About CO Postcodes

The CO postcode area contains 16 postcode districts and covers Colchester, Clacton-on-Sea, Sudbury, Manningtree and other areas. The total population across all districts is approximately 411,411.

Postcode Districts 16

CO1
Colchester
611 postcodes 15,333 pop.
CO10
Sudbury
1,644 postcodes 46,604 pop.
CO11
Manningtree
557 postcodes 12,978 pop.
CO12
Harwich
629 postcodes 22,251 pop.
CO13
Frinton-on-Sea
434 postcodes 12,280 pop.
CO14
Walton On The Naze
244 postcodes 6,660 pop.
CO15
Clacton-on-Sea
1,358 postcodes 43,475 pop.
CO16
Clacton-on-Sea
797 postcodes 23,608 pop.
CO2
Colchester
944 postcodes 34,768 pop.
CO3
Colchester
860 postcodes 28,502 pop.
CO4
Colchester
1,167 postcodes 47,821 pop.
CO5
Colchester
955 postcodes 28,207 pop.
CO6
Colchester
1,012 postcodes 28,541 pop.
CO7
Wivenhoe, Great Bentley
1,298 postcodes 32,912 pop.
CO8
Bures
124 postcodes 2,282 pop.
CO9
Halstead
920 postcodes 25,189 pop.

Post Towns in CO Area

Colchester 7 districts
Clacton-on-Sea 2 districts
Sudbury 1 district
Manningtree 1 district
Harwich 1 district
Frinton-on-Sea 1 district
Walton-on-the-Naze 1 district
Bures 1 district
Halstead 1 district