CB21 postcode district: Linton and around

CB21 is a postcode district mostly in Cambridgeshire, with 446 postcodes in use in 3 sectors. It has postcodes in Linton, Fulbourn and Cambridge. It is split between 3 councils: South Cambridgeshire (432 postcodes), Uttlesford (13) and Cambridge (1). 433 are in Cambridgeshire and 13 in Essex.

Postcodes in use
446
Sectors
3
Councils
3 councils
Places
3 places

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

Every postcode in CB21, by flood risk

Map of every postcode in CB21, by flood risk Of the 446 postcodes in CB21 that ONS places, 17 have a home or business at high risk, 7 are at medium risk at worst, 6 are at low risk at worst and 416 are not on the Environment Agency's at-risk list. Places named: Linton, Cambridge, Sawston, Great Shelford and Stapleford, Fulbourn. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2.5 km. A1301M11A505A1304 CB21 4AA: not on the flood risk listCB21 4AB: not on the flood risk listCB21 4AD: not on the flood risk listCB21 4AE: not on the flood risk listCB21 4AF: not on the flood risk listCB21 4AL: not on the flood risk listCB21 4AQ: not on the flood risk listCB21 4AR: not on the flood risk listCB21 4AS: not on the flood risk listCB21 4AT: not on the flood risk listCB21 4AU: not on the flood risk listCB21 4AX: not on the flood risk listCB21 4AY: not on the flood risk listCB21 4AZ: not on the flood risk listCB21 4BA: not on the flood risk listCB21 4BB: not on the flood risk listCB21 4BE: not on the flood risk listCB21 4BF: not on the flood risk listCB21 4BG: not on the flood risk listCB21 4DG: not on the flood risk listCB21 4DJ: not on the flood risk listCB21 4DS: not on the flood risk listCB21 4DT: not on the flood risk listCB21 4DU: not on the flood risk listCB21 4DW: not on the flood risk listCB21 4DX: not on the flood risk listCB21 4DY: not on the flood risk listCB21 4DZ: not on the flood risk listCB21 4EA: not on the flood risk listCB21 4EB: not on the flood risk listCB21 4EE: not on the flood risk listCB21 4EF: not on the flood risk listCB21 4EG: not on the flood risk listCB21 4EH: not on the flood risk listCB21 4EJ: not on the flood risk listCB21 4EN: not on the flood risk listCB21 4ER: not on the flood risk listCB21 4ES: not on the flood risk listCB21 4EU: not on the flood risk listCB21 4EW: not on the flood risk listCB21 4FD: not on the flood risk listCB21 4HB: not on the flood risk listCB21 4HF: not on the flood risk listCB21 4HH: not on the flood risk listCB21 4HL: not on the flood risk listCB21 4HQ: not on the flood risk listCB21 4HY: not on the flood risk listCB21 4JA: not on the flood risk listCB21 4JB: not on the flood risk listCB21 4JE: not on the flood risk listCB21 4JG: not on the flood risk listCB21 4JH: not on the flood risk listCB21 4JL: not on the flood risk listCB21 4JP: not on the flood risk listCB21 4JQ: not on the flood risk listCB21 4JR: not on the flood risk listCB21 4JT: not on the flood risk listCB21 4LA: not on the flood risk listCB21 4LD: not on the flood risk listCB21 4LE: not on the flood risk listCB21 4LF: not on the flood risk listCB21 4LH: not on the flood risk listCB21 4LJ: not on the flood risk listCB21 4LL: not on the flood risk listCB21 4LN: not on the flood risk listCB21 4LQ: not on the flood risk listCB21 4LR: not on the flood risk listCB21 4LS: not on the flood risk listCB21 4LU: not on the flood risk listCB21 4LW: not on the flood risk listCB21 4LY: not on the flood risk listCB21 4NB: not on the flood risk listCB21 4ND: not on the flood risk listCB21 4NH: not on the flood risk listCB21 4NJ: not on the flood risk listCB21 4NL: not on the flood risk listCB21 4NP: not on the flood risk listCB21 4NS: not on the flood risk listCB21 4NW: not on the flood risk listCB21 4NX: not on the flood risk listCB21 4PA: not on the flood risk listCB21 4PB: not on the flood risk listCB21 4PD: not on the flood risk listCB21 4PE: not on the flood risk listCB21 4PF: not on the flood risk listCB21 4PG: not on the flood risk listCB21 4PN: not on the flood risk listCB21 4PR: not on the flood risk listCB21 4PS: not on the flood risk listCB21 4QA: not on the flood risk listCB21 4QB: not on the flood risk listCB21 4QD: not on the flood risk listCB21 4QE: not on the flood risk listCB21 4QF: not on the flood risk listCB21 4QG: not on the flood risk listCB21 4QH: not on the flood risk listCB21 4QN: not on the flood risk listCB21 4QP: not on the flood risk listCB21 4QQ: not on the flood risk listCB21 4QR: not on the flood risk listCB21 