CB1 postcode district: Cambridge and around

CB1 is a postcode district in Cambridgeshire, with 1,159 postcodes in use in 7 sectors. It has postcodes in Cambridge and Cambourne. It is split between 2 councils: Cambridge (1,057 postcodes) and South Cambridgeshire (102).

Postcodes in use
1,159
Sectors
7
Councils
2 councils
Places
2 places

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026. See all our data sources

Every postcode in CB1, by flood risk

Map of every postcode in CB1, by flood risk Of the 1,159 postcodes in CB1 that ONS places, 7 have a home or business at high risk, 6 are at low risk at worst and 1,146 are not on the Environment Agency's at-risk list. Places named: Cambridge, Cambourne, Girton, Hardwick, Highfields Caldecote. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2.5 km. A603A1303A1307A1134 CB1 0AG: not on the flood risk listCB1 0DA: not on the flood risk listCB1 0SA: not on the flood risk listCB1 1AH: not on the flood risk listCB1 1AJ: not on the flood risk listCB1 1AL: not on the flood risk listCB1 1AP: not on the flood risk listCB1 1AR: not on the flood risk listCB1 1AZ: not on the flood risk listCB1 1BA: not on the flood risk listCB1 1BB: not on the flood risk listCB1 1BL: not on the flood risk listCB1 1BN: not on the flood risk listCB1 1BT: not on the flood risk listCB1 1EH: not on the flood risk listCB1 1EJ: not on the flood risk listCB1 1EZ: not on the flood risk listCB1 1HQ: not on the flood risk listCB1 1HT: not on the flood risk listCB1 1JH: not on the flood risk listCB1 1JL: not on the flood risk listCB1 1JW: not on the flood risk listCB1 1LL: not on the flood risk listCB1 1LQ: not on the flood risk listCB1 1LY: not on the flood risk listCB1 1NA: not on the flood risk listCB1 1ND: not on the flood risk listCB1 1NE: not on the flood risk listCB1 1NL: not on the flood risk listCB1 1PT: not on the flood risk listCB1 1QA: not on the flood risk listCB1 2AA: not on the flood risk listCB1 2AB: not on the flood risk listCB1 2AG: not on the flood risk listCB1 2AJ: not on the flood risk listCB1 2AL: not on the flood risk listCB1 2AS: not on the flood risk listCB1 2AW: not on the flood risk listCB1 2AZ: not on the flood risk listCB1 2BB: not on the flood risk listCB1 2BL: not on the flood risk listCB1 2BX: not on the flood risk listCB1 2DG: not on the flood risk listCB1 2DJ: not on the flood risk listCB1 2DP: not on the flood risk listCB1 2DX: not on the flood risk listCB1 2EP: not on the flood risk listCB1 2EU: not on the flood risk listCB1 2EW: not on the flood risk listCB1 2EX: not on the flood risk listCB1 2FB: not on the flood risk listCB1 2FE: not on the flood risk listCB1 2FF: not on the flood risk listCB1 2FP: not on the flood risk listCB1 2FQ: not on the flood risk listCB1 2GA: not on the flood risk listCB1 2GF: not on the flood risk listCB1 2GG: not on the flood risk listCB1 2HF: not on the flood risk listCB1 2HL: not on the flood risk listCB1 2JB: not on the flood risk listCB1 2JF: not on the flood risk listCB1 2LD: not on the flood risk listCB1 2LG: not on the flood risk listCB1 2LH: not on the flood risk listCB1 2LP: not on the flood risk listCB1 2LQ: not on the flood risk listCB1 2LU: not on the flood risk listCB1 2NS: not on the flood risk listCB1 2NX: not on the flood risk listCB1 2NZ: not on the flood risk listCB1 2PG: not on the flood risk listCB1 2PH: not on the flood risk listCB1 2PN: not on the flood risk listCB1 2PR: not on the flood risk listCB1 2PS: not on the flood risk