# CB21 4BB: area report for a postcode in South Cambridgeshire

CB21 4BB is a postcode in South Cambridgeshire.

A postcode has no figures of its own: each layer is published for whole councils, neighbourhoods or exact points. The figures below are for the whole of South Cambridgeshire. Open the map at CB21 4BB for neighbourhoods and points.

In: [South Cambridgeshire](https://openindex.co.uk/south-cambridgeshire) › [CB21](https://openindex.co.uk/postcode/cb21) › [CB21 4](https://openindex.co.uk/postcode/cb21-4)

## Around this postcode

- **0 crimes within 500 m**: August, none in July either. South Cambridgeshire 016B: 35 a year per 1,000 people. (Map point) https://openindex.co.uk/map/street-crime?around=0.3876,52.1211,CB214BB
- **Dullingham, 9.1 km**: The nearest station, in a straight line. (Exact point) https://openindex.co.uk/map/stations?around=0.3876,52.1211,CB214BB
- **No schools within 800 m**: None found within 1.6 km. (Exact point) https://openindex.co.uk/map/schools?around=0.3876,52.1211,CB214BB
- **No property in CB21 4BB listed at risk of flooding**: From rivers or the sea, with flood defences, in the Environment Agency's assessment. (Postcode) https://openindex.co.uk/map/flood-risk-by-postcode?around=0.3876,52.1211,CB214BB
- **England’s least deprived 40%**: This neighbourhood, South Cambridgeshire 016B. (Neighbourhood) https://openindex.co.uk/map/deprivation-england?around=0.3876,52.1211,CB214BB
- **£441,410 average price**: For the whole of South Cambridgeshire, August 2026. (Council) https://openindex.co.uk/map/house-prices?around=0.3876,52.1211,CB214BB
- **No GP practices within 1 km**: None found within 2 km. (Postcode) https://openindex.co.uk/map/gp-practices?around=0.3876,52.1211,CB214BB
- **No supermarkets within 1 km**: None found within 2 km. (Exact point) https://openindex.co.uk/map/supermarkets?around=0.3876,52.1211,CB214BB
- **Gigabit broadband for every home and business at CB21 4BB**: Superfast for 100%. What can be ordered, January 2026. (Postcode) https://openindex.co.uk/map/broadband-by-postcode?around=0.3876,52.1211,CB214BB
- **Moderate road and rail noise at CB21 4BB**: Road 55 dB, rail under 40 dB or not modelled (Lden, modelled for 2021) (Postcode) https://openindex.co.uk/map/noise-by-postcode?around=0.3876,52.1211,CB214BB
- **Not in a radon Affected Area**: Under 1% of homes in this 1 km square are estimated to be at or above the radon Action Level. (1 km grid) https://openindex.co.uk/map/radon?around=0.3876,52.1211,CB214BB
- **7.0 µg/m³ nitrogen dioxide**: Modelled yearly average for this 1 km square, 2025. (1 km grid) https://openindex.co.uk/map/nitrogen-dioxide?around=0.3876,52.1211,CB214BB

## Within 1 km

## Key figures

- **Average house price: £441,410** (August 2026). South Cambridgeshire’s average house price was £441,410 in August 2026 (HM Land Registry). Up 0.2% in a year. Source: UK House Price Index, August 2026. Published 21 October 2026.
- **Median full-time pay: £48,916** (2025). Full-time workers living in South Cambridgeshire earned a median of £48,916 in 2025 (ONS earnings survey). 20th highest paid of 348. Source: Annual Survey of Hours and Earnings, 2025. Published 23 October 2025.
- **House price to pay: 9.0×** (2025). A home in South Cambridgeshire costs 9.0 times local full-time pay. Joint 90th least affordable of 348. Source: Worked out by Open Index from the UK House Price Index and the ONS earnings survey. Published 21 October 2026.
- **Deprivation score: 9.3** (2025). South Cambridgeshire has a deprivation score of 9.3 in the English Indices of Deprivation 2025 (MHCLG). 14th least deprived of 296. Source: English Indices of Deprivation 2025, 2025. Published 30 October 2025.

