CO postcode area
Postcode district boundaries:
The CO postcode area, also known as the Colchester postcode area, is a group of sixteen postcode districts in the east of England, within nine post towns. These cover northeast Essex (including Colchester, Bures, Clacton-on-Sea, Frinton-on-Sea, Halstead, Harwich, Manningtree and Walton-on-the-Naze) and a small part of south Suffolk (including Sudbury). The main sorting office is in Colchester.
|Postcode area name|
|Statistics as at May 2020|
The approximate coverage of the postcode districts:
|Postcode district||Post town||Coverage||Local authority area(s)|
|CO2||COLCHESTER||Old Heath, Berechurch, Layer de la Haye||Colchester|
|CO4||COLCHESTER||Greenstead, Highwoods, St Johns, Myland, Boxted, Braiswick||Colchester|
|CO5||COLCHESTER||Tiptree, Kelvedon, West Mersea, Peldon, Rowhedge||Colchester, Braintree, Maldon|
|CO6||COLCHESTER||Coggeshall, Earls Colne, Marks Tey, Great Tey, Chappel, Wakes Colne, Copford, West Bergholt, Great Horkesley, Wormingford, Nayland, Stoke-by-Nayland, Polstead||Colchester, Braintree, Babergh|
|CO7||COLCHESTER||Brightlingsea, Wivenhoe, Great Bentley, Alresford||Colchester, Tendring|
|CO8||BURES||Bures, Alphamstone||Colchester, Braintree, Babergh|
|CO11||MANNINGTREE||Manningtree, Lawford, Mistley, Bradfield, Wrabness, Wix, Horsley Cross, Little Bromley, Brantham, Cattawade||Tendring, Babergh|
|CO12||HARWICH||Harwich, Dovercourt, Parkeston, Ramsey, Little Oakley, Great Oakley, Stones Green||Tendring|
|CO14||WALTON ON THE NAZE||Walton-on-the-Naze||Tendring|
|CO16||CLACTON-ON-SEA||Clacton-on-Sea, St Osyth, Little Clacton||Tendring|
- "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.
- Royal Mail, Address Management Guide, (2004)
- The post town is unhyphenated.