KT21 1 postcode sector in the KT21 district

KT21 1 is a sector of the KT21 district: every postcode that starts KT21 1. It has 149 postcodes in use, 2 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 KT21 1 sector, by flood risk

Map of every postcode in the KT21 1 sector, by flood risk Of the 149 postcodes in the KT21 1 sector that ONS places, 2 have a home or business at high risk, 2 are at low risk at worst and 145 are not on the Environment Agency's at-risk list. One postcode lies beyond the edge and is listed under the map. Places named: Ashtead. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A24 KT21 1AA: not on the flood risk listKT21 1AF: not on the flood risk listKT21 1AL: not on the flood risk listKT21 1AT: not on the flood risk listKT21 1AW: not on the flood risk listKT21 1AZ: not on the flood risk listKT21 1BD: not on the flood risk listKT21 1BE: not on the flood risk listKT21 1BH: not on the flood risk listKT21 1BJ: not on the flood risk listKT21 1BL: not on the flood risk listKT21 1BN: not on the flood risk listKT21 1BS: not on the flood risk listKT21 1BT: not on the flood risk listKT21 1BU: not on the flood risk listKT21 1BZ: not on the flood risk listKT21 1DD: not on the flood risk listKT21 1DE: not on the flood risk listKT21 1DF: not on the flood risk listKT21 1DG: not on the flood risk listKT21 1DH: not on the flood risk listKT21 1DJ: not on the flood risk listKT21 1DL: not on the flood risk listKT21 1DP: not on the flood risk listKT21 1DR: not on the flood risk listKT21 1DS: not on the flood risk listKT21 1DT: not on the flood risk listKT21 1DU: not on the flood risk listKT21 1DW: not on the flood risk listKT21 1DX: not on the flood risk listKT21 1DY: not on the flood risk listKT21 1DZ: not on the flood risk listKT21 1EA: not on the flood risk listKT21 1EB: not on the flood risk listKT21 1ED: not on the flood risk listKT21 1EE: not on the flood risk listKT21 1EG: not on the flood risk listKT21 1EJ: not on the flood risk listKT21 1EN: not on the flood risk listKT21 1ET: not on the flood risk listKT21 1EU: not on the flood risk listKT21 1EY: not on the flood risk listKT21 1HA: not on the flood risk listKT21 1HD: not on the flood risk listKT21 1HF: not on the flood risk listKT21 1HJ: not on the flood risk listKT21 1HN: not on the flood risk listKT21 1HP: not on the flood risk listKT21 1HQ: not on the flood risk listKT21 1HR: not on the flood risk listKT21 1HS: not on the flood risk listKT21 1HU: not on the flood risk listKT21 1HY: not on the flood risk listKT21 1JA: not on the flood risk listKT21 1JB: not on the flood risk listKT21 1JG: not on the flood risk listKT21 1JL: not on the flood risk listKT21 1JN: not on the flood risk listKT21 1JR: not on the flood risk listKT21 1JS: not on the flood risk listKT21 1JU: not on the flood risk listKT21 1JX: not on the flood risk listKT21 1LD: not on the flood risk listKT21 1LE: not on the flood risk listKT21 1LF: not on the flood risk listKT21 1LG: not on the flood risk listKT21 1LH: not on the flood risk listKT21 1LJ: not on the flood risk listKT21 1LQ: not on the flood risk listKT21 1LR: not on the flood risk listKT21 1LS: not on the flood risk listKT21 1LT: not on the flood risk listKT21 1LU: not on the flood risk listKT21 1LW: not on the flood risk listKT21 1LY: not on the flood risk listKT21 1NA: not on the flood risk listKT21 1NB: not on the flood risk listKT21 1NE: not on the flood risk listKT21 1NG: not on the flood risk listKT21 1NH: not on the flood risk listKT21 1NL: not on the flood risk listKT21 1NN: not on the flood risk listKT21 1NP: not on the flood risk listKT21 1NQ: not on the flood risk listKT21 1NR: not on the flood risk listKT21 1NS: not on the flood risk listKT21 1NT: not on the flood risk listKT21 1NU: not on the flood risk listKT21 1NW: not on the flood risk listKT21 1NX: not on the flood risk listKT21 1PA: not on the flood risk listKT21 1PB: not on the flood risk listKT21 1PD: not on the flood risk listKT21 1PE: not on the flood risk listKT21 1PG: not on the flood risk listKT21 1PH: not on the flood risk listKT21 1PJ: not on the flood risk listKT21 1PL: not on the flood risk listKT21 1PP: not on the flood risk listKT21 1PR: not on the flood risk listKT21 1PS: not on the flood risk listKT21 1PT: not on the flood risk listKT21 1PU: not on the flood risk listKT21 1PW: not on the flood risk listKT21 1PX: not on the flood risk listKT21 1PY: not on the flood risk listKT21 1QJ: not on the flood risk listKT21 1QL: not on the flood risk listKT21 1QQ: not on the flood risk listKT21 1QR: not on the flood risk listKT21 1QU: not on the flood risk listKT21 1QX: not on the flood risk listKT21 1QY: not on the flood risk listKT21 1QZ: not on the flood risk listKT21 1RB: not on the flood risk listKT21 1RD: not on the flood risk listKT21 1RE: not on the flood risk listKT21 1RF: not on the flood risk listKT21 1RH: not on the flood risk listKT21 1RL: not on the flood risk listKT21 1RN: not on the flood risk listKT21 1RP: not on the flood risk listKT21 1RQ: not on the flood risk listKT21 1RR: not on the flood risk listKT21 1RS: not on the flood risk listKT21 1RT: not on the flood risk listKT21 1RU: not on the flood risk listKT21 1RW: not on the flood risk listKT21 1RX: not on the flood risk listKT21 1RY: not on the flood risk listKT21 1RZ: not on the flood risk listKT21 1SA: not on the flood risk listKT21 1SB: not on the flood risk listKT21 1SD: not on the flood risk listKT21 1SE: not on the flood risk listKT21 1SF: not on the flood risk listKT21 1SG: not on the flood risk listKT21 1SH: not on the flood risk listKT21 1SJ: not on the flood risk listKT21 1SL: not on the flood risk listKT21 1SN: not on the flood risk listKT21 1SQ: not on the flood risk listKT21 1SW: not on the flood risk listKT21 1QB: low flood risk at worstKT21 1QF: low flood risk at worstKT21 1PZ: high flood riskKT21 1QD: high flood risk Ashtead Map of every postcode in the KT21 1 sector, by flood risk Of the 149 postcodes in the KT21 1 sector that ONS places, 2 have a home or business at high risk, 2 are at low risk at worst and 145 are not on the Environment Agency's at-risk list. One postcode lies beyond the edge and is listed under the map. Places named: Ashtead. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. A24 Ashtead
  • A home or business at high risk: 2
  • At medium risk at worst: 0
  • At low risk at worst: 2
  • At very low risk only: 0
  • Not on the at-risk list: 145

