CB21 4SB

Balsham · South Cambridgeshire · England

Updated September 2026

Compare this postcode

Location overview

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Post town
Cambridge
Ward
Balsham
Local authority
South Cambridgeshire
Postcode district
CB21
Postcode sector
CB21 4

Nearby postcodes

Nearby postcode distances
Postcode Distance
CB21 4SH 219 m
CB21 4SA 290 m
CB21 4SD 494 m
CB21 4RY 529 m
CB21 4RT 680 m
Complete postcode fields and official codes
Postcode
CB21 4SB
Status
Current
Introduced
1 September 2006
Terminated
Not published
Postcode area
CB
Postcode district
CB21
Postcode sector
CB21 4
Latitude
52.120684
Longitude
0.362752
British National Grid easting
561,856
British National Grid northing
249,561

Statistical and administrative geographies

Country
England · E92000001
Region
East of England · E12000006
Local authority district
South Cambridgeshire · E07000012
Electoral ward
Balsham · E05011282
Parish or community
E04001850
Westminster constituency
South Cambridgeshire · E14001481
Output area
E00091907
Lower layer super output area
South Cambridgeshire 016B · E01018219
Middle layer super output area
South Cambridgeshire 016 · E02003790

Postcode source versions

Explore CB21

56 recorded sales at this postcode
Address Date Price
72, High Street, West Wickham, Cambridge, CB21 4SB 13 May 2024 £287,500
Spring View, High Street, West Wickham, Cambridge, CB21 4SB 11 April 2024 £610,000
104, High Street, West Wickham, Cambridge, CB21 4SB 23 August 2023 £1,250,000

Schools

Within 3.1 miles of this postcode

View all nearby schools
Open schools
1
Primary
1
Secondary
0
  1. Meadow Primary School

    Academy sponsor led

    3.2 km

Recorded crime

Within 1 mile of this postcode

View all nearby crime records
Published events
8
Months covered
12
Latest month
June 2026

Most recorded categories in this period

  • Anti social behaviour 3
  • Criminal damage and arson 3
  • Burglary 1
  • Vehicle crime 1

Census 2021

Population and age profile

Postcode residents
113

54 female, 59 male

Postcode households
40
Residents per household
2.8
CB21 4 residents
8,308

Age bands in CB21 4

Wider postcode sector
Age 0 to 14
15.5%

1,291 residents

Age 15 to 24
9.7%

811 residents

Age 25 to 44
19.2%

1,600 residents

Age 45 to 64
30.1%

2,504 residents

Age 65 and over
25.4%

2,116 residents

This postcode contained 1.4% of the sector's usual residents on Census Day. The age profile describes the wider CB21 4 sector, not people in this individual postcode.

Small counts are adjusted for privacy, so totals can differ slightly between Census tables.

Census Day: 21 March 2021. Sources: ONS/Nomis P001-P004 and ONS CT21_0228. Age table version 2024-04-08.

Fixed broadband coverage

Ofcom's predicted availability across all residential and commercial premises in this postcode in January 2026.

Superfast, 30 Mbit/s+
100%
Ultrafast, 100 Mbit/s+
0%
Ultrafast, 300 Mbit/s+
0%
Gigabit-capable
0%
Unable to receive decent fixed or FWA broadband
0%
Next Generation Access
100%
Decent broadband available from fixed wireless
0%

Predicted coverage, not measured speeds. Check availability for your address with a provider. Postcode-level full-fibre figures are not published in this release.

Source: Ofcom Connected Nations Spring 2026, version 2026-01-v2. Contains Ofcom data licensed under the Open Government Licence v3.0.

Nearby transport

  • Church Street

    BCT · Withersfield

    2.4 miles
  • Church Street

    BCT · Withersfield

    2.4 miles
  • Burton Hill

    BCT · Withersfield

    2.6 miles
  • Burton Hill

    BCT · Withersfield

    2.6 miles
  • Research Park

    BCT · Haverhill

    2.7 miles

Relative deprivation

English Indices of Deprivation 2025 for South Cambridgeshire 016B, the published LSOA linked to this postcode. Decile 1 contains the most deprived 10% of English LSOAs and decile 10 the least deprived 10%.

Overall IMD decile

7 of 10

Overall England rank

21,519 of 33,755

Income
7 of 10
Employment
8 of 10
Education and skills
8 of 10
Health and disability
9 of 10
Crime
9 of 10
Housing and services
1 of 10
Living environment
5 of 10

These are relative area statistics, not measures of an individual household, affluence or absolute change. They cannot be compared with indices for other UK nations. Source: English Indices of Deprivation 2025, version 2025-v2.

Flood risk

Environment Agency long-term indicators for the area around addresses in this postcode. They are not an assessment of any individual property and do not show current or forecast flooding.

High risk addresses
0
Medium risk addresses
0
Low risk addresses
2
Groundwater flood alert area
Unlikely

Source: Environment Agency flood-risk postcode search tool data, version 2026-06-18. Check the long-term risk for an individual area. © Environment Agency copyright and/or database right 2025. All rights reserved.

Evidence in context

Property market

The five-year median is £425,000 from 7 recorded sales in CB21 4SB. This is a recorded-sale statistic, not a current valuation.

The latest UK House Price Index average for South Cambridgeshire is £436,011 in June 2026, up 4.9% year on year.

Schools

1 open schools are in scope, including 1 primary and 0 secondary schools. Meadow Primary School is the nearest published school at 2.0 miles.

Counts describe active establishment records. They do not assess admissions, catchments or quality.

Recorded crime

8 published events cover 12 months, averaging 0.667 events per published month. The largest recorded category is Anti social behaviour with 3 events.

The source publishes anonymised street-level events. These figures are not a measure of safety for an individual address.