Map
General Information
| Postal Area | Blackburn with Darwen |
| Postcode | BB1 4AF |
| User Type | Small (less than 25 items of mail per day) |
| Region | North West |
| Country | England |
| Local authority | Ribble Valley |
| Introduction Date | 1980-01-01 |
Geographic Information
| Latitude | 53.7858340 |
| Longitude | -2.4654380 |
| Easting | 369431 |
| Northing | 432267 |
| Quality | Within the building of the matched address closest to the postcode mean |