PO3 5 postcode sector in the PO3 district

PO3 5 is a sector of the PO3 district: every postcode that starts PO3 5. It has 254 postcodes in use, 26 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 PO3 5 sector, by flood risk

Map of every postcode in the PO3 5 sector, by flood risk Of the 254 postcodes in the PO3 5 sector that ONS places, 36 have a home or business at high risk, 21 are at medium risk at worst, 59 are at low risk at worst, 58 are at very low risk only and 80 are not on the Environment Agency's at-risk list. 3 groups of postcodes at high or medium risk are outlined: 24 postcodes at high or medium risk; 10 postcodes at high or medium risk; 9 postcodes at high or medium risk. Places named: Portsmouth. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. M275A27A2030A288 PO3 5AA: not on the flood risk listPO3 5AB: not on the flood risk listPO3 5AD: not on the flood risk listPO3 5AF: not on the flood risk listPO3 5AG: not on the flood risk listPO3 5AH: not on the flood risk listPO3 5AJ: not on the flood risk listPO3 5AL: not on the flood risk listPO3 5AN: not on the flood risk listPO3 5AP: not on the flood risk listPO3 5AQ: not on the flood risk listPO3 5AR: not on the flood risk listPO3 5AS: not on the flood risk listPO3 5AT: not on the flood risk listPO3 5AU: not on the flood risk listPO3 5AW: not on the flood risk listPO3 5AX: not on the flood risk listPO3 5AY: not on the flood risk listPO3 5BA: not on the flood risk listPO3 5BB: not on the flood risk listPO3 5BD: not on the flood risk listPO3 5BE: not on the flood risk listPO3 5BG: not on the flood risk listPO3 5BH: not on the flood risk listPO3 5BQ: not on the flood risk listPO3 5BS: not on the flood risk listPO3 5BT: not on the flood risk listPO3 5BW: not on the flood risk listPO3 5BX: not on the flood risk listPO3 5BY: not on the flood risk listPO3 5BZ: not on the flood risk listPO3 5DA: not on the flood risk listPO3 5DB: not on the flood risk listPO3 5DD: not on the flood risk listPO3 5DE: not on the flood risk listPO3 5DF: not on the flood risk listPO3 5DG: not on the flood risk listPO3 5DH: not on the flood risk listPO3 5DJ: not on the flood risk listPO3 5DL: not on the flood risk listPO3 5DN: not on the flood risk listPO3 5DP: not on the flood risk listPO3 5DR: not on the flood risk listPO3 5DS: not on the flood risk listPO3 5DT: not on the flood risk listPO3 5DU: not on the flood risk listPO3 5EE: not on the flood risk listPO3 5EF: not on the flood risk listPO3 5EG: not on the flood risk listPO3 5EL: not on the flood risk listPO3 5EN: not on the flood risk listPO3 5EQ: not on the flood risk listPO3 5ET: not on the flood risk listPO3 5EU: not on the flood risk listPO3 5EX: not on the flood risk listPO3 5EY: not on the flood risk listPO3 5EZ: not on the flood risk listPO3 5FG: not on the flood risk listPO3 5FJ: not on the flood risk listPO3 5FL: not on the flood risk listPO3 5FN: not on the flood risk listPO3 5FR: not on the flood risk listPO3 5GA: not on the flood risk listPO3 5GR: not on the flood risk listPO3 5HB: not on the flood risk listPO3 5HD: not on the flood risk listPO3 5HE: not on the flood risk listPO3 5HG: not on the flood risk listPO3 5LL: not on the flood risk listPO3 5NQ: not on the flood risk listPO3 5RW: not on the flood risk listPO3 5SJ: not on the flood risk listPO3 5SX: not on the flood risk listPO3 5TH: not on the flood risk listPO3 5BJ: very low flood risk onlyPO3 5BL: very low flood risk onlyPO3 5BN: very low flood risk onlyPO3 5BP: very low flood risk onlyPO3 5BU: very low flood risk onlyPO3 5EP: very low flood risk onlyPO3 5ES: very low flood risk onlyPO3 5FE: very low flood risk onlyPO3 5FP: very low flood risk onlyPO3 5FT: very low flood risk onlyPO3 5FU: very low flood risk onlyPO3 5FX: very low flood risk onlyPO3 5GE: very low flood risk onlyPO3 5GQ: very low flood risk onlyPO3 5JH: very low flood risk onlyPO3 5JS: very low flood risk onlyPO3 5JW: very low flood risk onlyPO3 5LB: very low flood risk onlyPO3 5LP: very low flood risk onlyPO3 5NA: very low flood risk onlyPO3 5NB: very low flood risk onlyPO3 5NH: very low flood risk onlyPO3 5NJ: very low flood risk onlyPO3 5NN: very low flood risk onlyPO3 5PE: very low flood risk onlyPO3 5PF: very low flood risk onlyPO3 5PL: very low flood risk onlyPO3 5PR: very low flood risk onlyPO3 5PS: very low flood risk onlyPO3 5QD: very low flood risk onlyPO3 5QN: very low flood risk onlyPO3 5QR: very low flood risk onlyPO3 5QW: very low flood risk onlyPO3 5RF: very low flood risk onlyPO3 5RJ: very low flood risk onlyPO3 5RQ: very low flood risk onlyPO3 5RR: very low flood risk onlyPO3 5RS: very low flood risk onlyPO3 5RU: very low flood risk onlyPO3 5RX: very low flood risk onlyPO3 5SA: very low flood risk onlyPO3 5SH: very low flood risk onlyPO3 5SL: very low flood risk onlyPO3 5SP: very low flood risk onlyPO3 5TU: very low flood risk onlyPO3 5TY: very low flood risk onlyPO3 5UT: very low flood risk onlyPO3 5UW: very low flood risk onlyPO3 