CM20 3EF maps, stats, and open data
CM20 3EF lies on Harefield in Harlow. CM20 3EF is located in the Mark Hall electoral ward, within the local authority district of Harlow and the English Parliamentary constituency of Harlow. The Sub Integrated Care Board (ICB) Location is NHS Hertfordshire and West Essex ICB - 07H and the police force is Essex. This postcode has been in use since January 1980.
CM20 3EF maps
Source: OS VectorMap District (Ordnance Survey)
Licence: Open Government Licence (requires attribution)
CM20 3EF geodata
| Easting | 546248 |
| Northing | 210093 |
| Latitude | 51.770414 |
| Longitude | 0.118148 |
Where is CM20 3EF?
| Street | Harefield |
| Town/City | Harlow |
| Country | England |
| Postcode District | CM20 |
CM20 3EF Elevation
Elevation or altitude of CM20 3EF as distance above sea level:
| Metres | Feet | |
|---|---|---|
| Elevation | 70m | 230ft |
Elevation is measured from the approximate centre of the postcode, to the nearest point on an OS contour line from OS Terrain 50, which has contour spacing of ten vertical metres.
➜ How high above sea level am I? Find the elevation of your current position using your device's GPS.
Politics
| Ward | Mark Hall |
|---|---|
| Constituency | Harlow |
House Prices
Sales of detached houses in CM20 3EF
2001 9 MAR £127,000 |
Licence: Contains HM Land Registry data © Crown copyright and database right 2026. This data is licensed under the Open Government Licence v3.0.
Transport
Nearest bus stops to CM20 3EF
| Pennymead (Momples Road) | Mark Hall | 43m |
| Pennymead (Momples Road) | Mark Hall | 74m |
| Blackbush Spring (Minchen Road) | Mark Hall | 115m |
| Blackbush Spring (Minchen Road) | Mark Hall | 134m |
| Quarry Spring (Momples Road) | Harlow | 166m |
Nearest railway stations to CM20 3EF
| Harlow Town Station | 2km |
| Harlow Mill Station | 2.4km |
| Sawbridgeworth Station | 5.7km |
Broadband
Broadband access in CM20 3EF (2020 data)
| Percentage of properties with Next Generation Access | 100.0% |
| Percentage of properties with Superfast Broadband | 100.0% |
| Percentage of properties with Ultrafast Broadband | 100.0% |
| Percentage of properties with Full Fibre Broadband | 0.0% |
Superfast Broadband is between 30Mbps and 300Mbps
Ultrafast Broadband is > 300Mbps
Broadband speed in CM20 3EF (2019 data)
Download
| Median download speed | 85.0Mbps |
| Average download speed | 101.5Mbps |
| Maximum download speed | 200.00Mbps |
Upload
| Median upload speed | 5.4Mbps |
| Average upload speed | 6.0Mbps |
| Maximum upload speed | 12.38Mbps |
Broadband limitations in CM20 3EF (2020 data)
| Percentage of properties unable to receive 2Mbps | 0.0% |
| Percentage of properties unable to receive 5Mbps | 0.0% |
| Percentage of properties unable to receive 10Mbps | 0.0% |
| Percentage of properties unable to receive 30Mbps | 0.0% |
CM20 3EF gas and electricity consumption
Estimated total energy consumption in CM20 3EF by fuel type, 2015.
Gas
| Consumption (kWh) | 277,725 |
|---|---|
| Meter count | 16 |
| Mean (kWh/meter) | 17,358 |
| Median (kWh/meter) | 16,000 |
Electricity
| Consumption (kWh) | 77,399 |
|---|---|
| Meter count | 16 |
| Mean (kWh/meter) | 4,837 |
| Median (kWh/meter) | 5,111 |
- Consumption: The estimated total energy consumption, in kWh, across all meters in CM20 3EF, for 2015.
- Meter count: The total number of meters in CM20 3EF.
- Mean: The mean average consumption per meter, in kWh.
- Median: The median average consumption per meter, in kWh.
Source: Postcode level electricity estimates: 2015 (experimental)
Licence: Open Government Licence
Deprivation
66.5% of English postcodes are less deprived than CM20 3EF:Food Standards Agency
Three nearest food hygiene ratings to CM20 3EF (metres)
➜ Get more ratings from the Food Standards Agency
Nearest post box to CM20 3EF
| Last Collection | |||
|---|---|---|---|
| Location | Mon-Fri | Sat | Distance |
| Pittmans Field | 17:45 | 12:00 | 919m |
| London Road P.o. | 17:30 | 12:30 | 1,654m |
| Tesco | 17:30 | 12:30 | 1,831m |
CM20 3EF ITL and CM20 3EF LAU
The below table lists the International Territorial Level (ITL) codes (formerly Nomenclature of Territorial Units for Statistics (NUTS) codes) and Local Administrative Units (LAU) codes for CM20 3EF:
| ITL 1 Code | Name |
|---|---|
| TLH | East |
| ITL 2 Code | Name |
| TLH3 | Essex |
| ITL 3 Code | Name |
| TLH35 | West Essex |
| LAU 1 Code | Name |
| E07000073 | Harlow |
CM20 3EF census areas
The below table lists the Census Output Area (OA), Lower Layer Super Output Area (LSOA), and Middle Layer Super Output Area (MSOA) for CM20 3EF:
| Code | Name | |
|---|---|---|
| OA | E00110973 | |
| LSOA | E01021847 | Harlow 002D |
| MSOA | E02004545 | Harlow 002 |
Nearest postcodes to CM20 3EF
| CM20 3EG | Harefield | 48m |
| CM20 3HU | Pennymead | 72m |
| CM20 3HX | Pennymead | 94m |
| CM20 3EE | Woodleys | 102m |
| CM20 3JF | Pennymead | 102m |
| CM20 3HN | Tunnmeade | 109m |
| CM20 3EB | Blackbush Spring | 121m |
| CM20 3HL | Tunnmeade | 137m |
| CM20 3HZ | Pennymead | 140m |
| CM20 3HS | Quarry Spring | 154m |
- Contains OS data © Crown copyright and database right (2026)
- Contains Royal Mail data © Royal Mail copyright and Database right (2026)
- Contains National Statistics data © Crown copyright and database right (2026)
- Data produced by Land Registry © Crown copyright (2026)
- Contains Environment Agency data licensed under the Open Government Licence v3.0
- Everything else © GetTheData Publishing Limited (2026)
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