Bielsk County is a unit of territorial administration and local government in Podlaskie Voivodeship, north-eastern Poland. It came into being on …Bielsk County is a unit of territorial administration and local government in Podlaskie Voivodeship, north-eastern Poland. It came into being on 1 January 1999, as a result of the Polish local government reforms passed in 1998. Its administrative seat and largest town is Bielsk Podlaski, which lies 39 kilometres south of the regional capital Białystok. The only other town in the county is Brańsk, lying 25 km west of Bielsk Podlaski.