GU3 1 postcode sector in the GU3 district

GU3 1 is a sector of the GU3 district: every postcode that starts GU3 1. It has 116 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 GU3 1 sector, by flood risk

Map of every postcode in the GU3 1 sector, by flood risk Of the 116 postcodes in the GU3 1 sector that ONS places, 5 have a home or business at high risk, 3 are at medium risk at worst, 1 are at low risk at worst and 107 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: Guildford. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. A31A3 GU3 1AA: not on the flood risk listGU3 1AB: not on the flood risk listGU3 1AD: not on the flood risk listGU3 1AE: not on the flood risk listGU3 1AH: not on the flood risk listGU3 1AJ: not on the flood risk listGU3 1AL: not on the flood risk listGU3 1AN: not on the flood risk listGU3 1AP: not on the flood risk listGU3 1AQ: not on the flood risk listGU3 1AR: not on the flood risk listGU3 1AS: not on the flood risk listGU3 1AT: not on the flood risk listGU3 1AU: not on the flood risk listGU3 1AW: not on the flood risk listGU3 1AX: not on the flood risk listGU3 1AY: not on the flood risk listGU3 1AZ: not on the flood risk listGU3 1BA: not on the flood risk listGU3 1BB: not on the flood risk listGU3 1BD: not on the flood risk listGU3 1BE: not on the flood risk listGU3 1BH: not on the flood risk listGU3 1BJ: not on the flood risk listGU3 1BN: not on the flood risk listGU3 1BQ: not on the flood risk listGU3 1DA: not on the flood risk listGU3 1DD: not on the flood risk listGU3 1DE: not on the flood risk listGU3 1DF: not on the flood risk listGU3 1DG: not on the flood risk listGU3 1DJ: not on the flood risk listGU3 1DL: not on the flood risk listGU3 1DN: not on the flood risk listGU3 1DP: not on the flood risk listGU3 1DQ: not on the flood risk listGU3 1DR: not on the flood risk listGU3 1DS: not on the flood risk listGU3 1DT: not on the flood risk listGU3 1DU: not on the flood risk listGU3 1DX: not on the flood risk listGU3 1DY: not on the flood risk listGU3 1DZ: not on the flood risk listGU3 1EA: not on the flood risk listGU3 1EB: not on the flood risk listGU3 1ED: not on the flood risk listGU3 1EE: not on the flood risk listGU3 1EF: not on the flood risk listGU3 1EG: not on the flood risk listGU3 1EH: not on the flood risk listGU3 1EJ: not on the flood risk listGU3 1EL: not on the flood risk listGU3 1EQ: not on the flood risk listGU3 1HB: not on the flood risk listGU3 1HD: not on the flood risk listGU3 1HE: not on the flood risk listGU3 1HF: not on the flood risk listGU3 1HG: not on the flood risk listGU3 1HH: not on the flood risk listGU3 1HJ: not on the flood risk listGU3 1HL: not on the flood risk listGU3 1HN: not on the flood risk listGU3 1HP: not on the flood risk listGU3 1HQ: not on the flood risk listGU3 1HR: not on the flood risk listGU3 1HS: not on the flood risk listGU3 1HT: not on the flood risk listGU3 1HU: not on the flood risk listGU3 1HW: not on the flood risk listGU3 1HY: not on the flood risk listGU3 1HZ: not on the flood risk listGU3 1JB: not on the flood risk listGU3 1JD: not on the flood risk listGU3 1JE: not on the flood risk listGU3 1JF: not on the flood risk listGU3 1JG: not on the flood risk listGU3 1JH: not on the flood risk listGU3 1JJ: not on the flood risk listGU3 1JL: not on the flood risk listGU3 1JN: not on the flood risk listGU3 1JQ: not on the flood risk listGU3 1JR: not on the flood risk listGU3 1JT: not on the flood risk listGU3 1JU: not on the flood risk listGU3 1JW: not on the flood risk listGU3 1LD: not on the flood risk listGU3 1LE: not on the flood risk listGU3 1LH: not on the flood risk listGU3 1LJ: not on the flood risk listGU3 1LN: not on the flood risk listGU3 1LP: not on the flood risk listGU3 1LR: not on the flood risk listGU3 1LS: not on the flood risk listGU3 1LT: not on the flood risk listGU3 1LU: not on the flood risk listGU3 1LX: not on the flood risk listGU3 1NE: not on the flood risk listGU3 1NF: not on the flood risk listGU3 1NG: not on the flood risk listGU3 1NQ: not on the flood risk listGU3 1BG: low flood risk at worstGU3 1JA: medium flood risk at worstGU3 1ND: medium flood risk at worstGU3 1NJ: medium flood risk at worstGU3 1AF: high flood riskGU3 1LQ: high flood riskGU3 1LZ: high flood riskGU3 1NA: high flood riskGU3 1NB: high flood risk Guildford 6 postcodes at high or medium risk, outlined: this goes to GU3 1LZ, the one with most homes and businesses at high risk6 postcodes at high or medium risk Map of every postcode in the GU3 1 sector, by flood risk Of the 116 postcodes in the GU3 1 sector that ONS places, 5 have a home or business at high risk, 3 are at medium risk at worst, 1 are at low risk at worst and 107 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: Guildford. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2 km. Guildford
  • A home or business at high risk: 5
  • At medium risk at worst: 3
  • At low risk at worst: 1
  • At very low risk only: 0
  • Not on the at-risk list: 107
  • Outline: where 5 or more postcodes at high or medium risk lie together

