The CO1 1SX 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 1982-03 and terminated on 1995-01.
| 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 | [ 0.8979897520798475, 51.89413094654382 ] |