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CM postcode area

Chelmsford postcode area
CM is located in the United Kingdom
Postcode area CM
Postcode area name Chelmsford
Post towns 16
Postcode districts 28
Postcode sectors 103
Postcodes (live) 17,765
Postcodes (total) 25,740
Statistics as at February 2012[1]

The CM postcode area, also known as the Chelmsford postcode area,[2] is a group of 25 postcode districts in England, which are subdivisions of 16 post towns. These postcode districts 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]


  • Coverage 1
  • Map 2
  • See also 3
  • References 4


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
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, Stock Brentwood, Chelmsford, Epping Forest
CM5 ONGAR Chipping Ongar, High Ongar, Bobbingworth, Moreton, The Lavers, The Rodings Epping Forest
CM6 DUNMOW Great Dunmow, Felsted Uttlesford, Chelmsford
CM7 DUNMOW non-geographic[4][5]
CM7 BRAINTREE Braintree, Finchingfield, Great Bardfield Braintree, Uttlesford
CM8 WITHAM Witham Braintree, Maldon
CM9 MALDON Maldon, Tollesbury, Tolleshunt D'Arcy, Tolleshunt Knights Maldon
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 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
CM92 CHELMSFORD Shop Direct non-geographic[4]
CM98 CHELMSFORD Department for Work and Pensions non-geographic[4]
CM99 CHELMSFORD Selectapost, International Financial Data Services Group non-geographic[4]


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.  
  2. ^ a b Royal Mail, Address Management Guide, (2004)
  3. ^ "Royal Mail Update 34". Beacon Dodsworth. Retrieved 23 August 2015. 
  4. ^ a b c d "Non Geographic Codes" (PDF). Royal Mail Address Management Unit. July 2012. Retrieved 20 December 2012. 
  5. ^ "New sectors and localities to 14 December 2012" (PDF). Royal Mail Address Management Unit. 20 December 2012. Retrieved 20 December 2012. 
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