES: not on the flood risk listPO4 9ET: not on the flood risk listPO4 9EU: not on the flood risk listPO4 9EY: not on the flood risk listPO4 9EZ: not on the flood risk listPO4 9FA: not on the flood risk listPO4 9FU: not on the flood risk listPO4 9GA: not on the flood risk listPO4 9GD: not on the flood risk listPO4 9GF: not on the flood risk listPO4 9HA: not on the flood risk listPO4 9HB: not on the flood risk listPO4 9HG: not on the flood risk listPO4 9HJ: not on the flood risk listPO4 9HL: not on the flood risk listPO4 9HN: not on the flood risk listPO4 9HQ: not on the flood risk listPO4 9HR: not on the flood risk listPO4 9HS: not on the flood risk listPO4 9HT: not on the flood risk listPO4 9HU: not on the flood risk listPO4 9HW: not on the flood risk listPO4 9HX: not on the flood risk listPO4 9HY: not on the flood risk listPO4 9HZ: not on the flood risk listPO4 9JA: not on the flood risk listPO4 9JD: not on the flood risk listPO4 9JE: not on the flood risk listPO4 9JG: not on the flood risk listPO4 9JN: not on the flood risk listPO4 9JP: not on the flood risk listPO4 9JR: not on the flood risk listPO4 9JS: not on the flood risk listPO4 9JT: not on the flood risk listPO4 9JX: not on the flood risk listPO4 9LE: not on the flood risk listPO4 9LF: not on the flood risk listPO4 9LH: not on the flood risk listPO4 9LL: not on the flood risk listPO4 9LU: not on the flood risk listPO4 9LZ: not on the flood risk listPO4 9ND: not on the flood risk listPO4 9NF: not on the flood risk listPO4 9NH: not on the flood risk listPO4 9NL: not on the flood risk listPO4 9NN: not on the flood risk listPO4 9NP: not on the flood risk listPO4 9NQ: not on the flood risk listPO4 9NS: not on the flood risk listPO4 9NY: not on the flood risk listPO4 9NZ: not on the flood risk listPO4 9PA: not on the flood risk listPO4 9PB: not on the flood risk listPO4 9PD: not on the flood risk listPO4 9PE: not on the flood risk listPO4 9PF: not on the flood risk listPO4 9PG: not on the flood risk listPO4 9PJ: not on the flood risk listPO4 9PN: not on the flood risk listPO4 9PR: not on the flood risk listPO4 9PS: not on the flood risk listPO4 9PT: not on the flood risk listPO4 9PU: not on the flood risk listPO4 9PW: not on the flood risk listPO4 9PX: not on the flood risk listPO4 9PZ: not on the flood risk listPO4 9QA: not on the flood risk listPO4 9QD: not on the flood risk listPO4 9QG: not on the flood risk listPO4 9QH: not on the flood risk listPO4 9QU: not on the flood risk listPO4 9QW: not on the flood risk listPO4 9QX: not on the flood risk listPO4 9QY: not on the flood risk listPO4 9QZ: not on the flood risk listPO4 9RL: not on the flood risk listPO4 9RS: not on the flood risk listPO4 9RT: not on the flood risk listPO4 9RU: not on the flood risk listPO4 9RY: not on the flood risk listPO4 9RZ: not on the flood risk listPO4 9SA: not on the flood risk listPO4 9SB: not on the flood risk listPO4 9SL: not on the flood risk listPO4 9SS: not on the flood risk listPO4 9ST: not on the flood risk listPO4 9SX: not on the flood risk listPO4 9TH: not on the flood risk listPO4 9TJ: not on the flood risk listPO4 9TL: not on the flood risk listPO4 9TS: not on the flood risk listPO4 9TT: not on the flood risk listPO4 9TX: not on the flood risk listPO4 9UA: not on the flood risk listPO4 9UB: not on the flood risk listPO4 9UE: not on the flood risk listPO4 9UF: not on the flood risk listPO4 9UG: not on the flood risk listPO4 9UQ: not on the flood risk listPO4 9WW: not on the flood risk listPO4 9XA: not on the flood risk listPO4 9XB: not on the flood risk listPO4 9XD: not on the flood risk listPO4 9XE: not on the flood risk listPO4 9XF: not on the flood risk listPO4 9XG: not on the flood risk listPO4 9XH: not on the flood risk listPO4 9XJ: not on the flood risk listPO4 9XL: not on the flood risk listPO4 9XN: not on the flood risk listPO4 9XP: not on the flood risk listPO4 9XQ: not on the flood risk listPO4 9XS: not on the flood risk listPO4 9XU: not on the flood risk listPO4 9XW: not on the flood risk listPO4 9XX: not on the flood risk listPO4 9XY: not on the flood risk listPO4 9XZ: not on the flood risk listPO4 9YA: not on the flood risk listPO4 9YB: not on the flood risk listPO4 9YD: not on the flood risk listPO4 9EH: very low flood risk onlyPO4 9GE: very low flood risk onlyPO4 9JZ: very low flood risk onlyPO4 9NX: very low flood risk onlyPO4 9RB: very low flood risk onlyPO4 9FZ: low flood risk at worstPO4 9JB: low flood risk at worstPO4 9JJ: low flood risk at worstPO4 9JL: low flood risk at worstPO4 9JY: low flood risk at worstPO4 9LR: low flood risk at worstPO4 9NR: low flood risk at worstPO4 9NT: low flood risk at worstPO4 9NU: low flood risk at worstPO4 9PH: low flood risk at worstPO4 9PL: low flood risk at worstPO4 9PP: low flood risk at worstPO4 9QB: low flood risk at worstPO4 9QE: low flood risk at worstPO4 9QN: low flood risk at worstPO4 9QP: low flood risk at worstPO4 9QR: low flood risk at worstPO4 9RP: low flood risk at worstPO4 9SU: low flood risk at worstPO4 9TD: low flood risk at worstPO4 9LT: medium flood risk at worstPO4 9QS: medium flood risk at worstPO4 9RD: medium flood risk at worstPO4 9RH: medium flood risk at worstPO4 9TF: medium flood risk at worstPO4 9AG: high flood riskPO4 9GB: high flood riskPO4 9JF: high flood riskPO4 9JQ: high flood riskPO4 9JU: high flood riskPO4 9LD: high flood riskPO4 9LG: high flood riskPO4 9LN: high flood riskPO4 9LP: high flood riskPO4 9LQ: high flood riskPO4 9LS: high flood riskPO4 9LW: high flood riskPO4 9LX: high flood riskPO4 9LY: high flood riskPO4 9QF: high flood riskPO4 9QJ: high flood riskPO4 9QL: high flood riskPO4 9RA: high flood riskPO4 9RE: high flood riskPO4 9RF: high flood riskPO4 9RG: high flood riskPO4 9RJ: high flood riskPO4 9RR: high flood riskPO4 9SJ: high flood riskPO4 9TA: high flood riskPO4 9TB: high flood riskPO4 9TE: high flood riskPO4 9UD: high flood risk Eastney and CraneswaterMilton 19 postcodes at high or medium risk, outlined: this goes to PO4 9TB, the one with most homes and businesses at high risk19 postcodes at high or medium risk7 postcodes at high or medium risk, outlined: this goes to PO4 9QJ, the one with most homes and businesses at high risk7 postcodes at high or medium risk Map of every postcode in the PO4 9 sector, by flood risk Of the 252 postcodes in the PO4 9 sector that ONS places, 28 have a home or business at high risk, 5 are at medium risk at worst, 20 are at low risk at worst, 5 are at very low risk only and 194 are not on the Environment Agency's at-risk list. 2 groups of postcodes at high or medium risk are outlined: 19 postcodes at high or medium risk; 7 postcodes at high or medium risk. Places named: Eastney and Craneswater, Milton. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. Eastney and CraneswaterMilton
  • A home or business at high risk: 28
  • At medium risk at worst: 5
  • At low risk at worst: 20
  • At very low risk only: 5
  • Not on the at-risk list: 194
  • Outline: where 5 or more postcodes at high or medium risk lie together

