Map
General Information
| Postal Area | Chelmsford |
| Postcode | CM1 1AY |
| User Type | Large (more than 25 items of mail per day) |
| Region | East of England |
| Country | England |
| Local authority | Chelmsford |
| Introduction Date | 2000-12-01 |
| Termination Date | 2001-04-01 |
Geographic Information
| Latitude | 51.7354690 |
| Longitude | 0.4738240 |
| Easting | 570918 |
| Northing | 206980 |
| Quality | Imputed by ONS, by reference to surrounding postcode grid references |