Of the 116 postcodes in the GU3 1 sector that ONS places, 5 have a home or business at high risk, 3 are at medium risk at worst, 1 are at low risk at worst and 107 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 320 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

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

GU3 1LZ38 at high riskGU3 1NB2 at high riskGU3 1AF1 at high riskGU3 1LQ1 at high riskGU3 1NA1 at high risk

Where the postcodes at high or medium risk lie together

  • 6 postcodes at high or medium risk, outlined on the map. GU3 1LZ, is the one with most homes and businesses at high risk.

What do homes sell for in GU3 1?

Homes in GU3 1 sold for a typical £575,000 in the 12 months to August 2026, across 10 sales, down 16.1% on the 12 months before, HM Land Registry's figures show.

£575,000 typical price, the 12 months to August 2026
£685,000 12 months to August 2025
▼ down 16.1% on the 12 months before
  • Detached 2 sales, too few to price
  • Semi-detached £550,000 5 sales
  • Terraced 3 sales, too few to price

Standard sales of homes at market value at the postcodes that start GU3 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 GU3 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.

GU3 1AAGU3 1ABGU3 1ADGU3 1AEGU3 1AFGU3 1AGGU3 1AHGU3 1AJGU3 1ALGU3 1ANGU3 1APGU3 1AQGU3 1ARGU3 1ASGU3 1ATGU3 1AUGU3 1AWGU3 1AXGU3 1AYGU3 1AZGU3 1BAGU3 1BBGU3 1BDGU3 1BEGU3 1BGGU3 1BHGU3 1BJGU3 1BLGU3 1BNGU3 1BQGU3 1DAGU3 1DDGU3 1DEGU3 1DFGU3 1DGGU3 1DJGU3 1DLGU3 1DNGU3 1DPGU3 1DQGU3 1DRGU3 1DSGU3 1DTGU3 1DUGU3 1DWGU3 1DXGU3 1DYGU3 1DZGU3 1EAGU3 1EBGU3 1EDGU3 1EEGU3 1EFGU3 1EGGU3 1EHGU3 1EJGU3 1ELGU3 1EQGU3 1HBGU3 1HDGU3 1HEGU3 1HFGU3 1HGGU3 1HHGU3 1HJGU3 1HLGU3 1HNGU3 1HPGU3 1HQGU3 1HRGU3 1HSGU3 1HTGU3 1HUGU3 1HWGU3 1HXGU3 1HYGU3 1HZGU3 1JAGU3 1JBGU3 1JDGU3 1JEGU3 1JFGU3 1JGGU3 1JHGU3 1JJGU3 1JLGU3 1JNGU3 1JQGU3 1JRGU3 1JTGU3 1JUGU3 1JWGU3 1LDGU3 1LEGU3 1LHGU3 1LJGU3 1LNGU3 1LPGU3 1LQGU3 1LRGU3 1LSGU3 1LTGU3 1LUGU3 1LXGU3 1LYGU3 1LZGU3 1NAGU3 1NBGU3 1NDGU3 1NEGU3 1NFGU3 1NGGU3 1NJGU3 1NQGU3 1YJGU3 1ZQ

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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