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CM3 1AU

Broomfield and The Walthams · Chelmsford · England

Updated September 2026

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Location overview

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Ward
Broomfield and The Walthams
Local authority
Chelmsford
Constituency
North West Essex
Postcode district
CM3
Postcode sector
CM3 1

Nearby postcodes

Nearby postcode distances
Postcode Distance
CM3 1AT 26 m
CM3 1AS 65 m
CM3 1EU 116 m
CM3 1AR 134 m
CM3 1ET 153 m
Complete postcode fields and official codes
Postcode
CM3 1AU
Status
Current
Introduced
1 January 1980
Terminated
Not published
Postcode area
CM
Postcode district
CM3
Postcode sector
CM3 1
Latitude
51.795492
Longitude
0.457311
British National Grid easting
569,551
British National Grid northing
213,615

Statistical and administrative geographies

Country
England · E92000001
Region
East of England · E12000006
Local authority district
Chelmsford · E07000070
Electoral ward
Broomfield and The Walthams · E05004098
Parish or community
E04003960
Westminster constituency
North West Essex · E14001402
Output area
E00109440
Lower layer super output area
Chelmsford 001B · E01021539
Middle layer super output area
Chelmsford 001 · E02004485

Postcode source versions

Explore CM3

Use the wider postcode district to compare the same evidence across more locations.

Schools

Within 3.1 miles of this postcode

View all nearby schools
Open schools
10
Primary
5
Secondary
2

  1. Great Waltham Church of England Voluntary Controlled Primary School

    Voluntary controlled school

    367 m

  2. Little Waltham Church of England Voluntary Aided Primary School

    Voluntary aided school

    1.4 km

  3. The Belsteads School

    Other independent special school

    2.7 km

Recorded crime

Within 1 mile of this postcode

View all nearby crime records
Published events
103
Months covered
12
Latest month
June 2026

Most recorded categories in this period

  • Violence and sexual offences 33
  • Vehicle crime 14
  • Other theft 11
  • Burglary 10
  • Public order 9

Census 2021

Population and age profile

Postcode residents
6

4 female, 2 male

Postcode households
2
Residents per household
3.0
CM3 1 residents
5,890

Age bands in CM3 1

Wider postcode sector
Age 0 to 14
18.7%

1,133 residents

Age 15 to 24
10.6%

639 residents

Age 25 to 44
21.9%

1,328 residents

Age 45 to 64
29.2%

1,769 residents

Age 65 and over
19.6%

1,186 residents

This postcode contained 0.1% of the sector's usual residents on Census Day. The age profile describes the wider CM3 1 sector, not people in this individual postcode.

How to read these estimates
The standard postcode headcounts and the commissioned age table are separate ONS outputs. Small counts are disclosure-controlled, and totals can differ slightly between tables. Coverage is England and Wales only.

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+
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%
Coverage is a modelled postcode-level snapshot, not a speed test or a guarantee for a named property. Check availability with providers before making a decision. Ofcom does not publish postcode-level full-fibre coverage in this release for commercial-confidentiality reasons.

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

NHS ODS

GP practices

1

within 5 km

  • LITTLE WALTHAM & GT NOTLEY SURGERY

    30 BROOK HILL, LITTLE WALTHAM, CHELMSFORD, CM3 3LL

    ODS code F81105

    1.6 km

Organisation records, not service availability
These are records marked active in NHS England's Organisation Data Service for England and Wales. Branch surgeries, pharmacies, dentists and hospitals are not included. They do not confirm patient registration, services, opening hours, appointments or care quality. Distances are straight-line from the postcode point.

Source acquired on 2026-09-03. Contains information from NHS England, licenced under the current version of the Open Government Licence.

Nearby transport

  • Crowbush House

    BCT · Great Waltham

    0.0 miles

  • Crowbush House

    BCT · Great Waltham

    0.0 miles

  • Memorial

    BCT · Great Waltham

    0.1 miles

  • Memorial

    BCT · Great Waltham

    0.1 miles

  • Hatchfields

    BCT · Great Waltham

    0.2 miles

Relative deprivation

English Indices of Deprivation 2025 for Chelmsford 001B, 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

5 of 10

Overall England rank

15,270 of 33,755

Income
5 of 10
Employment
6 of 10
Education and skills
6 of 10
Health and disability
8 of 10
Crime
7 of 10
Housing and services
2 of 10
Living environment
1 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
0
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

A factual reading of the data in this report's scope. It is not a location score or a recommendation.

Schools

Published establishments

10 open schools are in scope, including 5 primary and 2 secondary schools. Great Waltham Church of England Voluntary Controlled Primary School is the nearest published school at 367 m.

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

Recorded crime

Published police records

103 published events cover 12 months, averaging 8.583 events per published month. The largest recorded category is Violence and sexual offences with 33 events.

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