CB3 postcode district: Cambridge and around

CB3 is a postcode district in Cambridgeshire, with 418 postcodes in use in 3 sectors. It has postcodes in Cambridge and Girton. It is split between 2 councils: Cambridge (301 postcodes) and South Cambridgeshire (117).

Postcodes in use
418
Sectors
3
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 CB3, by flood risk

Map of every postcode in CB3, by flood risk Of the 418 postcodes in CB3 that ONS places, 25 have a home or business at high risk, 7 are at medium risk at worst, 19 are at low risk at worst and 367 are not on the Environment Agency's at-risk list. 3 postcodes lie beyond the edge and are listed under the map. Places named: Cambridge, Girton. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. A14M11A428 CB3 0AA: not on the flood risk listCB3 0AE: not on the flood risk listCB3 0AH: not on the flood risk listCB3 0AJ: not on the flood risk listCB3 0AN: not on the flood risk listCB3 0AP: not on the flood risk listCB3 0AQ: not on the flood risk listCB3 0AS: not on the flood risk listCB3 0AT: not on the flood risk listCB3 0AX: not on the flood risk listCB3 0AZ: not on the flood risk listCB3 0BD: not on the flood risk listCB3 0BE: not on the flood risk listCB3 0BG: not on the flood risk listCB3 0BH: not on the flood risk listCB3 0BJ: not on the flood risk listCB3 0BL: not on the flood risk listCB3 0BN: not on the flood risk listCB3 0BQ: not on the flood risk listCB3 0BT: not on the flood risk listCB3 0BU: not on the flood risk listCB3 0BX: not on the flood risk listCB3 0BY: not on the flood risk listCB3 0BZ: not on the flood risk listCB3 0DB: not on the flood risk listCB3 0DD: not on the flood risk listCB3 0DE: not on the flood risk listCB3 0DF: not on the flood risk listCB3 0DG: not on the flood risk listCB3 0DH: not on the flood risk listCB3 0DL: not on the flood risk listCB3 0DN: not on the flood risk listCB3 0DP: not on the flood risk listCB3 0DQ: not on the flood risk listCB3 0DR: not on the flood risk listCB3 0DS: not on the flood risk listCB3 0DT: not on the flood risk listCB3 0DU: not on the flood risk listCB3 0DW: not on the flood risk listCB3 0DX: not on the flood risk listCB3 0DY: not on the flood risk listCB3 0DZ: not on the flood risk listCB3 0EA: not on the flood risk listCB3 0EF: not on the flood risk listCB3 0EG: not on the flood risk listCB3 0EH: not on the flood risk listCB3 0EJ: not on the flood risk listCB3 0EL: not on the flood risk listCB3 0EN: not on the flood risk listCB3 0EP: not on the flood risk listCB3 0EQ: not on the flood risk listCB3 0ES: not on the flood risk listCB3 0ET: not on the flood risk listCB3 0EU: not on the flood risk listCB3 0EW: not on the flood risk listCB3 0EX: not on the flood risk listCB3 0EY: not on the flood risk listCB3 0EZ: not on the flood risk listCB3 0FA: not on the flood risk listCB3 0FD: not on the flood risk listCB3 0FF: not on the flood risk listCB3 0FH: not on the flood risk listCB3 0FN: not on the flood risk listCB3 0FS: not on the flood risk listCB3 0FT: not on the flood risk listCB3 0FU: not on the flood risk listCB3 0FW: not on the flood risk listCB3 0FY: not on the flood risk listCB3 0FZ: not on the flood risk listCB3 0GJ: not on the flood risk listCB3 0GL: not on the flood risk listCB3 0GP: not on the flood risk listCB3 0GQ: not on the flood risk listCB3 0GS: not on the flood risk listCB3 0GU: not on the flood risk listCB3 0GX: not on the flood risk listCB3 0GY: not on the flood risk listCB3 0HA: not on the flood risk listCB3 0HB: not on the flood risk listCB3 0HD: not on the flood risk listCB3 0HE: not on the flood risk listCB3 0HF: not on the flood risk listCB3 0HH: not on the flood risk listCB3 0HL: not on the flood risk listCB3 0HN: not on the flood risk listCB3 0HP: not on the flood risk listCB3 0HR: not on the flood risk listCB3 0HS: not on the flood risk listCB3 0HT: not on the flood risk listCB3 0HU: not on the flood risk listCB3 0HW: not on the flood risk listCB3 0HX: not on the flood risk listCB3 0HY: not on the flood risk listCB3 0HZ: not on the flood risk listCB3 0JA: not on the flood risk listCB3 0JD: not on the flood risk listCB3 0JE: not on the flood risk listCB3 0JG: not on the flood risk listCB3 0JH: not on the flood risk listCB3 0JN: not on the flood risk listCB3 0JP: not on the flood risk listCB3 0JR: not on the flood risk listCB3 0JS: not on the flood risk listCB3 0JT: not on the flood risk listCB3 0JW: not on the flood risk listCB3 0JX: not on the flood risk listCB3 0JZ: not on the flood risk listCB3 0LB: not on the flood risk listCB3 0LD: not on the flood risk listCB3 0LE: not on the flood risk listCB3 0LF: not on the flood risk listCB3 0LG: not on the flood risk listCB3 0LH: not on the flood risk listCB3 0LJ: not on the flood risk listCB3 0LL: not on the flood risk listCB3 0LN: not on the flood risk listCB3 0LQ: not on the flood risk listCB3 0LS: not on the flood risk listCB3 0LT: not on the flood risk listCB3 0LU: not on the flood risk listCB3 0LX: not on the flood risk listCB3 0LY: not on the flood risk listCB3 0LZ: not on the flood risk listCB3 0NA: not on the flood risk listCB3 0ND: not on the flood risk listCB3 0NE: not on the flood risk listCB3 0NF: not on the flood risk listCB3 0NH: not on the flood risk listCB3 0NJ: not on the flood risk listCB3 0NL: not on the flood risk listCB3 0NN: not on the flood risk listCB3 0NP: not on the flood risk listCB3 0NQ: not on the flood risk listCB3 0NR: not on the flood risk listCB3 0NS: not on the flood risk listCB3 0NW: not on