Map
General Information
| Postal Area | East Hertfordshire |
| Postcode | SG1 1AD |
| User Type | Large (more than 25 items of mail per day) |
| Region | East of England |
| Country | England |
| Local authority | Stevenage |
| Introduction Date | 1988-03-01 |
| Termination Date | 1997-08-01 |
Geographic Information
| Latitude | 51.9008210 |
| Longitude | -0.2034810 |
| Easting | 523700 |
| Northing | 224000 |
| Quality | Postcode terminated prior to Gridlink® initiative, last known ONS postcode grid reference |