Of the 252 postcodes in the PO4 9 sector that ONS places, 28 have a home or business at high risk, 5 are at medium risk at worst, 20 are at low risk at worst, 5 are at very low risk only and 194 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. A dashed outline shows where 5 or more lie within 150 metres of each other. It is not a boundary, and 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

28 postcodes here have a home or business at high risk. These are the 12 with the most homes and businesses at that risk.

Beside each: how many of its homes and businesses the Environment Agency puts at that risk.

PO4 9TB101 at high riskPO4 9LQ51 at high riskPO4 9JQ38 at high riskPO4 9LS33 at high riskPO4 9LG29 at high riskPO4 9QJ18 at high riskPO4 9LN13 at high riskPO4 9QL12 at high riskPO4 9JF11 at high riskPO4 9LX11 at high riskPO4 9LY9 at high riskPO4 9RE9 at high risk

Where the postcodes at high or medium risk lie together

  • 19 postcodes at high or medium risk, outlined on the map. PO4 9TB, is the one with most homes and businesses at high risk.
  • 7 postcodes at high or medium risk, outlined on the map. PO4 9QJ, is the one with most homes and businesses at high risk.

What do homes sell for in PO4 9?

Homes in PO4 9 sold for a typical £262,500 in the 12 months to August 2026, across 187 sales, down 2.8% on the 12 months before, HM Land Registry's figures show.

