Map
General Information
| Postal Area | Chelmsford |
| Postcode | CM1 1YG |
| 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 | 2011-05-01 |
Geographic Information
| Latitude | 51.7346160 |
| Longitude | 0.4746180 |
| Easting | 570976 |
| Northing | 206887 |
| Quality | Within the building of the matched address closest to the postcode mean |