CM21 0LN

Much Hadham · East Hertfordshire · England

Updated September 2026

Compare this postcode

Location overview

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Local authority
East Hertfordshire
Postcode district
CM21
Postcode sector
CM21 0

Nearby postcodes

Nearby postcode distances
Postcode Distance
CM21 0LL 176 m
CM21 0BP 628 m
CM21 0LJ 687 m
CM21 0LF 806 m
CM21 0BW 930 m
Complete postcode fields and official codes
Postcode
CM21 0LN
Status
Terminated
Introduced
1 May 1994
Terminated
1 January 1995
Postcode area
CM
Postcode district
CM21
Postcode sector
CM21 0
Latitude
51.823297
Longitude
0.131566
British National Grid easting
547,000
British National Grid northing
216,000

Statistical and administrative geographies

Country
England · E92000001
Region
East of England · E12000006
Local authority district
East Hertfordshire · E07000242
Parish or community
E04004737
Westminster constituency
Hertford and Stortford · E14001283
Output area
E00119343
Lower layer super output area
East Hertfordshire 009C · E01023496
Middle layer super output area
East Hertfordshire 009 · E02004886

Postcode source versions

Explore CM21

Schools

Within 3.1 miles of this postcode

View all nearby schools
Open schools
19
Primary
13
Secondary
3
  1. Mandeville Primary School

    Community school

    1.1 km
  2. Leventhorpe

    Academy converter

    1.3 km
  3. Reedings Junior School

    Community school

    1.6 km

Recorded crime

Within 1 mile of this postcode

View all nearby crime records
Published events
310
Months covered
12
Latest month
June 2026

Most recorded categories in this period

  • Violence and sexual offences 143
  • Anti social behaviour 55
  • Vehicle crime 24
  • Burglary 16
  • Public order 16

Census 2021

Population and age profile

Postcode residents
Not supplied
Postcode households
Not supplied
Residents per household
Not available
CM21 0 residents
4,306

Age bands in CM21 0

Wider postcode sector
Age 0 to 14
16.7%

757 residents

Age 15 to 24
9.5%

431 residents

Age 25 to 44
20.6%

936 residents

Age 45 to 64
28.6%

1,298 residents

Age 65 and over
24.6%

1,118 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.

GP practices

3

within 5 km straight-line

  • CENTRAL SURGERY

    BELL STREET, SAWBRIDGEWORTH, CM21 9AQ

    ODS code E82100

    1.6 km

  • GARDENS AND JACOBS MEDICAL PARTNERSHIP

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

    ODS code Y01924

    1.8 km

  • OLD HARLOW HEALTH CENTRE

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

    ODS code F81056

    4.4 km

Nearby transport

  • Leventhorpe School

    BCT · Sawbridgeworth

    0.8 miles
  • Leventhorpe School

    BCT · Sawbridgeworth

    0.8 miles
  • Station Road

    BCT · Sawbridgeworth

    0.9 miles
  • Station Road

    BCT · Sawbridgeworth

    0.9 miles
  • Rivers Hospital

    BCT · High Wych

    1.1 miles

Relative deprivation

English Indices of Deprivation 2025 for East Hertfordshire 009C, 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

15,336 of 33,755

Income
8 of 10
Employment
4 of 10
Education and skills
6 of 10
Health and disability
7 of 10
Crime
7 of 10
Housing and services
2 of 10
Living environment
2 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.

Evidence in context

Schools

19 open schools are in scope, including 13 primary and 3 secondary schools. Mandeville 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

310 published events cover 12 months, averaging 25.833 events per published month. The largest recorded category is Violence and sexual offences with 143 events.

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