4QX: not on the flood risk listCB21 4QY: not on the flood risk listCB21 4QZ: not on the flood risk listCB21 4RA: not on the flood risk listCB21 4RB: not on the flood risk listCB21 4RD: not on the flood risk listCB21 4RE: not on the flood risk listCB21 4RF: not on the flood risk listCB21 4RJ: not on the flood risk listCB21 4RN: not on the flood risk listCB21 4RP: not on the flood risk listCB21 4RQ: not on the flood risk listCB21 4RS: not on the flood risk listCB21 4RT: not on the flood risk listCB21 4RW: not on the flood risk listCB21 4RX: not on the flood risk listCB21 4RY: not on the flood risk listCB21 4RZ: not on the flood risk listCB21 4SA: not on the flood risk listCB21 4SB: not on the flood risk listCB21 4SD: not on the flood risk listCB21 4SF: not on the flood risk listCB21 4SH: not on the flood risk listCB21 4SP: not on the flood risk listCB21 4SR: not on the flood risk listCB21 4SS: not on the flood risk listCB21 4ST: not on the flood risk listCB21 4SU: not on the flood risk listCB21 4SZ: not on the flood risk listCB21 4TB: not on the flood risk listCB21 4TD: not on the flood risk listCB21 4TE: not on the flood risk listCB21 4TF: not on the flood risk listCB21 4TG: not on the flood risk listCB21 4TH: not on the flood risk listCB21 4TJ: not on the flood risk listCB21 4TL: not on the flood risk listCB21 4TN: not on the flood risk listCB21 4TQ: not on the flood risk listCB21 4TR: not on the flood risk listCB21 4TW: not on the flood risk listCB21 4UA: not on the flood risk listCB21 4UB: not on the flood risk listCB21 4UF: not on the flood risk listCB21 4UH: not on the flood risk listCB21 4UQ: not on the flood risk listCB21 4UW: not on the flood risk listCB21 4UX: not on the flood risk listCB21 4XA: not on the flood risk listCB21 4XD: not on the flood risk listCB21 4XE: not on the flood risk listCB21 4XH: not on the flood risk listCB21 4XN: not on the flood risk listCB21 4XQ: not on the flood risk listCB21 4YL: not on the flood risk listCB21 4YS: not on the flood risk listCB21 5AA: not on the flood risk listCB21 5AB: not on the flood risk listCB21 5AD: not on the flood risk listCB21 5AE: not on the flood risk listCB21 5AF: not on the flood risk listCB21 5AG: not on the flood risk listCB21 5AH: not on the flood risk listCB21 5AJ: not on the flood risk listCB21 5AL: not on the flood risk listCB21 5AN: not on the flood risk listCB21 5AP: not on the flood risk listCB21 5AS: not on the flood risk listCB21 5AT: not on the flood risk listCB21 5AY: not on the flood risk listCB21 5AZ: not on the flood risk listCB21 5BA: not on the flood risk listCB21 5BB: not on the flood risk listCB21 5BF: not on the flood risk listCB21 5BG: not on the flood risk listCB21 5BN: not on the flood risk listCB21 5BT: not on the flood risk listCB21 5BU: not on the flood risk listCB21 5BW: not on the flood risk listCB21 5BX: not on the flood risk listCB21 5BY: not on the flood risk listCB21 5BZ: not on the flood risk listCB21 5DA: not on the flood risk listCB21 5DE: not on the flood risk listCB21 5DH: not on the flood risk listCB21 5DJ: not on the flood risk listCB21 5DL: not on the flood risk listCB21 5DQ: not on the flood risk listCB21 5DS: not on the flood risk listCB21 5DT: not on the flood risk listCB21 5DU: not on the flood risk listCB21 5DW: not on the flood risk listCB21 5DY: not on the flood risk listCB21 5DZ: not on the flood risk listCB21 5ED: not on the flood risk listCB21 5EF: not on the flood risk listCB21 5EG: not on the flood risk listCB21 5EH: not on the flood risk listCB21 5EJ: not on the flood risk listCB21 5EP: not on the flood risk listCB21 5EQ: not on the flood risk listCB21 5ER: not on the flood risk listCB21 5ET: not on the flood risk listCB21 5EU: not on the flood risk listCB21 5EY: not on the flood risk listCB21 5EZ: not on the flood risk listCB21 5GA: not on the flood risk listCB21 5GT: not on the flood risk listCB21 5HA: not on the flood risk listCB21 5HB: not on the flood risk listCB21 5HE: not on the flood risk listCB21 5HF: not on the flood risk listCB21 5HG: not on the flood risk listCB21 5HH: not on the flood risk listCB21 5HJ: not on the flood risk listCB21 5HN: not on the flood risk listCB21 5HQ: not on the flood risk listCB21 5HR: not on the flood risk listCB21 5HZ: not on the flood risk listCB21 5JA: not on the flood risk listCB21 5JB: not on the flood risk listCB21 5JD: not on the flood risk listCB21 5JE: not on the flood risk listCB21 5JF: not on the flood risk listCB21 5JG: not on the flood risk listCB21 5JH: not on the