listCB1 2QZ: not on the flood risk listCB1 3AA: not on the flood risk listCB1 3AE: not on the flood risk listCB1 3AF: not on the flood risk listCB1 3AH: not on the flood risk listCB1 3AL: not on the flood risk listCB1 3AN: not on the flood risk listCB1 3AS: not on the flood risk listCB1 3AU: not on the flood risk listCB1 3AY: not on the flood risk listCB1 3BA: not on the flood risk listCB1 3BB: not on the flood risk listCB1 3BE: not on the flood risk listCB1 3BL: not on the flood risk listCB1 3BT: not on the flood risk listCB1 3BW: not on the flood risk listCB1 3BX: not on the flood risk listCB1 3DA: not on the flood risk listCB1 3DF: not on the flood risk listCB1 3DH: not on the flood risk listCB1 3DL: not on the flood risk listCB1 3DR: not on the flood risk listCB1 3DT: not on the flood risk listCB1 3DU: not on the flood risk listCB1 3DY: not on the flood risk listCB1 3DZ: not on the flood risk listCB1 3EA: not on the flood risk listCB1 3EG: not on the flood risk listCB1 3EN: not on the flood risk listCB1 3EP: not on the flood risk listCB1 3ER: not on the flood risk listCB1 3ES: not on the flood risk listCB1 3EX: not on the flood risk listCB1 3FA: not on the flood risk listCB1 3FD: not on the flood risk listCB1 3FF: not on the flood risk listCB1 3FG: not on the flood risk listCB1 3FP: not on the flood risk listCB1 3FQ: not on the flood risk listCB1 3FS: not on the flood risk listCB1 3FT: not on the flood risk listCB1 3FU: not on the flood risk listCB1 3GA: not on the flood risk listCB1 3GB: not on the flood risk listCB1 3GL: not on the flood risk listCB1 3HA: not on the flood risk listCB1 3HD: not on the flood risk listCB1 3HE: not on the flood risk listCB1 3HG: not on the flood risk listCB1 3HH: not on the flood risk listCB1 3HJ: not on the flood risk listCB1 3HL: not on the flood risk listCB1 3HQ: not on the flood risk listCB1 3HS: not on the flood risk listCB1 3HU: not on the flood risk listCB1 3HW: not on the flood risk listCB1 3HX: not on the flood risk listCB1 3HZ: not on the flood risk listCB1 3JF: not on the flood risk listCB1 3JG: not on the flood risk listCB1 3JN: not on the flood risk listCB1 3JP: not on the flood risk listCB1 3JX: not on the flood risk listCB1 3JY: not on the flood risk listCB1 3LF: not on the flood risk listCB1 3LH: not on the flood risk listCB1 3LN: not on the flood risk listCB1 3LS: not on the flood risk listCB1 3LW: not on the flood risk listCB1 3LZ: not on the flood risk listCB1 3NG: not on the flood risk listCB1 3NN: not on the flood risk listCB1 3PG: not on the flood risk listCB1 3PJ: not on the flood risk listCB1 3PN: not on the flood risk listCB1 3PQ: not on the flood risk listCB1 3PR: not on the flood risk listCB1 3PT: not on the flood risk listCB1 3PU: not on the flood risk listCB1 3PW: not on the flood risk listCB1 3QN: not on the flood risk listCB1 3QR: not on the flood risk listCB1 3QU: not on the flood risk listCB1 3QW: not on the flood risk listCB1 3QY: not on the flood risk listCB1 3RH: not on the flood risk listCB1 3RJ: not on the flood risk listCB1 3RN: not on the flood risk listCB1 3RQ: not on the flood risk listCB1 3RR: not on the flood risk listCB1 3RS: not on the flood risk listCB1 3RT: not on the flood risk listCB1 3RU: not on the flood risk listCB1 3RW: not on the flood risk listCB1 3RY: not on the flood risk listCB1 3SB: not on the flood risk listCB1 3SF: not on the flood risk listCB1 3SH: not on the flood risk listCB1 3SJ: not on the flood risk listCB1 3SL: not on the flood