Map
General Information
| Postal Area | East Hertfordshire |
| Postcode | SG1 4NN |
| User Type | Small (less than 25 items of mail per day) |
| Region | East of England |
| Country | England |
| Local authority | Stevenage |
| Introduction Date | 1980-01-01 |
Geographic Information
| Latitude | 51.9226440 |
| Longitude | -0.1730440 |
| Easting | 525733 |
| Northing | 226479 |
| Quality | Within the building of the matched address closest to the postcode mean |