flood risk listCB21 5JL: not on the flood risk listCB21 5JP: not on the flood risk listCB21 5JQ: not on the flood risk listCB21 5JW: not on the flood risk listCB21 5JY: not on the flood risk listCB21 5JZ: not on the flood risk listCB21 5LA: not on the flood risk listCB21 5LB: not on the flood risk listCB21 5LD: not on the flood risk listCB21 5LE: not on the flood risk listCB21 5LF: not on the flood risk listCB21 5LP: not on the flood risk listCB21 5LQ: not on the flood risk listCB21 5LR: not on the flood risk listCB21 5LS: not on the flood risk listCB21 5LT: not on the flood risk listCB21 5LU: not on the flood risk listCB21 5LY: not on the flood risk listCB21 5NA: not on the flood risk listCB21 5NF: not on the flood risk listCB21 5NH: not on the flood risk listCB21 5NJ: not on the flood risk listCB21 5NL: not on the flood risk listCB21 5NQ: not on the flood risk listCB21 5NR: not on the flood risk listCB21 5NT: not on the flood risk listCB21 5NU: not on the flood risk listCB21 5NX: not on the flood risk listCB21 5NY: not on the flood risk listCB21 5NZ: not on the flood risk listCB21 5PA: not on the flood risk listCB21 5PB: not on the flood risk listCB21 5PE: not on the flood risk listCB21 5RH: not on the flood risk listCB21 5TA: not on the flood risk listCB21 5XA: not on the flood risk listCB21 5XB: not on the flood risk listCB21 5XE: not on the flood risk listCB21 5XG: not on the flood risk listCB21 5XY: not on the flood risk listCB21 6AA: not on the flood risk listCB21 6AD: not on the flood risk listCB21 6AF: not on the flood risk listCB21 6AG: not on the flood risk listCB21 6AH: not on the flood risk listCB21 6AJ: not on the flood risk listCB21 6AP: not on the flood risk listCB21 6AQ: not on the flood risk listCB21 6AR: not on the flood risk listCB21 6AS: not on the flood risk listCB21 6AT: not on the flood risk listCB21 6AU: not on the flood risk listCB21 6AW: not on the flood risk listCB21 6AX: not on the flood risk listCB21 6AY: not on the flood risk listCB21 6BB: not on the flood risk listCB21 6BD: not on the flood risk listCB21 6BE: not on the flood risk listCB21 6BH: not on the flood risk listCB21 6BN: not on the flood risk listCB21 6BP: not on the flood risk listCB21 6BQ: not on the flood risk listCB21 6BT: not on the flood risk listCB21 6BW: not on the flood risk listCB21 6BX: not on the flood risk listCB21 6BY: not on the flood risk listCB21 6BZ: not on the flood risk listCB21 6DA: not on the flood risk listCB21 6DB: not on the flood risk listCB21 6DD: not on the flood risk listCB21 6DE: not on the flood risk listCB21 6DF: not on the flood risk listCB21 6DG: not on the flood risk listCB21 6DH: not on the flood risk listCB21 6DJ: not on the flood risk listCB21 6DL: not on the flood risk listCB21 6DN: not on the flood risk listCB21 6DP: not on the flood risk listCB21 6DQ: not on the flood risk listCB21 6GH: not on the flood risk listCB21 6GS: not on the flood risk listCB21 6GT: not on the flood risk listCB21 6XR: not on the flood risk listCB21 4HT: low flood risk at worstCB21 4JD: low flood risk at worstCB21 4PP: low flood risk at worstCB21 4RG: low flood risk at worstCB21 5NS: low flood risk at worstCB21 4HS: medium flood risk at worstCB21 4HX: medium flood risk at worstCB21 4JY: medium flood risk at worstCB21 4RH: medium flood risk at worstCB21 5PF: medium flood risk at worstCB21 6AB: medium flood risk at worstCB21 6AE: medium flood risk at worstCB21 4NR: high flood riskCB21 4HE: high flood riskCB21 4NT: high flood riskCB21 4NU: high flood riskCB21 4PT: high flood riskCB21 4PW: high flood riskCB21 4RR: high flood riskCB21 4TP: high flood riskCB21 5LG: high flood riskCB21 5NE: high flood riskCB21 6GP: high flood riskCB21 6AN: high flood riskCB21 6BG: high flood riskCB21 6BJ: high flood riskCB21 6BL: high flood riskCB21 6BS: high flood riskCB21 6BU: high flood risk LintonCambridgeSawstonGreat Shelford and StaplefordFulbourn Map of every postcode in CB21, by flood risk Of the 446 postcodes in CB21 that ONS places, 17 have a home or business at high risk, 7 are at medium risk at worst, 6 are at low risk at worst and 416 are not on the Environment Agency's at-risk list. Places named: Linton, Cambridge, Sawston, Great Shelford and Stapleford. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 5 km. A1301M11A1304 LintonCambridgeSawstonGreat Shelford and Stapleford
  • A home or business at high risk: 17
  • At medium risk at worst: 7
  • At low risk at worst: 6
  • At very low risk only: 0
  • Not on the at-risk list: 416

