GU1 3 postcode sector in the GU1 district

GU1 3 is a sector of the GU1 district: every postcode that starts GU1 3. It has 192 postcodes in use, 12 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 GU1 3 sector, by flood risk

Map of every postcode in the GU1 3 sector, by flood risk Of the 192 postcodes in the GU1 3 sector that ONS places, 4 have a home or business at high risk, 5 are at medium risk at worst, 4 are at low risk at worst and 179 are not on the Environment Agency's at-risk list. One group of postcodes at high or medium risk is outlined: 6 postcodes at high or medium risk. Places named: Castle. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A281A3100 GU1 3AA: not on the flood risk listGU1 3AD: not on the flood risk listGU1 3AF: not on the flood risk listGU1 3AG: not on the flood risk listGU1 3AH: not on the flood risk listGU1 3AJ: not on the flood risk listGU1 3AP: not on the flood risk listGU1 3AW: not on the flood risk listGU1 3BB: not on the flood risk listGU1 3BJ: not on the flood risk listGU1 3BS: not on the flood risk listGU1 3BY: not on the flood risk listGU1 3DA: not on the flood risk listGU1 3DD: not on the flood risk listGU1 3DE: not on the flood risk listGU1 3DG: not on the flood risk listGU1 3DN: not on the flood risk listGU1 3DP: not on the flood risk listGU1 3DS: not on the flood risk listGU1 3DT: not on the flood risk listGU1 3EB: not on the flood risk listGU1 3ES: not on the flood risk listGU1 3EX: not on the flood risk listGU1 3EZ: not on the flood risk listGU1 3HE: not on the flood risk listGU1 3HJ: not on the flood risk listGU1 3HQ: not on the flood risk listGU1 3HW: not on the flood risk listGU1 3HX: not on the flood risk listGU1 3HZ: not on the flood risk listGU1 3JB: not on the flood risk listGU1 3JD: not on the flood risk listGU1 3JF: not on the flood risk listGU1 3JG: not on the flood risk listGU1 3JH: not on the flood risk listGU1 3JL: not on the flood risk listGU1 3JP: not on the flood risk listGU1 3JQ: not on the flood risk listGU1 3JR: not on the flood risk listGU1 3JS: not on the flood risk listGU1 3JT: not on the flood risk listGU1 3JU: not on the flood risk listGU1 3JX: not on the flood risk listGU1 3JY: not on the flood risk listGU1 3JZ: not on the flood risk listGU1 3LA: not on the flood risk listGU1 3LB: not on the flood risk listGU1 3LD: not on the flood risk listGU1 3LE: not on the flood risk listGU1 3LF: not on the flood risk listGU1 3LH: not on the flood risk listGU1 3LJ: not on the flood risk listGU1 3LL: not on the flood risk listGU1 3LN: not on the flood risk listGU1 3LP: not on the flood risk listGU1 3LQ: not on the flood risk listGU1 3LR: not on the flood risk listGU1 3LS: not on the flood risk listGU1 3LT: not on the flood risk listGU1 3LU: not on the flood risk listGU1 3LW: not on the flood risk listGU1 3LX: not on the flood risk listGU1 3LY: not on the flood risk listGU1 3LZ: not on the flood risk listGU1 3NA: not on the flood risk listGU1 3NB: not on the flood risk listGU1 3ND: not on the flood risk listGU1 3NE: not on the flood risk listGU1 3NF: not on the flood risk listGU1 3NG: not on the flood risk listGU1 3NH: not on the flood risk listGU1 3NJ: not on the flood risk listGU1 3NL: not on the flood risk listGU1 3NN: not on the flood risk listGU1 3NP: not on the flood risk listGU1 3NQ: not on the flood risk listGU1 3NR: not on the flood risk listGU1 3NS: not on the flood risk listGU1 3NU: not on the flood risk listGU1 3NW: not on the flood risk listGU1 3PA: not on the flood risk listGU1 3PB: not on the flood risk listGU1 3PE: not on the flood risk listGU1 3PF: not on the flood risk listGU1 3PG: not on the flood risk listGU1 3PH: not on the flood risk listGU1 3PJ: not on the flood risk listGU1 3PL: not on the flood risk listGU1 3PN: not on the flood risk listGU1 3PP: not on the flood risk listGU1 3PQ: not on the flood risk listGU1 3PS: not on the flood risk listGU1 3PT: not on the flood risk listGU1 3PU: not on the flood risk listGU1 3PW: not on the flood risk listGU1 3PX: not on the flood risk listGU1 3PY: not on the flood risk listGU1 3PZ: not on the flood risk listGU1 3QA: not on the flood risk listGU1 3QB: not on the flood risk listGU1 3QD: not on the flood risk listGU1 3QE: not on the flood risk listGU1 3QF: not on the flood risk listGU1 3QG: not on the flood risk