User:Richardguk/CO postcode area

The CO postcode area, also known as the Colchester postcode area, is a group of postal districts around Bures, Clacton-on-Sea, Colchester, Frinton-on-Sea, Halstead, Harwich, Manningtree, Sudbury and Walton-on-the-Naze in England.

The main sorting office is in Colchester. Though the area is based in Essex, it also covers a small part of south Suffolk.

Coverage
The approximate coverage of the postal districts:

Adjacent areas
Clockwise from the east, the adjacent postcode areas are:, CM (Chelmsford), CB (Cambridge), IP (Ipswich).