KT12 3 postcode sector in the KT12 district

KT12 3 is a sector of the KT12 district: every postcode that starts KT12 3. It has 191 postcodes in use, 6 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 KT12 3 sector, by flood risk

Map of every postcode in the KT12 3 sector, by flood risk Of the 191 postcodes in the KT12 3 sector that ONS places, 11 have a home or business at high risk, 21 are at medium risk at worst, 42 are at low risk at worst and 117 are not on the Environment Agency's at-risk list. One group of postcodes at high or medium risk is outlined: 28 postcodes at high or medium risk. Places named: Walton-on-Thames. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. KT12 3AA: not on the flood risk listKT12 3AB: not on the flood risk listKT12 3AD: not on the flood risk listKT12 3AE: not on the flood risk listKT12 3AF: not on the flood risk listKT12 3AG: not on the flood risk listKT12 3AH: not on the flood risk listKT12 3AJ: not on the flood risk listKT12 3AL: not on the flood risk listKT12 3AN: not on the flood risk listKT12 3AQ: not on the flood risk listKT12 3AW: not on the flood risk listKT12 3BF: not on the flood risk listKT12 3BG: not on the flood risk listKT12 3BH: not on the flood risk listKT12 3BP: not on the flood risk listKT12 3BQ: not on the flood risk listKT12 3BS: not on the flood risk listKT12 3BT: not on the flood risk listKT12 3BW: not on the flood risk listKT12 3BX: not on the flood risk listKT12 3BY: not on the flood risk listKT12 3BZ: not on the flood risk listKT12 3DA: not on the flood risk listKT12 3DB: not on the flood risk listKT12 3DD: not on the flood risk listKT12 3DF: not on the flood risk listKT12 3DG: not on the flood risk listKT12 3DH: not on the flood risk listKT12 3DJ: not on the flood risk listKT12 3DL: not on the flood risk listKT12 3DN: not on the flood risk listKT12 3DP: not on the flood risk listKT12 3DQ: not on the flood risk listKT12 3DW: not on the flood risk listKT12 3DX: not on the flood risk listKT12 3DZ: not on the flood risk listKT12 3EE: not on the flood risk listKT12 3EF: not on the flood risk listKT12 3EH: not on the flood risk listKT12 3EN: not on the flood risk listKT12 3EP: not on the flood risk listKT12 3ER: not on the flood risk listKT12 3ET: not on the flood risk listKT12 3EU: not on the flood risk listKT12 3EW: not on the flood risk listKT12 3EX: not on the flood risk listKT12 3EY: not on the flood risk listKT12 3EZ: not on the flood risk listKT12 3FA: not on the flood risk listKT12 3HA: not on the flood risk listKT12 3HB: not on the flood risk listKT12 3HD: not on the flood risk listKT12 3HE: not on the flood risk listKT12 3HF: not on the flood risk listKT12 3HG: not on the flood risk listKT12 3HH: not on the flood risk listKT12 3HN: not on the flood risk listKT12 3HP: not on the flood risk listKT12 3HS: not on the flood risk listKT12 3HT: not on the flood risk listKT12 3HU: not on the flood risk listKT12 3HX: not on the flood risk listKT12 3HY: not on the flood risk listKT12 3HZ: not on the flood risk listKT12 3JA: not on the flood risk listKT12 3JB: not on the flood risk listKT12 3JD: not on the flood risk listKT12 3JE: not on the flood risk listKT12 3JG: not on the flood risk listKT12 3JH: not on the flood risk listKT12 3JJ: not on the flood risk listKT12 3JL: not on the flood risk listKT12 3JN: not on the flood risk listKT12 3JP: not on the flood risk listKT12 3JT: not on the flood risk listKT12 3JU: not on the flood risk listKT12 3JW: not on the flood risk listKT12 3JX: not on the flood risk listKT12 3JY: not on the flood risk listKT12 3JZ: not on the flood risk listKT12 3LA: not on the flood risk listKT12 3LB: not on the flood risk listKT12 3LD: not on the flood risk listKT12 3LE: not on the flood risk listKT12 3LT: not on the flood risk listKT12 3LY: not on the flood risk listKT12 3LZ: not on the flood risk listKT12 3NB: not on the flood risk listKT12 3ND: not on the flood risk listKT12 3NE: not on the flood risk listKT12 3NF: not on the flood risk listKT12 3NJ: not on the flood risk listKT12 3NN: not on the flood risk listKT12 3NS: not on the flood risk listKT12 3NT: not on the flood risk listKT12 3NU: not on the flood risk listKT12 3NY: not on the flood risk listKT12 3PA: not on the flood risk listKT12 3PB: not on the flood risk listKT12 3PD: not on the flood risk listKT12 3PE: not on the flood risk listKT12 3PG: not on the flood risk listKT12 3PL: not on the