CB3 9 postcode sector in the CB3 district

CB3 9 is a sector of the CB3 district: every postcode that starts CB3 9. It has 138 postcodes in use, 20 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 CB3 9 sector, by flood risk

Map of every postcode in the CB3 9 sector, by flood risk Of the 138 postcodes in the CB3 9 sector that ONS places, 16 have a home or business at high risk, 5 are at medium risk at worst, 18 are at low risk at worst and 99 are not on the Environment Agency's at-risk list. Places named: Newnham, Harston & Comberton. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. A603A1134 CB3 9AA: not on the flood risk listCB3 9AB: not on the flood risk listCB3 9AD: not on the flood risk listCB3 9AP: not on the flood risk listCB3 9AQ: not on the flood risk listCB3 9AR: not on the flood risk listCB3 9AS: not on the flood risk listCB3 9AU: not on the flood risk listCB3 9AW: not on the flood risk listCB3 9AX: not on the flood risk listCB3 9AY: not on the flood risk listCB3 9BA: not on the flood risk listCB3 9BB: not on the flood risk listCB3 9BD: not on the flood risk listCB3 9BE: not on the flood risk listCB3 9BG: not on the flood risk listCB3 9BH: not on the flood risk listCB3 9BJ: not on the flood risk listCB3 9BL: not on the flood risk listCB3 9BN: not on the flood risk listCB3 9BQ: not on the flood risk listCB3 9BS: not on the flood risk listCB3 9BT: not on the flood risk listCB3 9BU: not on the flood risk listCB3 9BX: not on the flood risk listCB3 9DB: not on the flood risk listCB3 9DD: not on the flood risk listCB3 9DF: not on the flood risk listCB3 9DG: not on the flood risk listCB3 9DJ: not on the flood risk listCB3 9DL: not on the flood risk listCB3 9DN: not on the flood risk listCB3 9DP: not on the flood risk listCB3 9DQ: not on the flood risk listCB3 9DR: not on the flood risk listCB3 9DU: not on the flood risk listCB3 9DW: not on the flood risk listCB3 9DY: not on the flood risk listCB3 9DZ: not on the flood risk listCB3 9EA: not on the flood risk listCB3 9EB: not on the flood risk listCB3 9EF: not on the flood risk listCB3 9HA: not on the flood risk listCB3 9HE: not on the flood risk listCB3 9HG: not on the flood risk listCB3 9HH: not on the flood risk listCB3 9HJ: not on the flood risk listCB3 9HN: not on the flood risk listCB3 9HP: not on the flood risk listCB3 9HQ: not on the flood risk listCB3 9HR: not on the flood risk listCB3 9HS: not on the flood risk listCB3 9HW: not on the flood risk listCB3 9HX: not on the flood risk listCB3 9JA: not on the flood risk listCB3 9JB: not on the flood risk listCB3 9JD: not on the flood risk listCB3 9JE: not on the flood risk listCB3 9JJ: not on the flood risk listCB3 9JP: not on the flood risk listCB3 9JR: not on the flood risk listCB3 9JS: not on the flood risk listCB3 9JT: not on the flood risk listCB3 9JU: not on the flood risk listCB3 9JW: not on the flood risk listCB3 9JY: not on the flood risk listCB3 9JZ: not on the flood risk listCB3 9LA: not on the flood risk listCB3 9LB: not on the flood risk listCB3 9LE: not on the flood risk listCB3 9LF: not on the flood risk listCB3 9LG: not on the flood risk listCB3 9LP: not on the flood risk listCB3 9LQ: not on the flood risk listCB3 9LR: not on the flood risk listCB3 9LS: not on the flood risk listCB3 9LT: not on the flood risk listCB3 9LW: not on the flood risk listCB3 9LX: not on the flood risk listCB3 9LY: not on the flood risk listCB3 9NF: not on the flood risk listCB3 9NG: not on the flood risk listCB3 9NH: not on the flood risk listCB3 9NJ: not on the flood risk listCB3 9NL: not on the flood risk listCB3 9NN: not on the flood risk listCB3 9NP: not on the flood risk listCB3 9NQ: not on the flood risk listCB3 9NR: not on the flood risk listCB3 9NS: not on the flood risk listCB3 9NT: not on the flood risk listCB3 9NU: not on the flood risk listCB3 9NW: not on the flood risk listCB3 9NX: not on the flood risk listCB3 9NY: not on the flood risk listCB3 9NZ: not on the flood risk listCB3 9QR: not on the flood risk listCB3 9AH: low flood risk at worstCB3 9AJ: low flood risk at worstCB3 9AL: low flood risk at worstCB3 9DA: low flood risk at worstCB3 9DS: low flood risk at worstCB3 9ED: low flood risk at worstCB3 9EE: low flood risk at worstCB3 9EZ: low flood risk at worstCB3 9HB: low flood risk at worstCB3 9HD: low flood risk at worstCB3 9HZ: low flood risk at worstCB3 9JF: low flood risk at worstCB3 9JG: low flood risk at worstCB3 9JH: low flood risk at worstCB3 9JQ: low flood risk at worstCB3 9LU: low flood risk at worstCB3 9NB: low flood risk at worstCB3 9HF: medium flood risk at worstCB3 9HY: medium flood risk at worstCB3 9JL: medium flood risk at worstCB3 9ND: medium flood risk at worstCB3 9NE: medium flood risk at worstCB3 9AF: high flood riskCB3 9AG: high flood riskCB3 9AN: high flood riskCB3 9DH: high flood riskCB3 9EG: high flood riskCB3 9EL: high flood riskCB3 9ES: high flood riskCB3 9ET: high flood riskCB3 9EU: high flood riskCB3 9EX: high flood riskCB3 9EY: high flood riskCB3 9JN: high flood riskCB3 9LH: high flood riskCB3 9LL: high flood riskCB3 9LN: high flood riskCB3 9PA: high flood risk NewnhamHarston & Comberton Map of every postcode in the CB3 9 sector, by flood risk Of the 138 postcodes in the CB3 9 sector that ONS places, 16 have a home or business at high risk, 5 are at medium risk at worst, 18 are at low risk at worst and 99 are not on the Environment Agency's at-risk list. Places named: Newnham, Harston & Comberton. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. A1309 NewnhamHarston & Comberton
  • A home or business at high risk: 16
  • At medium risk at worst: 5
  • At low risk at worst: 18
  • At very low risk only: 0
  • Not on the at-risk list: 99