£262,500 typical price, the 12 months to August 2026
£270,000 12 months to August 2025
▼ down 2.8% on the 12 months before
  • Detached 4 sales, too few to price
  • Semi-detached £380,500 14 sales
  • Terraced £263,000 139 sales
  • Flat or maisonette £164,500 30 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 PO4 9. 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 PO4 9

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.

PO4 9AAPO4 9ABPO4 9ADPO4 9AEPO4 9AFPO4 9AGPO4 9AHPO4 9AJPO4 9ALPO4 9ANPO4 9APPO4 9AQPO4 9ARPO4 9ASPO4 9ATPO4 9AUPO4 9AWPO4 9AXPO4 9AYPO4 9AZPO4 9BAPO4 9BBPO4 9BDPO4 9BEPO4 9BGPO4 9BHPO4 9BJPO4 9BLPO4 9BNPO4 9BQPO4 9BTPO4 9BUPO4 9BWPO4 9BXPO4 9BYPO4 9BZPO4 9DAPO4 9DBPO4 9DDPO4 9DEPO4 9DFPO4 9DGPO4 9DHPO4 9DJPO4 9DLPO4 9DNPO4 9DPPO4 9DQPO4 9DRPO4 9DSPO4 9DTPO4 9DUPO4 9DZPO4 9EAPO4 9EBPO4 9EDPO4 9EEPO4 9EFPO4 9EGPO4 9EHPO4 9EJPO4 9ELPO4 9ENPO4 9EPPO4 9EQPO4 9ERPO4 9ESPO4 9ETPO4 9EUPO4 9EWPO4 9EYPO4 9EZPO4 9FAPO4 9FUPO4 9FZPO4 9GAPO4 9GBPO4 9GDPO4 9GEPO4 9GFPO4 9HAPO4 9HBPO4 9HDPO4 9HGPO4 9HHPO4 9HJPO4 9HLPO4 9HNPO4 9HPPO4 9HQPO4 9HRPO4 9HSPO4 9HTPO4 9HUPO4 9HWPO4 9HXPO4 9HYPO4 9HZPO4 9JAPO4 9JBPO4 9JDPO4 9JEPO4 9JFPO4 9JGPO4 9JJPO4 9JLPO4 9JNPO4 9JPPO4 9JQPO4 9JRPO4 9JSPO4 9JTPO4 9JUPO4 9JWPO4 9JXPO4 9JYPO4 9JZPO4 9LDPO4 9LEPO4 9LFPO4 9LGPO4 9LHPO4 9LLPO4 9LNPO4 9LPPO4 9LQPO4 9LRPO4 9LSPO4 9LTPO4 9LUPO4 9LWPO4 9LXPO4 9LYPO4 9LZPO4 9NDPO4 9NFPO4 9NHPO4 9NLPO4 9NNPO4 9NPPO4 9NQPO4 9NRPO4 9NSPO4 9NTPO4 9NUPO4 9NXPO4 9NYPO4 9NZPO4 9PAPO4 9PBPO4 9PDPO4 9PEPO4 9PFPO4 9PGPO4 9PHPO4 9PJPO4 9PLPO4 9PNPO4 9PPPO4 9PRPO4 9PSPO4 9PTPO4 9PUPO4 9PWPO4 9PXPO4 9PZPO4 9QAPO4 9QBPO4 9QDPO4 9QEPO4 9QFPO4 9QGPO4 9QHPO4 9QJPO4 9QLPO4 9QNPO4 9QPPO4 9QRPO4 9QSPO4 9QUPO4 9QWPO4 9QXPO4 9QYPO4 9QZPO4 9RAPO4 9RBPO4 9RDPO4 9REPO4 9RFPO4 9RGPO4 9RHPO4 9RJPO4 9RLPO4 9RNPO4 9RPPO4 9RRPO4 9RSPO4 9RTPO4 9RUPO4 9RYPO4 9RZPO4 9SAPO4 9SBPO4 9SJPO4 9SLPO4 9SSPO4 9STPO4 9SUPO4 9SXPO4 9TAPO4 9TBPO4 9TDPO4 9TEPO4 9TFPO4 9THPO4 9TJPO4 9TLPO4 9TSPO4 9TTPO4 9TXPO4 9UAPO4 9UBPO4 9UDPO4 9UEPO4 9UFPO4 9UGPO4 9UQPO4 9WWPO4 9XAPO4 9XBPO4 9XDPO4 9XEPO4 9XFPO4 9XGPO4 9XHPO4 9XJPO4 9XLPO4 9XNPO4 9XPPO4 9XQPO4 9XRPO4 9XSPO4 9XTPO4 9XUPO4 9XWPO4 9XXPO4 9XYPO4 9XZPO4 9YAPO4 9YBPO4 9YDPO4 9YE

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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