Dayton is an unincorporated community in the western part of township at 41??47???54???N 86??26???22???W??? / ???41.79833??N 86.43944??W??? / 41.79833; -86.43944??? (Dayton).[4] It is on Dayton Lake off U.S. Highway 12 about midway between Niles and Three Oaks, just a few miles north of the Indiana state border.