Of the 138 postcodes in the CB3 9 sector that ONS places, 16 have a home or business at high risk, 5 are at medium risk at worst, 18 are at low risk at worst and 99 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. 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

16 postcodes here have a home or business at high risk. These are the 12 with the most homes and businesses at that risk.

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

CB3 9LN20 at high riskCB3 9LH10 at high riskCB3 9EL10 at high riskCB3 9EG9 at high riskCB3 9ET9 at high riskCB3 9EY5 at high riskCB3 9EX4 at high riskCB3 9AG3 at high riskCB3 9EU2 at high riskCB3 9DH2 at high riskCB3 9AN1 at high riskCB3 9AF1 at high risk

What do homes sell for in CB3 9?

Homes in CB3 9 sold for a typical £1,182,556 in the 12 months to August 2026, across 26 sales, up 21% on the 12 months before, HM Land Registry's figures show.

£1,182,556 typical price, the 12 months to August 2026
£977,500 12 months to August 2025
▲ up 21% on the 12 months before
  • Detached £1,931,000 8 sales
  • Semi-detached 1 sale, too few to price
  • Terraced £1,182,556 12 sales
  • Flat or maisonette £490,000 5 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 CB3 9. 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 CB3 9

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.

CB3 9AACB3 9ABCB3 9ADCB3 9AFCB3 9AGCB3 9AHCB3 9AJCB3 9ALCB3 9ANCB3 9APCB3 9AQCB3 9ARCB3 9ASCB3 9ATCB3 9AUCB3 9AWCB3 9AXCB3 9AYCB3 9BACB3 9BBCB3 9BDCB3 9BECB3 9BGCB3 9BHCB3 9BJCB3 9BLCB3 9BNCB3 9BQCB3 9BSCB3 9BTCB3 9BUCB3 9BXCB3 9DACB3 9DBCB3 9DDCB3 9DFCB3 9DGCB3 9DHCB3 9DJCB3 9DLCB3 9DNCB3 9DPCB3 9DQCB3 9DRCB3 9DSCB3 9DUCB3 9DWCB3 9DYCB3 9DZCB3 9EACB3 9EBCB3 9EDCB3 9EECB3 9EFCB3 9EGCB3 9ELCB3 9EPCB3 9ESCB3 9ETCB3 9EUCB3 9EXCB3 9EYCB3 9EZCB3 9HACB3 9HBCB3 9HDCB3 9HECB3 9HFCB3 9HGCB3 9HHCB3 9HJCB3 9HNCB3 9HPCB3 9HQCB3 9HRCB3 9HSCB3 9HUCB3 9HWCB3 9HXCB3 9HYCB3 9HZCB3 9JACB3 9JBCB3 9JDCB3 9JECB3 9JFCB3 9JGCB3 9JHCB3 9JJCB3 9JLCB3 9JNCB3 9JPCB3 9JQCB3 9JRCB3 9JSCB3 9JTCB3 9JUCB3 9JWCB3 9JYCB3 9JZCB3 9LACB3 9LBCB3 9LECB3 9LFCB3 9LGCB3 9LHCB3 9LLCB3 9LNCB3 9LPCB3 9LQCB3 9LRCB3 9LSCB3 9LTCB3 9LUCB3 9LWCB3 9LXCB3 9LYCB3 9NBCB3 9NDCB3 9NECB3 9NFCB3 9NGCB3 9NHCB3 9NJCB3 9NLCB3 9NNCB3 9NPCB3 9NQCB3 9NRCB3 9NSCB3 9NTCB3 9NUCB3 9NWCB3 9NXCB3 9NYCB3 9NZCB3 9PACB3 9QR

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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