CM11

UK postcode district

Updated September 2026

District overview

Postcode units
604
Current units
453
Coordinate coverage
100%
Electoral wards
4

Coverage context

Countries represented
England
English regions represented
East of England
Local authority codes
2
Terminated postcode units
151

Postcode sectors in CM11

Choose a sector to browse its complete postcode-unit directory.

2 sectors
10,475 recorded sales at this postcode
Address Date Price
29, Salesbury Drive, Billericay, CM11 2JH 24 July 2026 £397,500
6, Dedham Close, Billericay, CM11 2EB 20 July 2026 £455,000
1a, Little Norsey Road, Billericay, CM11 1BN 9 July 2026 £700,000

Schools

Across this district

View schools report
Open schools
6
Primary
5
Secondary
0

Recorded crime

Across this district

View crime report
Published events
826
Months covered
12
Latest month
June 2026

Most recorded categories in this period

  • Violence and sexual offences 363
  • Vehicle crime 79
  • Other theft 70
  • Criminal damage and arson 65
  • Anti social behaviour 56

Census 2021

Population and age profile

CM11 usual residents
19,059
Age-profile population
19,143

Age bands in CM11

Postcode district
Age 0 to 14
17.4%

3,336 residents

Age 15 to 24
10.3%

1,974 residents

Age 25 to 44
22.6%

4,321 residents

Age 45 to 64
28.2%

5,390 residents

Age 65 and over
21.5%

4,122 residents

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

The median Ofcom availability percentage across 444 current postcode units in this district. Each postcode is weighted equally, not by premises.

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

396 postcode units had 100% superfast coverage, 301 had 100% gigabit-capable coverage, and 1 had at least some premises without decent fixed or fixed-wireless access.

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.

Evidence in context

Property market

The five-year median is £475,000 from 1,393 recorded sales in CM11. This is a recorded-sale statistic, not a current valuation.

The latest UK House Price Index average for Basildon is £360,294 in June 2026, down 1.0% year on year.

Schools

6 open schools are in scope, including 5 primary and 0 secondary schools.

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

Recorded crime

826 published events cover 12 months, averaging 68.833 events per published month. The largest recorded category is Violence and sexual offences with 363 events.

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