According to the United States Census Bureau, the town has a total area of , of which is land and is water. Set on either side of a narrow, uneven intervale in the Western Maine Mountains, Byron is drained by the Swift River.
According to the United States C?ensus Bu?reau, the town h,as a total area of , of which is land and is water. Set ?on either side of, a narrow, uneven intervale in the Western Maine Mountains, Byron is drained by the Swift River.