## South Cambridgeshire 016B (Neighbourhood)

- **Deprivation score: 12.9** (2025). South Cambridgeshire 016B has a deprivation score of 12.9 in the English Indices of Deprivation 2025 (MHCLG). Joint 12,155th least deprived of 33,755. Source: English Indices of Deprivation 2025, 2025. Published 30 October 2025.
- **Median sale price: £467,557** (2025). The median price paid for a home in South Cambridgeshire 016B was £467,557 in 2025. 5,741st most expensive of 31,750. Source: Worked out by Open Index from HM Land Registry Price Paid Data. Published 28 September 2026.
- **Population: 1,433** (2021). South Cambridgeshire 016B had 1,433 usual residents at the census (ONS Census 2021). Joint 19,712th least populated of 46,844. Source: Census 2021, England and Wales and Scotland's Census 2022 and Census 2021, Northern Ireland, 2021. Published 21 July 2026.
- **Gigabit broadband coverage: 15.6%** (January 2026). In South Cambridgeshire 016B, 15.6% of homes and businesses could get gigabit-capable broadband in January 2026 (Ofcom). UK 87.8%. Source: Connected Nations (Ofcom), January 2026. Published 13 May 2026.

## CB21 (Postcode district)

- **Median sale price: £470,000** (2025). The median price paid for a home in CB21 was £470,000 in 2025. Joint 353rd most expensive of 2,235. Source: Worked out by Open Index from HM Land Registry Price Paid Data. Published 28 September 2026.
- **Population: 16,042** (2021). CB21 had 16,042 usual residents at the census (ONS Census 2021). 1,059th least populated of 2,756. Source: Census 2021, England and Wales and Scotland's Census 2022 and Census 2021, Northern Ireland, 2021. Published 21 July 2026.
- **People in radon Affected Area squares: 12%** (2022). About 12% of people in CB21 live in a 1 km square that the radon atlas marks as a radon Affected Area. UK 44%. Source: Worked out by Open Index from the UKHSA and BGS radon atlas and census output areas. Published 1 December 2022.
- **Gigabit broadband coverage: 64.2%** (January 2026). In CB21, 64.2% of homes and businesses could get gigabit-capable broadband in January 2026 (Ofcom). UK 87.8%. Source: Connected Nations (Ofcom), January 2026. Published 13 May 2026.

## About

- Type: Postcode
- Council: [South Cambridgeshire](https://openindex.co.uk/south-cambridgeshire)
- Centre: 52.1211, 0.3876

Council: [South Cambridgeshire](https://openindex.co.uk/south-cambridgeshire) (District, 100%).

## Your MP

- [South Cambridgeshire](https://openindex.co.uk/constituency/south-cambridgeshire): Pippa Heylings (Liberal Democrat), MP since July 2024.

As of 18 October 2026. Contains Parliamentary information licensed under the Open Parliament Licence v3.0. Source: UK Parliament, Members API.

## Sources

- [Street-level crime](https://openindex.co.uk/sources/street-crime), August 2026 (Map point)
- [Rail and Tube stations](https://openindex.co.uk/sources/stations), 2024/25 (Exact point)
- [Schools](https://openindex.co.uk/sources/schools) (Exact point)
- [Flood risk by postcode](https://openindex.co.uk/sources/flood-risk-by-postcode), June 2026 (Postcode)
- [English Indices of Deprivation 2025](https://openindex.co.uk/sources/deprivation-england), 2025 (Neighbourhood)
- [Average house price](https://openindex.co.uk/sources/house-prices), August 2026 (Council)
- [GP practices](https://openindex.co.uk/sources/gp-practices) (Postcode)
- [Supermarkets](https://openindex.co.uk/sources/supermarkets) (Exact point)
- [Broadband by postcode](https://openindex.co.uk/sources/broadband-by-postcode), January 2026 (Postcode)
- [Road and rail noise by postcode](https://openindex.co.uk/sources/noise-by-postcode), 2021 (Postcode)
- [Radon potential](https://openindex.co.uk/sources/radon) (1 km grid)
- [Nitrogen dioxide (NO2)](https://openindex.co.uk/sources/nitrogen-dioxide), 2025 (1 km grid)

On the map: https://openindex.co.uk/map/sold-prices?around=0.3876,52.1211,CB214BB

## How to cite

Source: Open Index, openindex.co.uk. Link to this page, https://openindex.co.uk/postcode/cb21-4bb.

Open Index's own text and the figures it works out are licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source data keeps its publishers' licences, named with each figure. Give each figure's period and source with it.

Snapshot 2026.10.9, https://doi.org/10.5281/zenodo.23508848. The HTML page: https://openindex.co.uk/postcode/cb21-4bb