risk listCB1 3SS: not on the flood risk listCB1 3ST: not on the flood risk listCB1 3SU: not on the flood risk listCB1 3SX: not on the flood risk listCB1 3SY: not on the flood risk listCB1 3TA: not on the flood risk listCB1 3TB: not on the flood risk listCB1 3TD: not on the flood risk listCB1 3TF: not on the flood risk listCB1 3TG: not on the flood risk listCB1 3TH: not on the flood risk listCB1 3TL: not on the flood risk listCB1 3TN: not on the flood risk listCB1 3TS: not on the flood risk listCB1 3TZ: not on the flood risk listCB1 3UA: not on the flood risk listCB1 3WL: not on the flood risk listCB1 7AA: not on the flood risk listCB1 7AB: not on the flood risk listCB1 7AJ: not on the flood risk listCB1 7AL: not on the flood risk listCB1 7AN: not on the flood risk listCB1 7AP: not on the flood risk listCB1 7AR: not on the flood risk listCB1 7AT: not on the flood risk listCB1 7AU: not on the flood risk listCB1 7AX: not on the flood risk listCB1 7AZ: not on the flood risk listCB1 7BJ: not on the flood risk listCB1 7BQ: not on the flood risk listCB1 7BW: not on the flood risk listCB1 7BX: not on the flood risk listCB1 7DP: not on the flood risk listCB1 7DY: not on the flood risk listCB1 7RS: not on the flood risk listCB1 7SF: not on the flood risk listCB1 7SP: not on the flood risk listCB1 7SR: not on the flood risk listCB1 7ST: not on the flood risk listCB1 7SU: not on the flood risk listCB1 7SY: not on the flood risk listCB1 7SZ: not on the flood risk listCB1 7TA: not on the flood risk listCB1 7TD: not on the flood risk listCB1 7TF: not on the flood risk listCB1 7TL: not on the flood risk listCB1 7TP: not on the flood risk listCB1 7TS: not on the flood risk listCB1 7TT: not on the flood risk listCB1 7TX: not on the flood risk listCB1 7TZ: not on the flood risk listCB1 7UP: not on the flood risk listCB1 7UT: not on the flood risk listCB1 7UU: not on the flood risk listCB1 7UW: not on the flood risk listCB1 7XA: not on the flood risk listCB1 7XD: not on the flood risk listCB1 7XE: not on the flood risk listCB1 8AD: not on the flood risk listCB1 8AF: not on the flood risk listCB1 8AG: not on the flood risk listCB1 8AJ: not on the flood risk listCB1 8AL: not on the flood risk listCB1 8AZ: not on the flood risk listCB1 8BA: not on the flood risk listCB1 8BG: not on the flood risk listCB1 8BL: not on the flood risk listCB1 8BN: not on the flood risk listCB1 8DB: not on the flood risk listCB1 8DE: not on the flood risk listCB1 8DP: not on the flood risk listCB1 8DS: not on the flood risk listCB1 8DW: not on the flood risk listCB1 8EA: not on the flood risk listCB1 8ED: not on the flood risk listCB1 8HD: not on the flood risk listCB1 8NJ: not on the flood risk listCB1 8NN: not on the flood risk listCB1 8NP: not on the flood risk listCB1 8NQ: not on the flood risk listCB1 8NS: not on the flood risk listCB1 8NU: not on the flood risk listCB1 8NW: not on the flood risk listCB1 8NX: not on the flood risk listCB1 8NZ: not on the flood risk listCB1 8PA: not on the flood risk listCB1 8PL: not on the flood risk listCB1 8PR: not on the flood risk listCB1 8PT: not on the flood risk listCB1 8PU: not on the flood risk listCB1 8PW: not on the flood risk listCB1 8PX: not on the flood risk listCB1 8PY: not on the flood risk listCB1 8QN: not on the flood risk listCB1 8QR: not on the flood risk listCB1 8QS: not on the flood risk listCB1 8QT: not on the flood risk listCB1 8QW: not on the flood risk listCB1 8RD: not on the flood risk listCB1 8RJ: not on