the flood risk listCB3 0NY: not on the flood risk listCB3 0PA: not on the flood risk listCB3 0PB: not on the flood risk listCB3 0PD: not on the flood risk listCB3 0PE: not on the flood risk listCB3 0PF: not on the flood risk listCB3 0PG: not on the flood risk listCB3 0PH: not on the flood risk listCB3 0PJ: not on the flood risk listCB3 0PL: not on the flood risk listCB3 0PN: not on the flood risk listCB3 0PP: not on the flood risk listCB3 0PQ: not on the flood risk listCB3 0PR: not on the flood risk listCB3 0PS: not on the flood risk listCB3 0PT: not on the flood risk listCB3 0PU: not on the flood risk listCB3 0PW: not on the flood risk listCB3 0PX: not on the flood risk listCB3 0PZ: not on the flood risk listCB3 0QA: not on the flood risk listCB3 0QD: not on the flood risk listCB3 0QG: not on the flood risk listCB3 0QL: not on the flood risk listCB3 0QQ: not on the flood risk listCB3 0QR: not on the flood risk listCB3 0QW: not on the flood risk listCB3 0QX: not on the flood risk listCB3 0QZ: not on the flood risk listCB3 0RA: not on the flood risk listCB3 0RB: not on the flood risk listCB3 0RS: not on the flood risk listCB3 0RU: not on the flood risk listCB3 0RY: not on the flood risk listCB3 0RZ: not on the flood risk listCB3 0SJ: not on the flood risk listCB3 0SZ: not on the flood risk listCB3 0TE: not on the flood risk listCB3 0TX: not on the flood risk listCB3 0UB: not on the flood risk listCB3 0UD: not on the flood risk listCB3 0UE: not on the flood risk listCB3 0UF: not on the flood risk listCB3 0UG: not on the flood risk listCB3 0UH: not on the flood risk listCB3 0UL: not on the flood risk listCB3 0UN: not on the flood risk listCB3 0UR: not on the flood risk listCB3 0US: not on the flood risk listCB3 0UT: not on the flood risk listCB3 0UW: not on the flood risk listCB3 0UX: not on the flood risk listCB3 0UZ: not on the flood risk listCB3 0WA: not on the flood risk listCB3 0WB: not on the flood risk listCB3 0WS: not on the flood risk listCB3 0WT: not on the flood risk listCB3 0WU: not on the flood risk listCB3 0WW: not on the flood risk listCB3 0XA: not on the flood risk listCB3 0XB: not on the flood risk listCB3 0XF: not on the flood risk listCB3 0XG: not on the flood risk listCB3 0XH: not on the flood risk listCB3 0XU: not on the flood risk listCB3 0XW: not on the flood risk listCB3 0YG: not on the flood risk listCB3 0YJ: not on the flood risk listCB3 0YP: not on the flood risk listCB3 0YQ: not on the flood risk listCB3 0YS: not on the flood risk listCB3 0YW: not on the flood risk listCB3 0YZ: not on the flood risk listCB3 0ZE: not on the flood risk listCB3 1AA: not on the flood risk listCB3 1AB: not on the flood risk listCB3 1AD: not on the flood risk listCB3 1AE: not on the flood risk listCB3 1AF: not on the flood risk listCB3 1AG: not on the flood risk listCB3 1AQ: not on the flood risk listCB3 1AR: not on the flood risk listCB3 1AS: not on the flood risk listCB3 1AU: not on the flood risk listCB3 1AW: not on the flood risk listCB3 1AX: not on the flood risk listCB3 1AY: not on the flood risk listCB3 1BA: not on the flood risk listCB3 1BB: not on the flood risk listCB3 1BD: not on the flood risk listCB3 1BE: not on the flood risk listCB3 1BF: not on the flood risk listCB3 1BJ: not on the flood risk listCB3 1BQ: not on the flood risk listCB3 1BS: not on the flood risk listCB3 1BT: not on the flood risk listCB3 1BU: not on the flood risk listCB3 1BW: not on the flood risk listCB3 1BX: not on the flood risk listCB3 1BY: not on the flood risk listCB3 1BZ: not on the flood risk listCB3 1DA: not on the flood risk listCB3 1DB: not on the flood risk listCB3 1TU: not on the flood risk listCB3 1TZ: not on the flood risk listCB3 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 9AT: 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 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 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 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 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 9LE: not on the flood risk listCB3 9LF: 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 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 0RX: low flood risk at worstCB3 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 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 9LU: low flood risk at worstCB3 9NB: low flood risk at worstCB3 0JJ: medium flood risk at worstCB3 9HF: medium flood risk at worstCB3 9JL: medium flood risk at worstCB3 9ND: medium flood risk at worstCB3 9NE: medium flood risk at worstCB3 0AD: high flood riskCB3 0AG: high flood riskCB3 0EE: high flood riskCB3 0JY: high flood riskCB3 0QB: high flood riskCB3 0QE: high flood riskCB3 0QF: high flood riskCB3 0QN: high flood riskCB3 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 9PA: high flood riskCB3 9JN: high flood riskCB3 9LH: high flood riskCB3 9LL: high flood riskCB3 9LN: high flood risk CambridgeGirton Map of every postcode in CB3, by flood risk Of the 418 postcodes in CB3 that ONS places, 25 have a home or business at high risk, 7 are at medium risk at worst, 19 are at low risk at worst and 367 are not on the Environment Agency's at-risk list. 3 postcodes lie beyond the edge and are listed under the map. Places named: Cambridge, Girton. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. A1134M11A428 CambridgeGirton
  • A home or business at high risk: 25
  • At medium risk at worst: 7
  • At low risk at worst: 19
  • At very low risk only: 0
  • Not on the at-risk list: 367