listGU1 3QH: not on the flood risk listGU1 3QJ: not on the flood risk listGU1 3QL: not on the flood risk listGU1 3QP: not on the flood risk listGU1 3QQ: not on the flood risk listGU1 3QS: not on the flood risk listGU1 3QT: not on the flood risk listGU1 3QW: not on the flood risk listGU1 3QY: not on the flood risk listGU1 3RJ: not on the flood risk listGU1 3RP: not on the flood risk listGU1 3RR: not on the flood risk listGU1 3RT: not on the flood risk listGU1 3RU: not on the flood risk listGU1 3RW: not on the flood risk listGU1 3RX: not on the flood risk listGU1 3RY: not on the flood risk listGU1 3RZ: not on the flood risk listGU1 3SA: not on the flood risk listGU1 3SB: not on the flood risk listGU1 3SD: not on the flood risk listGU1 3SE: not on the flood risk listGU1 3SF: not on the flood risk listGU1 3SG: not on the flood risk listGU1 3SH: not on the flood risk listGU1 3SJ: not on the flood risk listGU1 3SL: not on the flood risk listGU1 3SN: not on the flood risk listGU1 3SP: not on the flood risk listGU1 3SQ: not on the flood risk listGU1 3SR: not on the flood risk listGU1 3ST: not on the flood risk listGU1 3SW: not on the flood risk listGU1 3SX: not on the flood risk listGU1 3SY: not on the flood risk listGU1 3SZ: not on the flood risk listGU1 3TA: not on the flood risk listGU1 3TB: not on the flood risk listGU1 3TD: not on the flood risk listGU1 3TE: not on the flood risk listGU1 3TF: not on the flood risk listGU1 3TG: not on the flood risk listGU1 3TH: not on the flood risk listGU1 3TJ: not on the flood risk listGU1 3TL: not on the flood risk listGU1 3TN: not on the flood risk listGU1 3TP: not on the flood risk listGU1 3TQ: not on the flood risk listGU1 3TR: not on the flood risk listGU1 3TS: not on the flood risk listGU1 3TU: not on the flood risk listGU1 3TW: not on the flood risk listGU1 3TX: not on the flood risk listGU1 3TY: not on the flood risk listGU1 3UA: not on the flood risk listGU1 3UH: not on the flood risk listGU1 3UL: not on the flood risk listGU1 3UP: not on the flood risk listGU1 3UQ: not on the flood risk listGU1 3UR: not on the flood risk listGU1 3UW: not on the flood risk listGU1 3XD: not on the flood risk listGU1 3XN: not on the flood risk listGU1 3XP: not on the flood risk listGU1 3XR: not on the flood risk listGU1 3XS: not on the flood risk listGU1 3XT: not on the flood risk listGU1 3XU: not on the flood risk listGU1 3XW: not on the flood risk listGU1 3XX: not on the flood risk listGU1 3XY: not on the flood risk listGU1 3XZ: not on the flood risk listGU1 3AU: low flood risk at worstGU1 3UT: low flood risk at worstGU1 3UY: low flood risk at worstGU1 3YA: low flood risk at worstGU1 3BT: medium flood risk at worstGU1 3DY: medium flood risk at worstGU1 3EG: medium flood risk at worstGU1 3EL: medium flood risk at worstGU1 3TZ: medium flood risk at worstGU1 3UX: high flood riskGU1 3XJ: high flood riskGU1 3XL: high flood riskGU1 3XQ: high flood risk Castle 6 postcodes at high or medium risk, outlined: this goes to GU1 3UX, the one with most homes and businesses at high risk6 postcodes at high or medium risk Map of every postcode in the GU1 3 sector, by flood risk Of the 192 postcodes in the GU1 3 sector that ONS places, 4 have a home or business at high risk, 5 are at medium risk at worst, 4 are at low risk at worst and 179 are not on the Environment Agency's at-risk list. One group of postcodes at high or medium risk is outlined: 6 postcodes at high or medium risk. Places named: Castle. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. Castle
  • A home or business at high risk: 4
  • At medium risk at worst: 5
  • At low risk at worst: 4
  • At very low risk only: 0
  • Not on the at-risk list: 179
  • Outline: where 5 or more postcodes at high or medium risk lie together

Of the 192 postcodes in the GU1 3 sector that ONS places, 4 have a home or business at high risk, 5 are at medium risk at worst, 4 are at low risk at worst and 179 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

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

GU1 3UX7 at high riskGU1 3XJ7 at high riskGU1 3XL1 at high riskGU1 3XQ1 at high risk

Where the postcodes at high or medium risk lie together

  • 6 postcodes at high or medium risk, outlined on the map. GU1 3UX, is the one with most homes and businesses at high risk.

