Hierarchy
Child units
Białystok
Urban County
Białystok County
County
Suwałki
Urban County
Sokółka County
County
Łomża
Urban County
Augustów County
County
Wysokie Mazowieckie County
County
Bielsk County
County
Łomża County
County
Grajewo County
County
Zambrów County
County
Siemiatycze County
County
Hajnówka County
County
Mońki County
County
Kolno County
County
Suwałki County
County
Sejny County
County
Also written Województwo podlaskie.