CM Postcode Area for the Chelmsford Region

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A wide range of spatial data has been analysed to present this overview. If you would like anything added, please contact us.

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
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Map of the CM Chelmsford Postcode Area

Explore the postcode area by using our interactive map.

Quick Facts about the CM Postcode

CM Area Statistics
Width from East to West 40.68 mi
Height from North to South 32.31 mi
Area of CM 698.31 mi²
Maximum Width 41.72 mi
Perimeter of Postcode Area 219.41 mi
Number of Postcode Districts 28
Number of Postcode Sectors 98
Number of Post Towns 16
Number of Postcodes 18,036
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The CM postcode area represents a group of 25 postal districts in the Chelmsford area of the United Kingdom. The area code stands for the letters c and m in ChelMsford. The area 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

BURNHAM-ON-CROUCH
CM0 Essex
SOUTHMINSTER
CM0 Essex
CHELMSFORD
CM1 EssexCM2 EssexCM3 EssexCM92 CM98 CM99
INGATESTONE
CM4 Essex
ONGAR
CM5 Essex
DUNMOW
CM6 Essex
BRAINTREE
CM7 EssexCM77 Essex
WITHAM
CM8 Essex
MALDON
CM9 Essex
BILLERICAY
CM11 EssexCM12 Essex
BRENTWOOD
CM13 EssexCM14 EssexCM15 Essex
EPPING
CM16 Essex
HARLOW
CM17 EssexCM18 EssexCM19 EssexCM20 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 Showing Location of the postcode area
Where is the postcode area?
A word cloud for the postcode area
A word cloud for the area

How built up is the Postcode Area?

I've calculated the total area covered by building footprints within the postcode area.
By analyzing this against the total area, I've determined the percentage of the area that's developed, this will give you an idea of how urban or rural the postcode region is.
The higher the percentage the more urban the area is. For example the least urban district is CM5 and the most urban is CM18.

Building Area Summary
Postcode District Total Area (m²) Footprint Area (m²) Built Percentage %
CM5 100,294,180 901,978 0.90%
CM0 125,300,839 1,272,730 1.02%
CM6 192,329,200 2,027,045 1.05%
CM22 99,255,763 1,175,138 1.18%
CM4 65,931,943 854,956 1.30%
CM3 260,364,372 3,867,025 1.49%
CM9 142,692,185 2,303,291 1.61%
CM77 58,200,629 1,046,702 1.80%
CM16 64,394,063 1,269,638 1.97%
CM7 124,322,119 2,512,308 2.02%
CM21 24,375,321 561,825 2.30%
CM17 38,287,122 1,018,812 2.66%
CM13 53,331,663 1,512,169 2.84%
CM8 58,532,456 1,730,664 2.96%
CM14 29,477,197 962,170 3.26%
CM24 20,174,927 668,871 3.32%
CM1 97,169,990 3,262,448 3.36%
CM11 31,332,075 1,071,074 3.42%
CM15 37,995,420 1,351,272 3.56%
CM23 51,715,179 2,043,351 3.95%
CM12 22,285,947 1,110,763 4.98%
CM2 51,514,990 2,841,129 5.52%
CM19 17,584,894 1,032,278 5.87%
CM20 16,677,982 1,354,986 8.12%
CM18 7,980,612 725,978 9.10%
Total 1,791,521,068 (m²) 38,478,601 (m²) 2.15%
Map of the CM Postcode Area

A map showing the boundary of CM in relation to other areas

There are 19 towns within the Chelmsford postcode area.

Map of Posttowns in the CM
Map of Posttowns in the CM Postal 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 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

Tourist Attractions within the Area

Nearby Postcodes

SS
CO
CB
SG
RM
EN
IG

Councils within the CM Area

Councils within the CM area
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)

Towns and Villages within the Area

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