CM3 3NU

Broomfield and The Walthams · Chelmsford · England

Updated September 2026

Compare this postcode

Location overview

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Post town
Chelmsford
Local authority
Chelmsford
Constituency
North West Essex
Postcode district
CM3
Postcode sector
CM3 3

Nearby postcodes

Nearby postcode distances
Postcode Distance
CM3 3LW 98 m
CM3 3LP 103 m
CM3 3NT 118 m
CM3 3NX 145 m
CM3 3LL 150 m
Complete postcode fields and official codes
Postcode
CM3 3NU
Status
Current
Introduced
1 December 1998
Terminated
Not published
Postcode area
CM
Postcode district
CM3
Postcode sector
CM3 3
Latitude
51.787731
Longitude
0.475333
British National Grid easting
570,823
British National Grid northing
212,794

Statistical and administrative geographies

Country
England · E92000001
Region
East of England · E12000006
Local authority district
Chelmsford · E07000070
Parish or community
E04013171
Westminster constituency
North West Essex · E14001402
Output area
E00109444
Lower layer super output area
Chelmsford 001C · E01021540
Middle layer super output area
Chelmsford 001 · E02004485

Postcode source versions

Explore CM3

28 recorded sales at this postcode
Address Date Price
16, Winckford Close, Little Waltham, Chelmsford, CM3 3NU 12 July 2022 £950,000
8, Winckford Close, Little Waltham, Chelmsford, CM3 3NU 5 February 2021 £850,000
14, Winckford Close, Little Waltham, Chelmsford, CM3 3NU 16 January 2020 £846,000

Schools

Within 3.1 miles of this postcode

View all nearby schools
Open schools
24
Primary
14
Secondary
4
  1. Little Waltham Church of England Voluntary Aided Primary School

    Voluntary aided school

    382 m
  2. The Belsteads School

    Other independent special school

    1.2 km
  3. Great Waltham Church of England Voluntary Controlled Primary School

    Voluntary controlled school

    1.4 km

Recorded crime

Within 1 mile of this postcode

View all nearby crime records
Published events
482
Months covered
12
Latest month
June 2026

Most recorded categories in this period

  • Violence and sexual offences 266
  • Public order 43
  • Criminal damage and arson 42
  • Other theft 40
  • Vehicle crime 27

Census 2021

Population and age profile

Postcode residents
49

26 female, 23 male

Postcode households
19
Residents per household
2.6
CM3 3 residents
6,831

Age bands in CM3 3

Wider postcode sector
Age 0 to 14
20.2%

1,287 residents

Age 15 to 24
10.8%

689 residents

Age 25 to 44
26.5%

1,692 residents

Age 45 to 64
25.1%

1,598 residents

Age 65 and over
17.4%

1,108 residents

This postcode contained 0.7% of the sector's usual residents on Census Day. The age profile describes the wider CM3 3 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+
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%

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

3

within 5 km

  • LITTLE WALTHAM & GT NOTLEY SURGERY

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

    ODS code F81105

    150 m

  • CHELMER MEDICAL PARTNERSHIP

    20 MERLIN PLACE, CHELMSFORD, CM1 4HW

    ODS code F81122

    4.4 km

  • NORTH CHELMSFORD NHS HCC

    2 WHITE HART LANE, CHELMSFORD, CM2 5EF

    ODS code Y02611

    4.8 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 2026-09-03. Contains information from NHS England, licenced under the current version of the Open Government Licence.

Nearby transport

  • Little Waltham Bridge

    BCT · Little Waltham

    0.0 miles
  • Little Waltham Bridge

    BCT · Little Waltham

    0.1 miles
  • Church Hill

    BCT · Little Waltham

    0.1 miles
  • Church Hill

    BCT · Little Waltham

    0.1 miles
  • The White Hart

    BCT · Little Waltham

    0.2 miles

Relative deprivation

English Indices of Deprivation 2025 for Chelmsford 001C, 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

16,260 of 33,755

Income
6 of 10
Employment
6 of 10
Education and skills
6 of 10
Health and disability
9 of 10
Crime
3 of 10
Housing and services
2 of 10
Living environment
3 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
1
Medium risk addresses
0
Low risk addresses
7
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 £950,000 from 1 recorded sale in CM3 3NU. This is a recorded-sale statistic, not a current valuation.

The latest UK House Price Index average for Chelmsford is £383,103 in June 2026, down 1.2% year on year.

Schools

24 open schools are in scope, including 14 primary and 4 secondary schools. Little Waltham Church of England Voluntary Aided Primary School is the nearest published school at 382 m.

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

Recorded crime

482 published events cover 12 months, averaging 40.167 events per published month. The largest recorded category is Violence and sexual offences with 266 events.

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