flood risk listKT12 3PU: not on the flood risk listKT12 3QG: not on the flood risk listKT12 3SA: not on the flood risk listKT12 3SB: not on the flood risk listKT12 3SD: not on the flood risk listKT12 3SE: not on the flood risk listKT12 3SH: not on the flood risk listKT12 3SJ: not on the flood risk listKT12 3SL: not on the flood risk listKT12 3SQ: not on the flood risk listKT12 3XE: not on the flood risk listKT12 3AR: low flood risk at worstKT12 3AX: low flood risk at worstKT12 3BA: low flood risk at worstKT12 3BE: low flood risk at worstKT12 3DR: low flood risk at worstKT12 3DS: low flood risk at worstKT12 3DU: low flood risk at worstKT12 3EG: low flood risk at worstKT12 3EL: low flood risk at worstKT12 3EQ: low flood risk at worstKT12 3ES: low flood risk at worstKT12 3LS: low flood risk at worstKT12 3NG: low flood risk at worstKT12 3NH: low flood risk at worstKT12 3NQ: low flood risk at worstKT12 3PH: low flood risk at worstKT12 3PN: low flood risk at worstKT12 3PW: low flood risk at worstKT12 3QD: low flood risk at worstKT12 3QH: low flood risk at worstKT12 3QJ: low flood risk at worstKT12 3QL: low flood risk at worstKT12 3QN: low flood risk at worstKT12 3QP: low flood risk at worstKT12 3QR: low flood risk at worstKT12 3QS: low flood risk at worstKT12 3QT: low flood risk at worstKT12 3QU: low flood risk at worstKT12 3QW: low flood risk at worstKT12 3QX: low flood risk at worstKT12 3QY: low flood risk at worstKT12 3QZ: low flood risk at worstKT12 3RB: low flood risk at worstKT12 3RD: low flood risk at worstKT12 3RG: low flood risk at worstKT12 3RH: low flood risk at worstKT12 3RJ: low flood risk at worstKT12 3RL: low flood risk at worstKT12 3RN: low flood risk at worstKT12 3RP: low flood risk at worstKT12 3RQ: low flood risk at worstKT12 3RX: low flood risk at worstKT12 3AP: medium flood risk at worstKT12 3AS: medium flood risk at worstKT12 3AT: medium flood risk at worstKT12 3AY: medium flood risk at worstKT12 3AZ: medium flood risk at worstKT12 3BD: medium flood risk at worstKT12 3DT: medium flood risk at worstKT12 3EJ: medium flood risk at worstKT12 3LF: medium flood risk at worstKT12 3LN: medium flood risk at worstKT12 3LP: medium flood risk at worstKT12 3LQ: medium flood risk at worstKT12 3LR: medium flood risk at worstKT12 3LU: medium flood risk at worstKT12 3LW: medium flood risk at worstKT12 3NX: medium flood risk at worstKT12 3PF: medium flood risk at worstKT12 3PP: medium flood risk at worstKT12 3RE: medium flood risk at worstKT12 3RY: medium flood risk at worstKT12 3TD: medium flood risk at worstKT12 3AU: high flood riskKT12 3BB: high flood riskKT12 3BJ: high flood riskKT12 3BL: high flood riskKT12 3EA: high flood riskKT12 3EB: high flood riskKT12 3FD: high flood riskKT12 3FE: high flood riskKT12 3JQ: high flood riskKT12 3LG: high flood riskKT12 3LJ: high flood risk Walton-on-Thames 28 postcodes at high or medium risk, outlined: this goes to KT12 3FD, the one with most homes and businesses at high risk28 postcodes at high or medium risk Map of every postcode in the KT12 3 sector, by flood risk Of the 191 postcodes in the KT12 3 sector that ONS places, 11 have a home or business at high risk, 21 are at medium risk at worst, 42 are at low risk at worst and 117 are not on the Environment Agency's at-risk list. One group of postcodes at high or medium risk is outlined: 28 postcodes at high or medium risk. Places named: Walton-on-Thames. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. Walton-on-Thames
  • A home or business at high risk: 11
  • At medium risk at worst: 21
  • At low risk at worst: 42
  • At very low risk only: 0
  • Not on the at-risk list: 117
  • Outline: where 5 or more postcodes at high or medium risk lie together

Of the 191 postcodes in the KT12 3 sector that ONS places, 11 have a home or business at high risk, 21 are at medium risk at worst, 42 are at low risk at worst and 117 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

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

KT12 3FD51 at high riskKT12 3FE37 at high riskKT12 3LJ35 at high riskKT12 3EA9 at high riskKT12 3EB6 at high riskKT12 3BJ4 at high riskKT12 3BB2 at high riskKT12 3AU1 at high riskKT12 3BL1 at high riskKT12 3LG1 at high riskKT12 3JQ1 at high risk

Where the postcodes at high or medium risk lie together

  • 28 postcodes at high or medium risk, outlined on the map. KT12 3FD, is the one with most homes and businesses at high risk.

