Map
General Information
| Postal Area | East Hertfordshire |
| Postcode | SG1 4QN |
| User Type | Large (more than 25 items of mail per day) |
| Region | East of England |
| Country | England |
| Local authority | Stevenage |
| Introduction Date | 1981-06-01 |
| Termination Date | 2016-12-01 |
Geographic Information
| Latitude | 51.9225370 |
| Longitude | -0.1708090 |
| Easting | 525887 |
| Northing | 226471 |
| Quality | Within the building of the matched address closest to the postcode mean |