Biberstein lies between the Aare and the Homberg, which is part of the southernmost chain of the Folded Jura. The populated area extends over a length of two and a half kilometers along the Aare, with the village center located on an elevated terrace. To the west lies the district of Wissen, to the east the district of Cholgrueben. The only flat area is the "Schachen", a narrow former floodplain on the left bank of the Aare, which is used for agriculture. The slope of the Homberg is mostly forested. The forest is broken up by several pastures at an altitude of around 650 meters.
The municipal area is 410 hectares; of this, 213 hectares are covered with forest and 55 hectares are built over. The lowest point is at 360 meters above sea level on the banks of the Aare, the highest at 768 meters on the Homberg ridge. Neighboring communities are Thalheim in the north, Auenstein in the east, Aarau in the south and Küttigen in the west. The municipality of Biberstein is part of the Jura Park Aargau, a so-called "regional nature park of national importance".
Source: Wikipedia