5XF: very low flood risk onlyPO3 5XG: very low flood risk onlyPO3 5XH: very low flood risk onlyPO3 5XQ: very low flood risk onlyPO3 5XR: very low flood risk onlyPO3 5XX: very low flood risk onlyPO3 5YB: very low flood risk onlyPO3 5DX: low flood risk at worstPO3 5DY: low flood risk at worstPO3 5DZ: low flood risk at worstPO3 5EH: low flood risk at worstPO3 5EJ: low flood risk at worstPO3 5ER: low flood risk at worstPO3 5EW: low flood risk at worstPO3 5FF: low flood risk at worstPO3 5FS: low flood risk at worstPO3 5FY: low flood risk at worstPO3 5FZ: low flood risk at worstPO3 5GD: low flood risk at worstPO3 5HJ: low flood risk at worstPO3 5HL: low flood risk at worstPO3 5HS: low flood risk at worstPO3 5HT: low flood risk at worstPO3 5HX: low flood risk at worstPO3 5HY: low flood risk at worstPO3 5HZ: low flood risk at worstPO3 5JA: low flood risk at worstPO3 5JB: low flood risk at worstPO3 5JD: low flood risk at worstPO3 5JE: low flood risk at worstPO3 5JF: low flood risk at worstPO3 5JP: low flood risk at worstPO3 5JT: low flood risk at worstPO3 5JZ: low flood risk at worstPO3 5LA: low flood risk at worstPO3 5LD: low flood risk at worstPO3 5LE: low flood risk at worstPO3 5LF: low flood risk at worstPO3 5LG: low flood risk at worstPO3 5LN: low flood risk at worstPO3 5LR: low flood risk at worstPO3 5LS: low flood risk at worstPO3 5LT: low flood risk at worstPO3 5LU: low flood risk at worstPO3 5LW: low flood risk at worstPO3 5LX: low flood risk at worstPO3 5PQ: low flood risk at worstPO3 5PJ: low flood risk at worstPO3 5PU: low flood risk at worstPO3 5QY: low flood risk at worstPO3 5QZ: low flood risk at worstPO3 5TA: low flood risk at worstPO3 5TN: low flood risk at worstPO3 5TW: low flood risk at worstPO3 5TX: low flood risk at worstPO3 5TZ: low flood risk at worstPO3 5UB: low flood risk at worstPO3 5UH: low flood risk at worstPO3 5UJ: low flood risk at worstPO3 5UN: low flood risk at worstPO3 5UR: low flood risk at worstPO3 5UU: low flood risk at worstPO3 5UX: low flood risk at worstPO3 5XE: low flood risk at worstPO3 5XU: low flood risk at worstPO3 5GP: medium flood risk at worstPO3 5NU: medium flood risk at worstPO3 5RA: medium flood risk at worstPO3 5TB: medium flood risk at worstPO3 5TE: medium flood risk at worstPO3 5TJ: medium flood risk at worstPO3 5TL: medium flood risk at worstPO3 5TP: medium flood risk at worstPO3 5TR: medium flood risk at worstPO3 5TS: medium flood risk at worstPO3 5UA: medium flood risk at worstPO3 5UD: medium flood risk at worstPO3 5UE: medium flood risk at worstPO3 5UF: medium flood risk at worstPO3 5UG: medium flood risk at worstPO3 5UQ: medium flood risk at worstPO3 5US: medium flood risk at worstPO3 5UZ: medium flood risk at worstPO3 5XA: medium flood risk at worstPO3 5XB: medium flood risk at worstPO3 5XD: medium flood risk at worstPO3 5FH: high flood riskPO3 5HH: high flood riskPO3 5HU: high flood riskPO3 5JJ: high flood riskPO3 5LY: high flood riskPO3 5LZ: high flood riskPO3 5ND: high flood riskPO3 5NL: high flood riskPO3 5NP: high flood riskPO3 5NR: high flood riskPO3 5NS: high flood riskPO3 5NX: high flood riskPO3 5NY: high flood riskPO3 5PA: high flood riskPO3 5QA: high flood riskPO3 5QG: high flood riskPO3 5QH: high flood riskPO3 5QL: high flood riskPO3 5QP: high flood riskPO3 5QQ: high flood riskPO3 5QS: high flood riskPO3 5QT: high flood riskPO3 5RB: high flood riskPO3 5RD: high flood riskPO3 5RN: high flood riskPO3 5RY: high flood riskPO3 5RZ: high flood riskPO3 5SD: high flood riskPO3 5SF: high flood riskPO3 5TF: high flood riskPO3 5TG: high flood riskPO3 5TQ: high flood riskPO3 5UL: high flood riskPO3 5UP: high flood riskPO3 5UY: high flood riskPO3 5XT: high flood risk Portsmouth 24 postcodes at high or medium risk, outlined: this goes to PO3 5UL, the one with most homes and businesses at high risk24 postcodes at high or medium risk10 postcodes at high or medium risk, outlined: this goes to PO3 5NX, the one with most homes and businesses at high risk10 postcodes at high or medium risk9 postcodes at high or medium risk, outlined: this goes to PO3 5QT, the one with most homes and businesses at high risk9 postcodes at high or medium risk Map of every postcode in the PO3 5 sector, by flood risk Of the 254 postcodes in the PO3 5 sector that ONS places, 36 have a home or business at high risk, 21 are at medium risk at worst, 59 are at low risk at worst, 58 are at very low risk only and 80 are not on the Environment Agency's at-risk list. 3 groups of postcodes at high or medium risk are outlined: 24 postcodes at high or medium risk; 10 postcodes at high or medium risk; 9 postcodes at high or medium risk. Places named: Portsmouth. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. A3A2047A27 Portsmouth
  • A home or business at high risk: 36
  • At medium risk at worst: 21
  • At low risk at worst: 59
  • At very low risk only: 58
  • Not on the at-risk list: 80
  • Outline: where 5 or more postcodes at high or medium risk lie together