What do homes sell for in KT12 3?

Homes in KT12 3 sold for a typical £512,500 in the 12 months to August 2026, across 82 sales, down 12.9% on the 12 months before, HM Land Registry's figures show.

£512,500 typical price, the 12 months to August 2026
£588,500 12 months to August 2025
▼ down 12.9% on the 12 months before
  • Detached £1,050,000 15 sales
  • Semi-detached £750,000 21 sales
  • Terraced £467,000 25 sales
  • Flat or maisonette £320,000 21 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 KT12 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 KT12 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.

KT12 3AAKT12 3ABKT12 3ADKT12 3AEKT12 3AFKT12 3AGKT12 3AHKT12 3AJKT12 3ALKT12 3ANKT12 3APKT12 3AQKT12 3ARKT12 3ASKT12 3ATKT12 3AUKT12 3AWKT12 3AXKT12 3AYKT12 3AZKT12 3BAKT12 3BBKT12 3BDKT12 3BEKT12 3BFKT12 3BGKT12 3BHKT12 3BJKT12 3BLKT12 3BPKT12 3BQKT12 3BSKT12 3BTKT12 3BWKT12 3BXKT12 3BYKT12 3BZKT12 3DAKT12 3DBKT12 3DDKT12 3DFKT12 3DGKT12 3DHKT12 3DJKT12 3DLKT12 3DNKT12 3DPKT12 3DQKT12 3DRKT12 3DSKT12 3DTKT12 3DUKT12 3DWKT12 3DXKT12 3DZKT12 3EAKT12 3EBKT12 3EEKT12 3EFKT12 3EGKT12 3EHKT12 3EJKT12 3ELKT12 3ENKT12 3EPKT12 3EQKT12 3ERKT12 3ESKT12 3ETKT12 3EUKT12 3EWKT12 3EXKT12 3EYKT12 3EZKT12 3FAKT12 3FDKT12 3FEKT12 3HAKT12 3HBKT12 3HDKT12 3HEKT12 3HFKT12 3HGKT12 3HHKT12 3HNKT12 3HPKT12 3HSKT12 3HTKT12 3HUKT12 3HXKT12 3HYKT12 3HZKT12 3JAKT12 3JBKT12 3JDKT12 3JEKT12 3JGKT12 3JHKT12 3JJKT12 3JLKT12 3JNKT12 3JPKT12 3JQKT12 3JTKT12 3JUKT12 3JWKT12 3JXKT12 3JYKT12 3JZKT12 3LAKT12 3LBKT12 3LDKT12 3LEKT12 3LFKT12 3LGKT12 3LJKT12 3LNKT12 3LPKT12 3LQKT12 3LRKT12 3LSKT12 3LTKT12 3LUKT12 3LWKT12 3LYKT12 3LZKT12 3NBKT12 3NDKT12 3NEKT12 3NFKT12 3NGKT12 3NHKT12 3NJKT12 3NLKT12 3NNKT12 3NQKT12 3NSKT12 3NTKT12 3NUKT12 3NXKT12 3NYKT12 3PAKT12 3PBKT12 3PDKT12 3PEKT12 3PFKT12 3PGKT12 3PHKT12 3PLKT12 3PNKT12 3PPKT12 3PUKT12 3PWKT12 3QDKT12 3QGKT12 3QHKT12 3QJKT12 3QLKT12 3QNKT12 3QPKT12 3QRKT12 3QSKT12 3QTKT12 3QUKT12 3QWKT12 3QXKT12 3QYKT12 3QZKT12 3RBKT12 3RDKT12 3REKT12 3RGKT12 3RHKT12 3RJKT12 3RLKT12 3RNKT12 3RPKT12 3RQKT12 3RXKT12 3RYKT12 3SAKT12 3SBKT12 3SDKT12 3SEKT12 3SHKT12 3SJKT12 3SLKT12 3SQKT12 3TDKT12 3XEKT12 3XH

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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