CM20 postcode area · Harlow
The CM20 postcode district spans 7 neighbourhoods (MSOAs) in East Hertfordshire, Harlow. Area Scores range from 25 to 89 across them. Every full CM20 postcode falls within one of the neighbourhoods below.
In summary
There is a sharp split within the CM20 district: Sawbridgeworth scores 89 out of 100 (#725 of 6,856 nationally) while Passmores & The High sits at 26 — neighbours on the map, 64 points apart on the index. It mixes both ends of the national picture — 3 neighbourhoods in the least-deprived third of England and 3 in the most-deprived third. Median prices range from £295,000 in Passmores & The High to £490,000 in Much Hadham & Hunsdon. Note that the district straddles 2 local authorities — East Hertfordshire and Harlow — so its neighbourhoods answer to different councils.
Living here
Income: ONS model-based estimates (FYE 2023). Crime: data.police.uk, recorded incidents. Age & tenure: Census 2021. All OGL v3.0 — methodology.
House prices in the CM20 district
| Neighbourhood | Nat. rank | Area score | Median price |
|---|---|---|---|
| SawbridgeworthEast Hertfordshire | 725 | 89 | £452,500 |
| Old Harlow & NewhallHarlow | 2,027 | 70 | £410,000 |
| Much Hadham & HunsdonEast Hertfordshire | 2,144 | 69 | £490,000 |
| Little Parndon & Hare StreetHarlow | 4,317 | 37 | £322,500 |
| NettleswellHarlow | 4,646 | 32 | £305,000 |
| Mark Hall & TemplefieldsHarlow | 5,078 | 26 | £320,000 |
| Passmores & The HighHarlow | 5,091 | 26 | £295,000 |
People living in CM20 Census 2021
Age
Tenure
Households
Work (top occupations)
Professional 18% · Managers & directors 13% · Associate professional 12%
All occupation groups
| Professional | 18% |
| Managers & directors | 13% |
| Associate professional | 12% |
| Elementary | 11% |
| Skilled trades | 11% |
| Administrative | 10% |
| Caring & leisure | 10% |
| Process & plant | 8% |
| Sales & customer service | 7% |
Ethnic group
Religion & identity
Christian 46% · No religion 42% · Muslim 4%
Born outside the UK: 17%
Census 2021 (ONS), Crown copyright, OGL v3.0. Shares are of each question's own respondents (e.g. education is % of residents aged 16+). Figures date from March 2021 and change slowly between censuses.
Nearby areas
Postcode districts around CM20.
A postcode district overlaps several neighbourhoods, so per-neighbourhood figures are shown alongside the district-wide medians — neighbouring areas can differ a lot. Neighbourhood (MSOA) boundaries contain ONS data © Crown copyright and database right 2025, Open Government Licence v3.0.