Of the 254 postcodes in the PO3 5 sector that ONS places, 36 have a home or business at high risk, 21 are at medium risk at worst, 59 are at low risk at worst, 58 are at very low risk only and 80 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.

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

36 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.

PO3 5QT42 at high riskPO3 5NX19 at high riskPO3 5RY18 at high riskPO3 5QL16 at high riskPO3 5UL15 at high riskPO3 5QP15 at high riskPO3 5RB14 at high riskPO3 5RZ14 at high riskPO3 5HH13 at high riskPO3 5ND11 at high riskPO3 5QQ10 at high riskPO3 5NS10 at high risk

Where the postcodes at high or medium risk lie together

  • 24 postcodes at high or medium risk, outlined on the map. PO3 5UL, is the one with most homes and businesses at high risk.
  • 10 postcodes at high or medium risk, outlined on the map. PO3 5NX, is the one with most homes and businesses at high risk.
  • 9 postcodes at high or medium risk, outlined on the map. PO3 5QT, is the one with most homes and businesses at high risk.

What do homes sell for in PO3 5?

Homes in PO3 5 sold for a typical £260,000 in the 12 months to August 2026, across 123 sales, up 0.6% on the 12 months before, HM Land Registry's figures show.

£260,000 typical price, the 12 months to August 2026
£258,500 12 months to August 2025
▲ up 0.6% on the 12 months before
  • Detached £385,000 9 sales
  • Semi-detached £252,000 17 sales
  • Terraced £266,250 82 sales
  • Flat or maisonette £155,000 15 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 PO3 5. 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 PO3 5

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.

