 The municipality is located in the Oberaargau region.It consists of the village of Ursenbach with the old church, the upper and lower village sections and the hamlets of Hirseren, Richisberg, Lünisberg and Hofen as well as scattered farm houses throughout the hilly landscape.In 1888-89 Ursenbach gave up the settlement of Hubbergviertel (population 220) to Dürrenroth and Walterswil and in return got Richisberg (population 43) from Oeschenbach and Lünisberg (population 118) from Wynigen.