The CO1 1YY postcode was located in Colchester, Essex postcode town, within East of England, England region.
It is now a terminated postcode, it was a Large User postcode introduced in 1980-01 and terminated on 1994-05.
| Name | Type |
|---|---|
| OA21CD | E00109975 |
| LSOA21CD | E01021650 |
| MSOA21CD | E02004512 |
| MSOA21 | Central Colchester |
| Postcode Area | CO1 |
| Ward | Castle |
| LTLA22 | Colchester |
| UTLA22 | Essex |
| Region | East of England |
| Country | England |
| Co-ordinates | [ 0.8965384263199271, 51.8941667020881 ] |