Template:Attached KML/CM postcode area
KML is from Wikidata
CM is located in the United Kingdom
Coordinates: 51°45′14″N 0°23′56″E / 51.754°N 0.399°E / 51.754; 0.399
CountryUnited Kingdom
Postcode area
Postcode area name
Post towns16
Postcode districts28
Postcode sectors103
Postcodes (live)17,864
Postcodes (total)27,233
Statistics as at May 2020[1]

The CM postcode area, also known as the Chelmsford postcode area,[2] is a group of 25 postcode districts in England, within 16 post towns. These cover central Essex (including Chelmsford, Harlow, Brentwood, Billericay, Braintree, Burnham-on-Crouch, Dunmow, Epping, Ingatestone, Maldon, Ongar, Southminster, Stansted and Witham), plus a small part of east Hertfordshire (including Bishop's Stortford and Sawbridgeworth) and a very small part of the London Borough of Havering.

The southern part of the CM7 district for Braintree was recoded to CM77 in 2002.[3]


The Stansted post town (CM24) is entirely surrounded by the Bishop's Stortford post town (CM22 and CM23).[2] The approximate coverage of the postcode districts:

Postcode district Post town Coverage Local authority area(s)
CM0 SOUTHMINSTER Southminster, Bradwell, Tillingham, Asheldham, Dengie Maldon
BURNHAM-ON-CROUCH Burnham-on-Crouch, Tillingham
CM1 CHELMSFORD Chelmsford, Writtle Chelmsford, Uttlesford
CM2 CHELMSFORD Chelmsford Chelmsford
CM3 CHELMSFORD Hatfield Peverel, South Woodham Ferrers, North Fambridge, Cold Norton, Boreham, Maylandsea Chelmsford, Maldon, Braintree, Uttlesford
CM4 INGATESTONE Blackmore, Fryerning, Ingatestone, Margaretting, Stock Brentwood, Chelmsford, Epping Forest
CM5 ONGAR Chipping Ongar, High Ongar, Bobbingworth, Moreton, The Lavers, The Rodings Epping Forest, Chelmsford
CM6 DUNMOW Great Dunmow, Felsted Uttlesford, Chelmsford
CM7 BRAINTREE Braintree, Finchingfield, Great Bardfield Braintree, Uttlesford
CM8 WITHAM Witham Braintree, Maldon
CM9 MALDON Maldon, Tollesbury, Tolleshunt D'Arcy, Tolleshunt Knights Maldon, Colchester, Chelmsford
CM11 BILLERICAY Billericay (East), Great Burstead Basildon, Chelmsford
CM12 BILLERICAY Billericay (West), Little Burstead Basildon, Brentwood
CM13 BRENTWOOD Brentwood, East Horndon, Great Warley, Herongate, Hutton, Ingrave, Little Warley, West Horndon Brentwood, Basildon, Havering
CM14 BRENTWOOD Brentwood, Warley Brentwood, Havering
CM15 BRENTWOOD Brentwood, Doddinghurst, Kelvedon Hatch, Mountnessing, Shenfield, Stondon Massey, Pilgrims Hatch Brentwood
CM16 EPPING Epping, Theydon Bois, North Weald Epping Forest
CM17 HARLOW Harlow, Old Harlow, Matching, Matching Tye, Matching Green, Church Langley Harlow, Epping Forest, Uttlesford
CM18 HARLOW Harlow Harlow, Epping Forest
CM19 HARLOW Harlow, Roydon Harlow, Epping Forest
CM20 HARLOW Harlow, Gilston Harlow, East Hertfordshire
CM21 SAWBRIDGEWORTH Sawbridgeworth East Hertfordshire, Epping Forest
CM22 BISHOP'S STORTFORD Bishop's Stortford, Sheering Uttlesford, East Hertfordshire, Epping Forest
CM23 BISHOP'S STORTFORD Bishop's Stortford, Thorley, Manuden East Hertfordshire, Uttlesford
CM24 STANSTED Stansted Mountfitchet, Stansted Airport Uttlesford
CM77 BRAINTREE Braintree, Great Notley, Rayne Braintree, Uttlesford, Chelmsford
CM92 CHELMSFORD Sandringham House non-geographic
CM98 CHELMSFORD Jobcentre Plus non-geographic
CM99 CHELMSFORD PO Box Users non-geographic


Template:Attached KML/CM postcode area
KML is from Wikidata
CM postcode area map, showing postcode districts, post towns and neighbouring postcode areas.CB postcode areaCO postcode areaDA postcode areaE postcode areaEN postcode areaIG postcode areaIP postcode areaME postcode areaRM postcode areaRM postcode areaSE postcode areaSG postcode areaSS postcode area
CM postcode area map, showing postcode districts in red and post towns in grey text, with links to nearby CB, CO, E, EN, IG, RM, SG and SS postcode areas.

See also


  1. ^ "ONS Postcode Directory Version Notes" (ZIP). National Statistics Postcode Products. Office for National Statistics. May 2020. Table 2. Retrieved 19 June 2020. Coordinates from mean of unit postcode points, "Code-Point Open". OS OpenData. Ordnance Survey. February 2012. Retrieved 21 April 2012.
  2. ^ a b Royal Mail, Address Management Guide, (2004)
  3. ^ "Royal Mail Update 34". Beacon Dodsworth. Retrieved 23 August 2015.