Map
General Information
| Postal Area | Blackburn with Darwen |
| Postcode | BB1 3AA |
| User Type | Small (less than 25 items of mail per day) |
| Region | North West |
| Country | England |
| Local authority | Blackburn with Darwen |
| Introduction Date | 1980-01-01 |
| Termination Date | 1991-12-01 |
| IMD 2025 | Decile 1 (most deprived = 1, least = 10) Rank 2,095 of 33,755 English Indices of Deprivation 2025 |
Geographic Information
| Latitude | 53.7483720 |
| Longitude | -2.4639790 |
| Easting | 369500 |
| Northing | 428100 |
| Quality | Postcode terminated prior to Gridlink® initiative, last known ONS postcode grid reference |