Map
General Information
| Postal Area | Harrow |
| Postcode | HA1 1JA |
| User Type | Large (more than 25 items of mail per day) |
| Region | London |
| Country | England |
| Local authority | Harrow |
| Introduction Date | 1986-07-01 |
| Termination Date | 1994-05-01 |
Geographic Information
| Latitude | 51.5898440 |
| Longitude | -0.3355950 |
| Easting | 515400 |
| Northing | 189200 |
| Quality | Postcode terminated prior to Gridlink® initiative, last known ONS postcode grid reference |