CB21 5 postcode sector in the CB21 district

CB21 5 is a sector of the CB21 district: every postcode that starts CB21 5. It has 149 postcodes in use, 4 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 5 sector, and which are new since 2020

Map of every postcode in the CB21 5 sector, by new since 2020 Of the 149 postcodes in the CB21 5 sector that ONS places, 11 are new since 2020 and 138 were in use before 2020. One group of new postcodes is outlined: 5 new postcodes since 2020. Places named: Cambridge, Great Shelford and Stapleford, Fulbourn. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2.5 km. A1301A1307A11A1304 CB21 5AA: before 2020CB21 5AB: before 2020CB21 5AD: before 2020CB21 5AE: before 2020CB21 5AF: before 2020CB21 5AG: before 2020CB21 5AJ: before 2020CB21 5AL: before 2020CB21 5BF: before 2020CB21 5BG: before 2020CB21 5BH: before 2020CB21 5BL: before 2020CB21 5BS: before 2020CB21 5BT: before 2020CB21 5BW: before 2020CB21 5BX: before 2020CB21 5BY: before 2020CB21 5DA: before 2020CB21 5DB: before 2020CB21 5DH: before 2020CB21 5DJ: before 2020CB21 5DL: before 2020CB21 5DN: before 2020CB21 5DP: before 2020CB21 5DQ: before 2020CB21 5DR: before 2020CB21 5DT: before 2020CB21 5DU: before 2020CB21 5DZ: before 2020CB21 5EB: before 2020CB21 5ED: before 2020CB21 5EF: before 2020CB21 5EG: before 2020CB21 5EH: before 2020CB21 5EJ: before 2020CB21 5EQ: before 2020CB21 5ER: before 2020CB21 5ES: before 2020CB21 5ET: before 2020CB21 5EU: before 2020CB21 5EY: before 2020CB21 5GT: before 2020CB21 5HA: before 2020CB21 5HD: before 2020CB21 5HE: before 2020CB21 5HF: before 2020CB21 5HH: before 2020CB21 5HJ: before 2020CB21 5HL: before 2020CB21 5HQ: before 2020CB21 5HR: before 2020CB21 5HZ: before 2020CB21 5JA: before 2020CB21 5JB: before 2020CB21 5JD: before 2020CB21 5JE: before 2020CB21 5JF: before 2020CB21 5JG: before 2020CB21 5JH: before 2020CB21 5JJ: before 2020CB21 5JL: before 2020CB21 5JP: before 2020CB21 5JQ: before 2020CB21 5JT: before 2020CB21 5JW: before 2020CB21 5JY: before 2020CB21 5JZ: before 2020CB21 5LA: before 2020CB21 5LB: before 2020CB21 5LD: before 2020CB21 5LE: before 2020CB21 5LF: before 2020CB21 5LG: before 2020CB21 5LP: before 2020CB21 5LQ: before 2020CB21 5LR: before 2020CB21 5LS: before 2020CB21 5LT: before 2020CB21 5LU: before 2020CB21 5LY: before 2020CB21 5NA: before 2020CB21 5NE: before 2020CB21 5NF: before 2020CB21 5NH: before 2020CB21 5NJ: before 2020CB21 5NL: before 2020CB21 5NP: before 2020CB21 5NR: before 2020CB21 5NS: before 2020CB21 5NT: before 2020CB21 5NU: before 2020CB21 5NX: before 2020CB21 5NY: before 2020CB21 5NZ: before 2020CB21 5PA: before 2020CB21 5PE: before 2020CB21 5PF: before 2020CB21 5PH: before 2020CB21 5RJ: before 2020CB21 5TA: before 2020CB21 5XA: before 2020CB21 5XE: before 2020CB21 5XY: before 2020CB21 5AN: new since 2020CB21 5AP: new since 2020CB21 5AQ: new since 2020CB21 5AY: new since 2020CB21 5AZ: new since 2020CB21 5BA: new since 2020CB21 5BB: new since 2020CB21 5DE: new since 2020 CambridgeGreat Shelford and StaplefordFulbourn 5 new postcodes since 2020, outlined: this goes to CB21 5AQ, the newest of them5 new postcodes since 2020 Map of every postcode in the CB21 5 sector, by new since 2020 Of the 149 postcodes in the CB21 5 sector that ONS places, 11 are new since 2020 and 138 were in use before 2020. One group of new postcodes is outlined: 5 new postcodes since 2020. Places named: Cambridge, Great Shelford and Stapleford, Fulbourn. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 5 km. A1303A1301A1304 CambridgeGreat Shelford and StaplefordFulbourn
  • New since 2020: 11
  • In use before 2020: 138
  • Outline: where 5 or more new postcodes since 2020 lie together

