CB23 4 postcode sector in the CB23 district

CB23 4 is a sector of the CB23 district: every postcode that starts CB23 4. It has 62 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 CB23 4 sector, by flood risk

Map of every postcode in the CB23 4 sector, by flood risk Of the 62 postcodes in the CB23 4 sector that ONS places, 3 have a home or business at high risk, 1 are at medium risk at worst, 5 are at low risk at worst and 53 are not on the Environment Agency's at-risk list. Places named: Caxton & Papworth. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. A428A14 CB23 4AB: not on the flood risk listCB23 4EY: not on the flood risk listCB23 4GB: not on the flood risk listCB23 4GG: not on the flood risk listCB23 4HS: not on the flood risk listCB23 4HU: not on the flood risk listCB23 4HZ: not on the flood risk listCB23 4JA: not on the flood risk listCB23 4JB: not on the flood risk listCB23 4JD: not on the flood risk listCB23 4JF: not on the flood risk listCB23 4JH: not on the flood risk listCB23 4JJ: not on the flood risk listCB23 4JL: not on the flood risk listCB23 4JN: not on the flood risk listCB23 4JP: not on the flood risk listCB23 4JR: not on the flood risk listCB23 4JS: not on the flood risk listCB23 4JT: not on the flood risk listCB23 4JU: not on the flood risk listCB23 4JX: not on the flood risk listCB23 4JY: not on the flood risk listCB23 4JZ: not on the flood risk listCB23 4LA: not on the flood risk listCB23 4LB: not on the flood risk listCB23 4LJ: not on the flood risk listCB23 4LL: not on the flood risk listCB23 4LP: not on the flood risk listCB23 4LR: not on the flood risk listCB23 4LS: not on the flood risk listCB23 4LU: not on the flood risk listCB23 4LX: not on the flood risk listCB23 4LY: not on the flood risk listCB23 4LZ: not on the flood risk listCB23 4NA: not on the flood risk listCB23 4NB: not on the flood risk listCB23 4ND: not on the flood risk listCB23 4NE: not on the flood risk listCB23 4NF: not on the flood risk listCB23 4NG: not on the flood risk listCB23 4NH: not on the flood risk listCB23 4NJ: not on the flood risk listCB23 4NL: not on the flood risk listCB23 4NN: not on the flood risk listCB23 4NP: not on the flood risk listCB23 4NQ: not on the flood risk listCB23 4NR: not on the flood risk listCB23 4NS: not on the flood risk listCB23 4NT: not on the flood risk listCB23 4NU: not on the flood risk listCB23 4NW: not on the flood risk listCB23 4WU: not on the flood risk listCB23 4HT: low flood risk at worstCB23 4HY: low flood risk at worstCB23 4JE: low flood risk at worstCB23 4JG: low flood risk at worstCB23 4LT: low flood risk at worstCB23 4JQ: medium flood risk at worstCB23 4HX: high flood riskCB23 4LN: high flood riskCB23 4LW: high flood risk Caxton & Papworth Map of every postcode in the CB23 4 sector, by flood risk Of the 62 postcodes in the CB23 4 sector that ONS places, 3 have a home or business at high risk, 1 are at medium risk at worst, 5 are at low risk at worst and 53 are not on the Environment Agency's at-risk list. Places named: Caxton & Papworth. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2 km. Caxton & Papworth
  • A home or business at high risk: 3
  • At medium risk at worst: 1
  • At low risk at worst: 5
  • At very low risk only: 0
  • Not on the at-risk list: 53

Of the 62 postcodes in the CB23 4 sector that ONS places, 3 have a home or business at high risk, 1 are at medium risk at worst, 5 are at low risk at worst and 53 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

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

CB23 4HX9 at high riskCB23 4LW9 at high riskCB23 4LN2 at high risk

What do homes sell for in CB23 4?

Homes in CB23 4 sold for a typical £350,000 in the 12 months to August 2026, across 7 sales, down 43.8% on the 12 months before, HM Land Registry's figures show.

£350,000 typical price, the 12 months to August 2026
£622,500 12 months to August 2025
▼ down 43.8% on the 12 months before
  • Detached £350,000 5 sales
  • Semi-detached 2 sales, too few to price

Standard sales of homes at market value at the postcodes that start CB23 4. 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 CB23 4

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.

CB23 4ABCB23 4EYCB23 4GBCB23 4GGCB23 4HSCB23 4HTCB23 4HUCB23 4HXCB23 4HYCB23 4HZCB23 4JACB23 4JBCB23 4JDCB23 4JECB23 4JFCB23 4JGCB23 4JHCB23 4JJCB23 4JLCB23 4JNCB23 4JPCB23 4JQCB23 4JRCB23 4JSCB23 4JTCB23 4JUCB23 4JXCB23 4JYCB23 4JZCB23 4LACB23 4LBCB23 4LJCB23 4LLCB23 4LNCB23 4LPCB23 4LRCB23 4LSCB23 4LTCB23 4LUCB23 4LWCB23 4LXCB23 4LYCB23 4LZCB23 4NACB23 4NBCB23 4NDCB23 4NECB23 4NFCB23 4NGCB23 4NHCB23 4NJCB23 4NLCB23 4NNCB23 4NPCB23 4NQCB23 4NRCB23 4NSCB23 4NTCB23 4NUCB23 4NWCB23 4WBCB23 4WU

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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