CM20 spans the counties of Essex and Hertfordshire. It contains the town of Harlow, as well as Temple Fields, Little Parndon, Netteswell, Mark Hall South, and Mark Hall North. CM20 is 26km west of the city of Chelmsford. CM20 is a postcode district, also known as an outcode or outbound code.
CM20 and coronavirus (COVID-19): Public Health England report confirmed coronavirus cases by Upper Tier Local Authority, based on the postcode of the patient. 94% of CM20 postcodes are in the Essex Upper Tier Local Authority and 6% of CM20 postcodes are in the Hertfordshire Upper Tier Local Authority. Track confirmed COVID-19 cases in Essex and Hertfordshire. Coronavirus maps for Essex and Hertfordshire.
The below map shows where CM20 is, and the boundary of the CM20 postcode district:
Postal Boundaries © GEOLYTIX copyright and database right 2012
CM20 lies within the counties of Essex and Hertfordshire. The below table and chart shows the split by area:
This data was derived from the below datasets:
Source: GEOLYTIX Postal Geometries
Licence: GeoLytix OpenData Licence Terms and Conditions
Source: Ordnance Survey Ceremonial Counties
Licence: Open Government Licence
|Mark Hall South||Suburb|
|Mark Hall North||Suburb|
Position of CM20 relative to nearby towns. Distance is measured from the centre of CM20 to the centre of the town.
Position of CM20 relative to nearby cities. Distance is measured from the centre of CM20 to the centre of the city.