PO3 5AAPO3 5ABPO3 5ADPO3 5AFPO3 5AGPO3 5AHPO3 5AJPO3 5ALPO3 5ANPO3 5APPO3 5AQPO3 5ARPO3 5ASPO3 5ATPO3 5AUPO3 5AWPO3 5AXPO3 5AYPO3 5BAPO3 5BBPO3 5BDPO3 5BEPO3 5BGPO3 5BHPO3 5BJPO3 5BLPO3 5BNPO3 5BPPO3 5BQPO3 5BSPO3 5BTPO3 5BUPO3 5BWPO3 5BXPO3 5BYPO3 5BZPO3 5DAPO3 5DBPO3 5DDPO3 5DEPO3 5DFPO3 5DGPO3 5DHPO3 5DJPO3 5DLPO3 5DNPO3 5DPPO3 5DRPO3 5DSPO3 5DTPO3 5DUPO3 5DXPO3 5DYPO3 5DZPO3 5EEPO3 5EFPO3 5EGPO3 5EHPO3 5EJPO3 5ELPO3 5ENPO3 5EPPO3 5EQPO3 5ERPO3 5ESPO3 5ETPO3 5EUPO3 5EWPO3 5EXPO3 5EYPO3 5EZPO3 5FEPO3 5FFPO3 5FGPO3 5FHPO3 5FJPO3 5FLPO3 5FNPO3 5FPPO3 5FRPO3 5FSPO3 5FTPO3 5FUPO3 5FXPO3 5FYPO3 5FZPO3 5GAPO3 5GDPO3 5GEPO3 5GFPO3 5GGPO3 5GPPO3 5GQPO3 5GRPO3 5HBPO3 5HDPO3 5HEPO3 5HGPO3 5HHPO3 5HJPO3 5HLPO3 5HSPO3 5HTPO3 5HUPO3 5HXPO3 5HYPO3 5HZPO3 5JAPO3 5JBPO3 5JDPO3 5JEPO3 5JFPO3 5JHPO3 5JJPO3 5JPPO3 5JSPO3 5JTPO3 5JWPO3 5JZPO3 5LAPO3 5LBPO3 5LDPO3 5LEPO3 5LFPO3 5LGPO3 5LLPO3 5LNPO3 5LPPO3 5LRPO3 5LSPO3 5LTPO3 5LUPO3 5LWPO3 5LXPO3 5LYPO3 5LZPO3 5NAPO3 5NBPO3 5NDPO3 5NHPO3 5NJPO3 5NLPO3 5NNPO3 5NPPO3 5NQPO3 5NRPO3 5NSPO3 5NUPO3 5NXPO3 5NYPO3 5PAPO3 5PBPO3 5PDPO3 5PEPO3 5PFPO3 5PJPO3 5PLPO3 5PQPO3 5PRPO3 5PSPO3 5PUPO3 5QAPO3 5QDPO3 5QGPO3 5QHPO3 5QLPO3 5QNPO3 5QPPO3 5QQPO3 5QRPO3 5QSPO3 5QTPO3 5QWPO3 5QYPO3 5QZPO3 5RAPO3 5RBPO3 5RDPO3 5RFPO3 5RJPO3 5RNPO3 5RQPO3 5RRPO3 5RSPO3 5RUPO3 5RWPO3 5RXPO3 5RYPO3 5RZPO3 5SAPO3 5SDPO3 5SFPO3 5SHPO3 5SJPO3 5SLPO3 5SPPO3 5SXPO3 5TAPO3 5TBPO3 5TEPO3 5TFPO3 5TGPO3 5THPO3 5TJPO3 5TLPO3 5TNPO3 5TPPO3 5TQPO3 5TRPO3 5TSPO3 5TTPO3 5TUPO3 5TWPO3 5TXPO3 5TYPO3 5TZPO3 5UAPO3 5UBPO3 5UDPO3 5UEPO3 5UFPO3 5UGPO3 5UHPO3 5UJPO3 5ULPO3 5UNPO3 5UPPO3 5UQPO3 5URPO3 5USPO3 5UTPO3 5UUPO3 5UWPO3 5UXPO3 5UYPO3 5UZPO3 5WWPO3 5WYPO3 5XAPO3 5XBPO3 5XDPO3 5XEPO3 5XFPO3 5XGPO3 5XHPO3 5XQPO3 5XRPO3 5XSPO3 5XTPO3 5XUPO3 5XXPO3 5YBPO3 5YJPO3 5YN

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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