In the middle of the13th century, the endowment of the Bishopric of Plock consisted 160 settlements and approximately 90 villages located in the vicinity of Plock, Plonsk, Sierpc and Wyszogrod. By the end of the 14th century, around 280 settlements belonged to the Church of Plock. The foundation of new settlements in the 14th century (e.g. Brzozie, Gorzno, Grazawa, Gleboczek) under German law in the estates of Bishops of Plock, as well as the relocation of already existing ones, contributed to economic progress, not only by expanding the cultivated land area but also by making more efficient use of already developed territories.
