Map
General Information
| Postal Area | East Hertfordshire |
| Postcode | SG1 1DD |
| 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 | 51.9012400 |
| Longitude | -0.2008620 |
| Easting | 523879 |
| Northing | 224051 |
| Quality | Within the building of the matched address closest to the postcode mean |