Of the 418 postcodes in CB3 that ONS places, 25 have a home or business at high risk, 7 are at medium risk at worst, 19 are at low risk at worst and 367 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 52.2138, longitude 0.0980. 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

25 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 0QH61 at high riskCB3 9LN20 at high riskCB3 0QF18 at high riskCB3 0QE13 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 risk

3 further out, not drawn

These postcodes lie well apart from the rest, so the map is drawn without them to show the rest closer; they are in every count.

CB3 0JJCB3 0JNCB3 0QH

What broadband can you get in CB3?

Ofcom reports on 386 of the 418 postcodes in CB3. At 290 of them every home and business can get gigabit broadband.

Postcodes where every home can get gigabit290 of 386
Postcodes where every home can get superfast368 of 386

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 CB3 at risk of flooding?

51 of the 418 postcodes in CB3 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 250 homes and businesses in an area at high or medium risk.

Homes and businesses in an area at risk, at 51 of 418 postcodes High: 180Medium: 70Low: 419Very low: 1

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 CB3?

Homes in CB3 sold for a typical £621,000 in the 12 months to August 2026, across 107 sales, down 1% on the 12 months before, HM Land Registry's figures show.

£621,000 typical price, the 12 months to August 2026
12 months to August 2025
£626,995
12 months to August 2026
£621,000

▼ down 1% on the 12 months before

Detached£843,748 44 sales
Semi-detached£680,000 17 sales
Terraced£700,000 19 sales
Flat or maisonette£440,000 27 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 CB3

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

CB3 0240 postcodesCB3 140 postcodesCB3 9138 postcodes
UK postcode format explained

Places in CB3

Towns and villages with postcodes in CB3, and how many each has here.

Cambridge postcodes,285Girton postcodes,78

Who covers CB3

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

  • Cambridge301
  • St Neots and Mid Cambridgeshire98
  • South Cambridgeshire19

Police force areas

  • Cambridgeshire418

Next to CB3

CB2 postcode district CB4 postcode district All CB districts Cambridge postcodes

"Next to" is by number: the districts before and after CB3 in the CB area.

Check a postcode

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