the flood risk listCB1 8RL: not on the flood risk listCB1 8RN: not on the flood risk listCB1 8RP: not on the flood risk listCB1 8RW: not on the flood risk listCB1 8RX: not on the flood risk listCB1 8SN: not on the flood risk listCB1 8YU: not on the flood risk listCB1 9AD: not on the flood risk listCB1 9AN: not on the flood risk listCB1 9AP: not on the flood risk listCB1 9AR: not on the flood risk listCB1 9AS: not on the flood risk listCB1 9AT: not on the flood risk listCB1 9AU: not on the flood risk listCB1 9AX: not on the flood risk listCB1 9AY: not on the flood risk listCB1 9AZ: not on the flood risk listCB1 9BE: not on the flood risk listCB1 9BF: not on the flood risk listCB1 9BG: not on the flood risk listCB1 9BH: not on the flood risk listCB1 9BJ: not on the flood risk listCB1 9BQ: not on the flood risk listCB1 9BU: not on the flood risk listCB1 9DA: not on the flood risk listCB1 9DB: not on the flood risk listCB1 9EH: not on the flood risk listCB1 9EJ: not on the flood risk listCB1 9EP: not on the flood risk listCB1 9EU: not on the flood risk listCB1 9EW: not on the flood risk listCB1 9GD: not on the flood risk listCB1 9GE: not on the flood risk listCB1 9GF: not on the flood risk listCB1 9GG: not on the flood risk listCB1 9GH: not on the flood risk listCB1 9GP: not on the flood risk listCB1 9GQ: not on the flood risk listCB1 9GT: not on the flood risk listCB1 9HA: not on the flood risk listCB1 9HD: not on the flood risk listCB1 9HH: not on the flood risk listCB1 9HJ: not on the flood risk listCB1 9HS: not on the flood risk listCB1 9HY: not on the flood risk listCB1 9JA: not on the flood risk listCB1 9JH: not on the flood risk listCB1 9JJ: not on the flood risk listCB1 9JL: not on the flood risk listCB1 9JP: not on the flood risk listCB1 9JR: not on the flood risk listCB1 9JX: not on the flood risk listCB1 9LB: not on the flood risk listCB1 9LD: not on the flood risk listCB1 9LF: not on the flood risk listCB1 9LP: not on the flood risk listCB1 9LR: not on the flood risk listCB1 9LS: not on the flood risk listCB1 9LY: not on the flood risk listCB1 9ND: not on the flood risk listCB1 9NF: not on the flood risk listCB1 9NJ: not on the flood risk listCB1 9PB: not on the flood risk listCB1 9PD: not on the flood risk listCB1 9SA: not on the flood risk listCB1 9XG: not on the flood risk listCB1 9XH: not on the flood risk listCB1 9XP: not on the flood risk listCB1 9XU: not on the flood risk listCB1 9XY: not on the flood risk listCB1 9XZ: not on the flood risk listCB1 9YE: not on the flood risk listCB1 9YH: not on the flood risk listCB1 9YJ: not on the flood risk listCB1 9YP: not on the flood risk listCB1 3EW: low flood risk at worstCB1 3HR: low flood risk at worstCB1 3HY: low flood risk at worstCB1 3NX: low flood risk at worstCB1 1HA: high flood riskCB1 3NY: high flood riskCB1 3NZ: high flood riskCB1 3HP: high flood riskCB1 3PA: high flood riskCB1 9AJ: high flood risk CambridgeCambourneGirtonHardwickHighfields Caldecote Map of every postcode in CB1, by flood risk Of the 1,159 postcodes in CB1 that ONS places, 7 have a home or business at high risk, 6 are at low risk at worst and 1,146 are not on the Environment Agency's at-risk list. Places named: Cambridge, Cambourne, Girton. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 5 km. A603A1301A1307 CambridgeCambourneGirton
  • A home or business at high risk: 7
  • At medium risk at worst: 0
  • At low risk at worst: 6
  • At very low risk only: 0
  • Not on the at-risk list: 1,146