Of the 149 postcodes in the CB21 5 sector that ONS places, 11 are new since 2020 and 138 were in use before 2020.

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. New since 2020 means it came into use in January 2020 or later. A dashed outline shows where 5 or more lie within 230 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; when each came into use: the same directory; 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 5 newest postcodes

CB21 5AQApril 2026CB21 5BBJanuary 2026CB21 5ARApril 2025CB21 5AYOctober 2024CB21 5AZOctober 2024

Where the new postcodes lie together

  • 5 new postcodes since 2020, outlined on the map. CB21 5AQ, is the newest of them.

What do homes sell for in CB21 5?

Homes in CB21 5 sold for a typical £490,000 in the 12 months to August 2026, across 53 sales, down 13.3% on the 12 months before, HM Land Registry's figures show.

£490,000 typical price, the 12 months to August 2026
£565,202 12 months to August 2025
▼ down 13.3% on the 12 months before
  • Detached £691,250 27 sales
  • Semi-detached £425,000 15 sales
  • Terraced £340,000 10 sales
  • Flat or maisonette 1 sale, 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 CB21 5. 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 5

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 5AACB21 5ABCB21 5ADCB21 5AECB21 5AFCB21 5AGCB21 5AHCB21 5AJCB21 5ALCB21 5ANCB21 5APCB21 5AQCB21 5ARCB21 5ASCB21 5ATCB21 5AYCB21 5AZCB21 5BACB21 5BBCB21 5BFCB21 5BGCB21 5BHCB21 5BJCB21 5BLCB21 5BNCB21 5BSCB21 5BTCB21 5BUCB21 5BWCB21 5BXCB21 5BYCB21 5BZCB21 5DACB21 5DBCB21 5DDCB21 5DECB21 5DFCB21 5DHCB21 5DJCB21 5DLCB21 5DNCB21 5DPCB21 5DQCB21 5DRCB21 5DSCB21 5DTCB21 5DUCB21 5DWCB21 5DXCB21 5DYCB21 5DZCB21 5EACB21 5EBCB21 5EDCB21 5EFCB21 5EGCB21 5EHCB21 5EJCB21 5EPCB21 5EQCB21 5ERCB21 5ESCB21 5ETCB21 5EUCB21 5EWCB21 5EXCB21 5EYCB21 5EZCB21 5GACB21 5GTCB21 5HACB21 5HBCB21 5HDCB21 5HECB21 5HFCB21 5HGCB21 5HHCB21 5HJCB21 5HLCB21 5HNCB21 5HQCB21 5HRCB21 5HSCB21 5HTCB21 5HUCB21 5HWCB21 5HXCB21 5HYCB21 5HZCB21 5JACB21 5JBCB21 5JDCB21 5JECB21 5JFCB21 5JGCB21 5JHCB21 5JJCB21 5JLCB21 5JNCB21 5JPCB21 5JQCB21 5JSCB21 5JTCB21 5JWCB21 5JYCB21 5JZCB21 5LACB21 5LBCB21 5LDCB21 5LECB21 5LFCB21 5LGCB21 5LJCB21 5LPCB21 5LQCB21 5LRCB21 5LSCB21 5LTCB21 5LUCB21 5LYCB21 5NACB21 5NECB21 5NFCB21 5NHCB21 5NJCB21 5NLCB21 5NPCB21 5NQCB21 5NRCB21 5NSCB21 5NTCB21 5NUCB21 5NXCB21 5NYCB21 5NZCB21 5PACB21 5PBCB21 5PECB21 5PFCB21 5PHCB21 5RHCB21 5RJCB21 5TACB21 5XACB21 5XBCB21 5XECB21 5XGCB21 5XNCB21 5XY

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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