What do homes sell for in GU1 3?

Homes in GU1 3 sold for a typical £662,000 in the 12 months to August 2026, across 71 sales, up 31.1% on the 12 months before, HM Land Registry's figures show.

£662,000 typical price, the 12 months to August 2026
£505,000 12 months to August 2025
▲ up 31.1% on the 12 months before
  • Detached £1,500,000 19 sales
  • Semi-detached £700,000 19 sales
  • Terraced £625,000 7 sales
  • Flat or maisonette £298,500 26 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 GU1 3. 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 GU1 3

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.

GU1 3AAGU1 3ADGU1 3AFGU1 3AGGU1 3AHGU1 3AJGU1 3APGU1 3AUGU1 3AWGU1 3BBGU1 3BJGU1 3BLGU1 3BSGU1 3BTGU1 3BYGU1 3DAGU1 3DDGU1 3DEGU1 3DGGU1 3DNGU1 3DPGU1 3DSGU1 3DTGU1 3DYGU1 3EBGU1 3EGGU1 3ELGU1 3ESGU1 3EXGU1 3EZGU1 3HEGU1 3HJGU1 3HQGU1 3HWGU1 3HXGU1 3HZGU1 3JBGU1 3JDGU1 3JFGU1 3JGGU1 3JHGU1 3JLGU1 3JPGU1 3JQGU1 3JRGU1 3JSGU1 3JTGU1 3JUGU1 3JXGU1 3JYGU1 3JZGU1 3LAGU1 3LBGU1 3LDGU1 3LEGU1 3LFGU1 3LHGU1 3LJGU1 3LLGU1 3LNGU1 3LPGU1 3LQGU1 3LRGU1 3LSGU1 3LTGU1 3LUGU1 3LWGU1 3LXGU1 3LYGU1 3LZGU1 3NAGU1 3NBGU1 3NDGU1 3NEGU1 3NFGU1 3NGGU1 3NHGU1 3NJGU1 3NLGU1 3NNGU1 3NPGU1 3NQGU1 3NRGU1 3NSGU1 3NUGU1 3NWGU1 3NXGU1 3PAGU1 3PBGU1 3PEGU1 3PFGU1 3PGGU1 3PHGU1 3PJGU1 3PLGU1 3PNGU1 3PPGU1 3PQGU1 3PSGU1 3PTGU1 3PUGU1 3PWGU1 3PXGU1 3PYGU1 3PZGU1 3QAGU1 3QBGU1 3QDGU1 3QEGU1 3QFGU1 3QGGU1 3QHGU1 3QJGU1 3QLGU1 3QPGU1 3QQGU1 3QSGU1 3QTGU1 3QWGU1 3QYGU1 3RJGU1 3RPGU1 3RRGU1 3RTGU1 3RUGU1 3RWGU1 3RXGU1 3RYGU1 3RZGU1 3SAGU1 3SBGU1 3SDGU1 3SEGU1 3SFGU1 3SGGU1 3SHGU1 3SJGU1 3SLGU1 3SNGU1 3SPGU1 3SQGU1 3SRGU1 3STGU1 3SWGU1 3SXGU1 3SYGU1 3SZGU1 3TAGU1 3TBGU1 3TDGU1 3TEGU1 3TFGU1 3TGGU1 3THGU1 3TJGU1 3TLGU1 3TNGU1 3TPGU1 3TQGU1 3TRGU1 3TSGU1 3TUGU1 3TWGU1 3TXGU1 3TYGU1 3TZGU1 3UAGU1 3UHGU1 3ULGU1 3UPGU1 3UQGU1 3URGU1 3UTGU1 3UWGU1 3UXGU1 3UYGU1 3XDGU1 3XJGU1 3XLGU1 3XNGU1 3XPGU1 3XQGU1 3XRGU1 3XSGU1 3XTGU1 3XUGU1 3XWGU1 3XXGU1 3XYGU1 3XZGU1 3YAGU1 3YU

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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