The CM1 1YB postcode was located in Chelmsford, Essex postcode town, within East of England, England region.
It is now a terminated postcode, it was a Large User postcode introduced in 1997-06 and terminated on 1998-12.
| Name | Type |
|---|---|
| OA21CD | E00109596 |
| LSOA21CD | E01034091 |
| MSOA21CD | E02006979 |
| MSOA21 | Central Chelmsford West |
| Postcode Area | CM1 |
| Ward | Marconi |
| LTLA22 | Chelmsford |
| UTLA22 | Essex |
| Region | East of England |
| Country | England |
| Co-ordinates | [ 0.46974899960154864, 51.73935888401036 ] |