Of the 446 postcodes in CB21 that ONS places, 17 have a home or business at high risk, 7 are at medium risk at worst, 6 are at low risk at worst and 416 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 52.1280, longitude 0.2812. 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

17 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.

CB21 4PW5 at high riskCB21 4RR5 at high riskCB21 6BU4 at high riskCB21 4NR4 at high riskCB21 6BS3 at high riskCB21 4HE3 at high riskCB21 6BL2 at high riskCB21 4NT2 at high riskCB21 5LG2 at high riskCB21 4TP1 at high riskCB21 6AN1 at high riskCB21 6GP1 at high risk

What broadband can you get in CB21?

Ofcom reports on 435 of the 446 postcodes in CB21. At 196 of them every home and business can get gigabit broadband, and at 6 some cannot get decent broadband (10 Mbit/s).

Postcodes where every home can get gigabit196 of 435
Postcodes where every home can get superfast372 of 435
Postcodes where some cannot get decent broadband6 of 435

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 CB21 at risk of flooding?

30 of the 446 postcodes in CB21 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 90 homes and businesses in an area at high or medium risk.

Homes and businesses in an area at risk, at 30 of 446 postcodes High: 38Medium: 52Low: 61

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 CB21?

Homes in CB21 sold for a typical £461,000 in the 12 months to August 2026, across 166 sales, down 4% on the 12 months before, HM Land Registry's figures show.

£461,000 typical price, the 12 months to August 2026
12 months to August 2025
£480,000
12 months to August 2026
£461,000

▼ down 4% on the 12 months before

Detached£617,500 85 sales
Semi-detached£412,500 52 sales
Terraced£340,000 26 sales
Flat or maisonette 3 sales, too few to price

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 CB21

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

CB21 4240 postcodesCB21 5149 postcodesCB21 657 postcodes
UK postcode format explained

Places in CB21

Towns and villages with postcodes in CB21, and how many each has here.

Linton postcodes,98Fulbourn postcodes,85Cambridge postcodes,1

Who covers CB21

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

  • South Cambridgeshire432
  • North West Essex13
  • Cambridge1

Police force areas

  • Cambridgeshire433
  • Essex13

Next to CB21

CB11 postcode district CB22 postcode district All CB districts Linton postcodes

"Next to" is by number: the districts before and after CB21 in the CB area.

Check a postcode

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