CM20 3AF

Mark Hall · Harlow · England

Updated September 2026

Compare this postcode

Location overview

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Local authority
Harlow
Constituency
Harlow
Postcode district
CM20
Postcode sector
CM20 3

Nearby postcodes

Nearby postcode distances
Postcode Distance
CM20 3FF 20 m
CM20 3FG 20 m
CM20 3BS 44 m
CM20 3AB 64 m
CM20 3JN 66 m
Complete postcode fields and official codes
Postcode
CM20 3AF
Status
Current
Introduced
1 January 1980
Terminated
Not published
Postcode area
CM
Postcode district
CM20
Postcode sector
CM20 3
Latitude
51.775122
Longitude
0.112728
British National Grid easting
545,857
British National Grid northing
210,605

Statistical and administrative geographies

Country
England · E92000001
Region
East of England · E12000006
Local authority district
Harlow · E07000073
Electoral ward
Mark Hall · E05015686
Parish or community
E43000064
Westminster constituency
Harlow · E14001267
Output area
E00110990
Lower layer super output area
Harlow 002B · E01021845
Middle layer super output area
Harlow 002 · E02004545

Postcode source versions

Explore CM20

Schools

Within 3.1 miles of this postcode

View all nearby schools
Open schools
43
Primary
31
Secondary
7
  1. St Alban's Catholic Academy

    Academy converter

    304 m
  2. Burnt Mill Academy

    Academy converter

    377 m
  3. Cooks Spinney Primary Academy and Nursery

    Academy sponsor led

    483 m

Recorded crime

Within 1 mile of this postcode

View all nearby crime records
Published events
4,405
Months covered
12
Latest month
June 2026

Most recorded categories in this period

  • Violence and sexual offences 1,638
  • Shoplifting 564
  • Public order 381
  • Criminal damage and arson 333
  • Anti social behaviour 293

Census 2021

Population and age profile

Postcode residents
Not supplied
Postcode households
Not supplied
Residents per household
Not available
CM20 3 residents
11,736

Age bands in CM20 3

Wider postcode sector
Age 0 to 14
20.5%

2,426 residents

Age 15 to 24
11.5%

1,355 residents

Age 25 to 44
28.8%

3,401 residents

Age 45 to 64
24.3%

2,872 residents

Age 65 and over
15%

1,772 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

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
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.

GP practices

10

within 5 km

  • NUFFIELD HOUSE HEALTH CENTRE

    NUFFIELD HOUSE SURGERY, THE STOW, HARLOW, CM20 3AX

    ODS code F81120

    76 m

  • SYDENHAM HOUSE SURGERY

    SYDENHAM HOUSE, MONSWICK ROAD, LONG LEY, HARLOW, CM20 3NT

    ODS code F81619

    656 m

  • CHURCH LANGLEY MEDICAL PRACTICE

    CHURCH LANGLEY WAY, HARLOW, CM17 9TG

    ODS code F81078

    1.6 km

  • ADDISON HOUSE - HAQUE PRACTICE

    ADDISON HOUSE, HARLOW, CM20 1DS

    ODS code F81181

    1.7 km

  • OLD HARLOW HEALTH CENTRE

    JENNER HSE, GARDEN TCE RD, HARLOW, CM17 0AX

    ODS code F81056

    1.8 km

  • THE HAMILTON PRACTICE

    KEATS HOUSE, THE FAIRWAY, BUSHFAIR, HARLOW, CM18 6LY

    ODS code F81047

    2.0 km

  • THE ROSS PRACTICE

    KEATS HOUSE, BUSH FAIR, HARLOW, CM18 6LY

    ODS code F81106

    2.0 km

  • LISTER MEDICAL CENTRE

    LISTER HOUSE HEALTH CENTRE, ABERCROMBIE WAY, HARLOW, CM18 6YJ

    ODS code F81027

    2.8 km

  • GARDENS AND JACOBS MEDICAL PARTNERSHIP

    JACOBS & GARDENS NEUROLOGICAL CTRS, HIGH WYCH ROAD, SAWBRIDGEWORTH, CM21 0HH

    ODS code Y01924

    3.8 km

  • CENTRAL SURGERY

    BELL STREET, SAWBRIDGEWORTH, CM21 9AQ

    ODS code E82100

    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

  • The Stow Lower

    BCT · Harlow

    0.0 miles
  • Minchen Road

    BCT · Mark Hall

    0.0 miles
  • The Stow Lower

    BCT · Harlow

    0.1 miles
  • Moot House

    BCT · Mark Hall

    0.1 miles
  • Moot House

    BCT · Mark Hall

    0.1 miles

Relative deprivation

English Indices of Deprivation 2025 for Harlow 002B, 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

3 of 10

Overall England rank

9,117 of 33,755

Income
2 of 10
Employment
3 of 10
Education and skills
3 of 10
Health and disability
5 of 10
Crime
2 of 10
Housing and services
5 of 10
Living environment
7 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

43 open schools are in scope, including 31 primary and 7 secondary schools. St Alban's Catholic Academy is the nearest published school at 304 m.

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

Recorded crime

4,405 published events cover 12 months, averaging 367.083 events per published month. The largest recorded category is Violence and sexual offences with 1,638 events.

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