Postoloprty (Czech pronunciation: [ˈpostolopr̩tɪ]; German: Postelberg) is a town in Louny District in the Ústí nad Labem Region of the Czech Republic. It has about 4,700 inhabitants. It is located in the Most Basin, at the confluence of the Ohře and Chomutovka rivers. It lies in an agricultural area known for growing Saaz hops. Postoloprty existed already in the 12th century. During the rule of the Veitmile family in the 16th century, it became a town. Other notable noble owners of the town were the Schwarzenberg family, who owned it from 1692.