CB21 6 postcode sector in the CB21 district

CB21 6 is a sector of the CB21 district: every postcode that starts CB21 6. It has 57 postcodes in use, 9 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 CB21 6 sector, by flood risk

Map of every postcode in the CB21 6 sector, by flood risk Of the 57 postcodes in the CB21 6 sector that ONS places, 7 have a home or business at high risk, 2 are at medium risk at worst and 48 are not on the Environment Agency's at-risk list. Places named: Linton. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. A11A1307 CB21 6AA: not on the flood risk listCB21 6AD: not on the flood risk listCB21 6AF: not on the flood risk listCB21 6AG: not on the flood risk listCB21 6AH: not on the flood risk listCB21 6AJ: not on the flood risk listCB21 6AL: not on the flood risk listCB21 6AP: not on the flood risk listCB21 6AQ: not on the flood risk listCB21 6AR: not on the flood risk listCB21 6AS: not on the flood risk listCB21 6AT: not on the flood risk listCB21 6AU: not on the flood risk listCB21 6AW: not on the flood risk listCB21 6AX: not on the flood risk listCB21 6AY: not on the flood risk listCB21 6AZ: not on the flood risk listCB21 6BA: not on the flood risk listCB21 6BB: not on the flood risk listCB21 6BD: not on the flood risk listCB21 6BE: not on the flood risk listCB21 6BH: not on the flood risk listCB21 6BN: not on the flood risk listCB21 6BP: not on the flood risk listCB21 6BQ: not on the flood risk listCB21 6BT: not on the flood risk listCB21 6BW: not on the flood risk listCB21 6BX: not on the flood risk listCB21 6BY: not on the flood risk listCB21 6BZ: not on the flood risk listCB21 6DA: not on the flood risk listCB21 6DB: not on the flood risk listCB21 6DD: not on the flood risk listCB21 6DE: not on the flood risk listCB21 6DF: not on the flood risk listCB21 6DG: not on the flood risk listCB21 6DH: not on the flood risk listCB21 6DJ: not on the flood risk listCB21 6DL: not on the flood risk listCB21 6DN: not on the flood risk listCB21 6DP: not on the flood risk listCB21 6DQ: not on the flood risk listCB21 6GB: not on the flood risk listCB21 6GH: not on the flood risk listCB21 6GQ: not on the flood risk listCB21 6GS: not on the flood risk listCB21 6GT: not on the flood risk listCB21 6XR: not on the flood risk listCB21 6AB: medium flood risk at worstCB21 6AE: medium flood risk at worstCB21 6AN: high flood riskCB21 6BG: high flood riskCB21 6BJ: high flood riskCB21 6BL: high flood riskCB21 6BS: high flood riskCB21 6BU: high flood riskCB21 6GP: high flood risk Linton Map of every postcode in the CB21 6 sector, by flood risk Of the 57 postcodes in the CB21 6 sector that ONS places, 7 have a home or business at high risk, 2 are at medium risk at worst and 48 are not on the Environment Agency's at-risk list. Places named: Linton. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. Linton
  • A home or business at high risk: 7
  • At medium risk at worst: 2
  • At low risk at worst: 0
  • At very low risk only: 0
  • Not on the at-risk list: 48

Of the 57 postcodes in the CB21 6 sector that ONS places, 7 have a home or business at high risk, 2 are at medium risk at worst and 48 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. 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.

CB21 6BU4 at high riskCB21 6BS3 at high riskCB21 6BL2 at high riskCB21 6AN1 at high riskCB21 6GP1 at high riskCB21 6BG1 at high riskCB21 6BJ1 at high risk

What do homes sell for in CB21 6?

Homes in CB21 6 sold for a typical £740,000 in the 12 months to August 2026, across 15 sales, up 46.5% on the 12 months before, HM Land Registry's figures show.

£740,000 typical price, the 12 months to August 2026
£505,000 12 months to August 2025
▲ up 46.5% on the 12 months before
  • Detached £740,000 13 sales
  • Semi-detached 2 sales, too few to price

Standard sales of homes at market value at the postcodes that start CB21 6. 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 CB21 6

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.

CB21 6AACB21 6ABCB21 6ADCB21 6AECB21 6AFCB21 6AGCB21 6AHCB21 6AJCB21 6ALCB21 6ANCB21 6APCB21 6AQCB21 6ARCB21 6ASCB21 6ATCB21 6AUCB21 6AWCB21 6AXCB21 6AYCB21 6AZCB21 6BACB21 6BBCB21 6BDCB21 6BECB21 6BGCB21 6BHCB21 6BJCB21 6BLCB21 6BNCB21 6BPCB21 6BQCB21 6BSCB21 6BTCB21 6BUCB21 6BWCB21 6BXCB21 6BYCB21 6BZCB21 6DACB21 6DBCB21 6DDCB21 6DECB21 6DFCB21 6DGCB21 6DHCB21 6DJCB21 6DLCB21 6DNCB21 6DPCB21 6DQCB21 6GBCB21 6GHCB21 6GPCB21 6GQCB21 6GSCB21 6GTCB21 6XR

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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