CM3 1AY

Broomfield and The Walthams · Chelmsford · England

Updated September 2026

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Location overview

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Local authority
Chelmsford
Constituency
North West Essex
Postcode district
CM3
Postcode sector
CM3 1

Nearby postcodes

Nearby postcode distances
Postcode Distance
CM3 1AX 151 m
CM3 1AZ 203 m
CM3 1EW 379 m
CM3 1EP 568 m
CM3 1EN 578 m
Complete postcode fields and official codes
Postcode
CM3 1AY
Status
Current
Introduced
1 January 1980
Terminated
Not published
Postcode area
CM
Postcode district
CM3
Postcode sector
CM3 1
Latitude
51.800461
Longitude
0.446717
British National Grid easting
568,802
British National Grid northing
214,143

Statistical and administrative geographies

Country
England · E92000001
Region
East of England · E12000006
Local authority district
Chelmsford · E07000070
Parish or community
E04003960
Westminster constituency
North West Essex · E14001402
Output area
E00109439
Lower layer super output area
Chelmsford 001B · E01021539
Middle layer super output area
Chelmsford 001 · E02004485

Postcode source versions

Explore CM3

Schools

Within 3.1 miles of this postcode

View all nearby schools
Open schools
6
Primary
4
Secondary
1
  1. Great Waltham Church of England Voluntary Controlled Primary School

    Voluntary controlled school

    1.1 km
  2. Little Waltham Church of England Voluntary Aided Primary School

    Voluntary aided school

    2.3 km
  3. Ford End Church of England Primary School

    Academy converter

    2.7 km

Recorded crime

Within 1 mile of this postcode

View all nearby crime records
Published events
72
Months covered
12
Latest month
June 2026

Most recorded categories in this period

  • Violence and sexual offences 24
  • Other theft 11
  • Burglary 8
  • Criminal damage and arson 7
  • Vehicle crime 6

Census 2021

Population and age profile

Postcode residents
8

3 female, 5 male

Postcode households
2
Residents per household
4.0
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.

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+
66.7%
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
66.7%
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.

GP practices

1

within 5 km

  • LITTLE WALTHAM & GT NOTLEY SURGERY

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

    ODS code F81105

    2.6 km

Main GP practices only; branch surgeries are excluded. Distances are straight-line. Contact the practice to check registration, services, opening hours and appointments.

Source acquired on 2026-09-05. Contains information from NHS England, licenced under the current version of the Open Government Licence.

Nearby transport

  • Penden Corner

    BCT · Great Waltham

    0.4 miles
  • Penden Corner

    BCT · Great Waltham

    0.4 miles
  • Crowbush House

    BCT · Great Waltham

    0.6 miles
  • Crowbush House

    BCT · Great Waltham

    0.6 miles
  • The Green Man

    BCT · Great Waltham

    0.6 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

Schools

6 open schools are in scope, including 4 primary and 1 secondary schools. Great Waltham Church of England Voluntary Controlled Primary School is the nearest published school at 0.7 miles.

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

Recorded crime

72 published events cover 12 months, averaging 6 events per published month. The largest recorded category is Violence and sexual offences with 24 events.

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