 Until the first partition of Poland in 1772 Sandomierz County had the area of 6290 sq.kilometers.Stretched along both banks of the Vistula, in 1667 it included such towns, as Opatow, Polaniec, Staszow, Wachock, Rudnik nad Sanem, Zawichost, Nowa Slupia, Mielec and Ozarow.