Of the 149 postcodes in the KT21 1 sector that ONS places, 2 have a home or business at high risk, 2 are at low risk at worst and 145 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. 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.

KT21 1QD4 at high riskKT21 1PZ3 at high risk

Further out, not drawn

This postcode lies well apart from the rest, so the map is drawn without it to show the rest closer; it is in every count.

KT21 1AG

What do homes sell for in KT21 1?

Homes in KT21 1 sold for a typical £760,000 in the 12 months to August 2026, across 53 sales, down 7.3% on the 12 months before, HM Land Registry's figures show.

£760,000 typical price, the 12 months to August 2026
£820,000 12 months to August 2025
▼ down 7.3% on the 12 months before
  • Detached £859,950 15 sales
  • Semi-detached £675,000 31 sales
  • Terraced 3 sales, too few to price
  • Flat or maisonette 4 sales, too few to price

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 KT21 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 KT21 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.

KT21 1AAKT21 1AFKT21 1AGKT21 1ALKT21 1ATKT21 1AWKT21 1AZKT21 1BDKT21 1BEKT21 1BHKT21 1BJKT21 1BLKT21 1BNKT21 1BSKT21 1BTKT21 1BUKT21 1BZKT21 1DDKT21 1DEKT21 1DFKT21 1DGKT21 1DHKT21 1DJKT21 1DLKT21 1DPKT21 1DRKT21 1DSKT21 1DTKT21 1DUKT21 1DWKT21 1DXKT21 1DYKT21 1DZKT21 1EAKT21 1EBKT21 1EDKT21 1EEKT21 1EGKT21 1EJKT21 1ENKT21 1ETKT21 1EUKT21 1EYKT21 1HAKT21 1HDKT21 1HFKT21 1HJKT21 1HNKT21 1HPKT21 1HQKT21 1HRKT21 1HSKT21 1HUKT21 1HYKT21 1JAKT21 1JBKT21 1JGKT21 1JLKT21 1JNKT21 1JRKT21 1JSKT21 1JUKT21 1JXKT21 1LDKT21 1LEKT21 1LFKT21 1LGKT21 1LHKT21 1LJKT21 1LQKT21 1LRKT21 1LSKT21 1LTKT21 1LUKT21 1LWKT21 1LYKT21 1NAKT21 1NBKT21 1NEKT21 1NGKT21 1NHKT21 1NLKT21 1NNKT21 1NPKT21 1NQKT21 1NRKT21 1NSKT21 1NTKT21 1NUKT21 1NWKT21 1NXKT21 1PAKT21 1PBKT21 1PDKT21 1PEKT21 1PGKT21 1PHKT21 1PJKT21 1PLKT21 1PPKT21 1PRKT21 1PSKT21 1PTKT21 1PUKT21 1PWKT21 1PXKT21 1PYKT21 1PZKT21 1QBKT21 1QDKT21 1QFKT21 1QJKT21 1QLKT21 1QQKT21 1QRKT21 1QUKT21 1QXKT21 1QYKT21 1QZKT21 1RBKT21 1RDKT21 1REKT21 1RFKT21 1RGKT21 1RHKT21 1RLKT21 1RNKT21 1RPKT21 1RQKT21 1RRKT21 1RSKT21 1RTKT21 1RUKT21 1RWKT21 1RXKT21 1RYKT21 1RZKT21 1SAKT21 1SBKT21 1SDKT21 1SEKT21 1SFKT21 1SGKT21 1SHKT21 1SJKT21 1SLKT21 1SNKT21 1SQKT21 1SW

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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