Map
General Information
| Postal Area | Chelmsford |
| Postcode | CM1 1UY |
| User Type | Large (more than 25 items of mail per day) |
| Region | East of England |
| Country | England |
| Local authority | Chelmsford |
| Introduction Date | 1981-06-01 |
| Termination Date | 1996-12-01 |
Geographic Information
| Latitude | 51.7348170 |
| Longitude | 0.4706310 |
| Easting | 570700 |
| Northing | 206900 |
| Quality | Postcode terminated prior to Gridlink® initiative, last known ONS postcode grid reference |