This section of the site is all about the CM Postcode area, also known as the Chelmsford Postal Area. Explore links to the next level to learn more about specific postcode districts such as CM0.

Detailed map of the CM Postcode Area — Detailed map showing districts and posttowns in the CM Chemsford Area

The CM postcode area represents a group of postal districts in the Chelmsford area of the United Kingdom. The area code CM stands for the letters c and m in ChelMsford. CM has a population of 653,492 and covers an area of 1,791,944 hectares. Fun fact: 1.01% of the population of Great Britain lives in this area.

The postcode area falls within the following counties: Essex (92.41%), Hertfordshire (7.57%), Greater London (0.01%).

Post Towns and Postcode Districts for the CM Postcode

BURNHAM-ON-CROUCH

SOUTHMINSTER

CHELMSFORD

INGATESTONE

ONGAR

DUNMOW

BRAINTREE

WITHAM

MALDON

BILLERICAY

BRENTWOOD

EPPING

HARLOW

CM20 Essex (95%), Hertfordshire (4%)

SAWBRIDGEWORTH

CM21 Essex (25%), Hertfordshire (75%)

BISHOP'S STORTFORD

CM22 Essex (86%), Hertfordshire (13%)

CM23 Essex (8%), Hertfordshire (91%)

STANSTED

CM24 Essex

Where is the CM Postcode Area?

The CM Chelmsford Postcode is in the East of England. The postal area borders the following neighbouring postal areas: SS - Southend-on-Sea, CO - Colchester, CB - Cambridge, SG - Stevenage, RM - Romford, EN - Enfield and IG - Ilford, It also borders The Blackwater and The Thames Estuary.

Map of the CM Chelmsford Postcode Area

Explore the CM Chelmsford postcode area by using our interactive map.

Map Showing Location of the CM postcode area — Where is the CM Postcode Area

A word cloud for the CM postcode area — A word cloud for the CM Postcode Area

Postcode Districts within the CM Chelmsford Postcode Area

There are 25 postcode districts within the Chelmsford postcode area

A map showing the boundary of in relation to other areas

There are 19 towns within the Chelmsford postcode area.

Area of the CM postcode area
Unit	Area²
Hectares	1,791,944²
Miles	6,919²
Feet	192,883,060,216²
Kilometres	17,919²

Postal Delivery Offices serving the CM Chelmsford Postcode Area

Althorne Scale Payment Delivery Office
Billericay Delivery Office
Bishops Stortford Delivery Office
Blackmore Scale Payment Delivery Office
Boreham Scale Payment Delivery Office
Braintree Delivery Office
Brentwood Delivery Office
Burnham On Crouch Scale Payment Delivery Office
Chelmsford Delivery Office
Danbury Scale Payment Delivery Office
Dunmow Delivery Office
Elsenham Scale Payment Delivery Office
Epping Delivery Office
Finchingfield Scale Payment Delivery Office
Harlow Delivery Office
Hatfield Peverel Scale Payment Delivery Office
Ingatestone Scale Payment Delivery Office
Latching Delivery Office N Scale Payment Delivery Office
Maldon Delivery Office
Ongar Delivery Office
Purleigh Scale Payment Delivery Office
Sawbridgeworth Delivery Office
Silver End Scale Payment Delivery Office
South Woodham Ferrers Delivery Office
Southminster Scale Payment Delivery Office
Stansted Scale Payment Delivery Office
Takeley Scale Payment Delivery Office
Tollesbury Scale Payment Delivery Office
Wethersfield Scale Payment Delivery Office
Wickham Bishops Scale Payment Delivery Office
Witham Delivery Office

Postcode Areas Closest to CM

Councils with Postcodes in CM

Chelmsford District (B) (4179 postcodes)

Braintree District (2732 postcodes)

Brentwood District (B) (2144 postcodes)

Maldon District (B) (1861 postcodes)

Uttlesford District (1821 postcodes)

Harlow District (1784 postcodes)

Epping Forest District (1328 postcodes)

East Hertfordshire District (1260 postcodes)

Basildon District (B) (909 postcodes)

Colchester District (B) (9 postcodes)

Thurrock (B) (7 postcodes)

Havering London Boro (2 postcodes)

CM Postcode Area for the Chelmsford Region