BB3 postcode district
BB3 holds 931 live postcodes around Darwen, in Blackburn with Darwen.
Towns and villages with their centre in BB3
| # | Place | County / council | Population |
|---|---|---|---|
| 1 | Darwen | Blackburn with Darwen | 32,566 |
Wards
| Name | Share of postcodes |
|---|---|
| Darwen West | 27% |
| Darwen East | 26% |
| Darwen South | 24% |
| West Pennine | 14% |
| Blackburn South & Lower Darwen | 8% |
| Livesey with Pleasington | 0% |
| Ewood | 0% |
| Blackburn South East | 0% |
Westminster constituencies
| Name | Share of postcodes |
|---|---|
| Rossendale and Darwen | 99% |
| Blackburn | 1% |
Deprivation
The middle postcode here sits in decile 3 of the English Index of Multiple Deprivation (2021-Census LSOAs), where decile 1 is the most deprived tenth of neighbourhoods and 10 the least. 54% of this district's postcodes sit in the most deprived three deciles, 12% in the least deprived three.
Deprivation deciles describe the LSOA neighbourhood each postcode sits in, weighted by postcodes rather than by people, because the postcode file carries no population. A district where the deprived neighbourhoods are densely populated will read better here than it would per resident.
Neighbouring districts in the BB area
BB1 · BB2 · BB4 · BB5 · BB6 · BB7 · BB8 · BB9 · BB10 · BB11 · BB12 · BB18
Contains OS data © Crown copyright and database right 2026. Contains Royal Mail data © Royal Mail copyright and database right 2026. Source: Office for National Statistics licensed under the Open Government Licence v3.0. Postcode data is the ONS Postcode Directory, August 2026 edition; counts are live postcodes with a usable location. Northern Ireland postcodes carry a separate licence and are not included; Scotland joins when the site's Scottish coverage does.