Matt has an area, as defined by the former municipal boundaries in 2006, of , covering a considerable area on each side of the river. Tho the east, this area reaches up to the peaks of the Gulderstock (), Spitzmeilen (), Wissgandstöckli () and Foostock (), and includes the valley of the Krauch stream. To the west, the land rises up to the Bergligrat (). Of the total area, 39.6% is used for agricultural purposes, while 32.4% is forested. Of the rest of the land, 0.8% is settled (buildings or roads) and the remainder (27.2%) is non-productive (rivers, glaciers or mountains).