Of the 1,159 postcodes in CB1 that ONS places, 7 have a home or business at high risk, 6 are at low risk at worst and 1,146 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.

The middle of its postcodes: latitude 52.1952, longitude 0.1415. Open this area on OpenStreetMap

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.

CB1 9AL33 at high riskCB1 3NZ21 at high riskCB1 3NY6 at high riskCB1 3PA5 at high riskCB1 9AJ4 at high riskCB1 1HA3 at high riskCB1 3HP1 at high risk

What broadband can you get in CB1?

Ofcom reports on 903 of the 1,159 postcodes in CB1. At 796 of them every home and business can get gigabit broadband.

Postcodes where every home can get gigabit796 of 903
Postcodes where every home can get superfast884 of 903

Ofcom gives each postcode's share of homes and businesses, not how many there are, so these count postcodes. Each postcode page has its own figures. A provider's checker answers for one address.

Check one address on Ofcom's checker

Source: Ofcom, Connected Nations, Spring 2026, data for January 2026, Open Government Licence v3.0. How we use it

Is CB1 at risk of flooding?

13 of the 1,159 postcodes in CB1 have a home or business in an area at risk of flooding from rivers or the sea, the Environment Agency says. At those, it puts 75 homes and businesses in an area at high or medium risk.

Homes and businesses in an area at risk, at 13 of 1,159 postcodes High: 73Medium: 2Low: 55

High: 3.3% or more a year (1 in 30). Medium: 1% to 3.3% a year. Low: 0.1% to 1% a year. Very low: under 0.1% a year (1 in 1,000). Each band is the chance of flooding in any one year.

Homes and businesses in an area at risk of flooding from rivers or the sea, as the Environment Agency counts them, added up over the postcodes. It is for the land, not each building, and leaves out surface water, groundwater and sewers. Each postcode page has its own figures and its flood warning areas.

Source: Environment Agency, Risk of Flooding from Rivers and Sea (postcodes in areas at risk), published 6 July 2026, Open Government Licence v3.0. How we use it

What do homes sell for in CB1?

Homes in CB1 sold for a typical £485,000 in the 12 months to August 2026, across 427 sales, down 3% on the 12 months before, HM Land Registry's figures show.

£485,000 typical price, the 12 months to August 2026
12 months to August 2025
£500,000
12 months to August 2026
£485,000

▼ down 3% on the 12 months before

Detached£727,500 44 sales
Semi-detached£557,062 91 sales
Terraced£497,500 184 sales
Flat or maisonette£293,750 108 sales

Standard sales of homes at market value. A typical price is the median, the middle sale. Sales take weeks to be registered, so the last month or two are incomplete. Each postcode page gives the figure for its own postcode sector.

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 CB1

Pick a sector, then a postcode. A sector is the district plus the next digit.

CB1 0238 postcodesCB1 1110 postcodesCB1 2171 postcodesCB1 3291 postcodesCB1 787 postcodesCB1 8101 postcodesCB1 9161 postcodes
UK postcode format explained

Places in CB1

Towns and villages with postcodes in CB1, and how many each has here.

Cambridge postcodes,1,092Cambourne postcodes,39

Who covers CB1

How many of the district's postcodes in use fall under each council, constituency and police force area.

Councils

What council am I in?

Constituencies

  • Cambridge768
  • South Cambridgeshire352
  • St Neots and Mid Cambridgeshire39

Police force areas

  • Cambridgeshire1,159

Next to CB1

CB2 postcode district All CB districts Cambridge postcodes

"Next to" is by number: the district after CB1 in the CB area.

Check a postcode

Something wrong on this page? Report an error and we will check it against the source.