About This Place
Harrison is a census-designated place (CDP) in Madison County, Montana, United States. The population was 162 at the 2000 census.
Harrison is located at 45°42′9″N 111°47′7″W / 45.7025°N 111.78528°W / 45.7025; -111.78528 (45.702507, -111.785376).
According to the United States Census Bureau, the CDP has a total area of 0.2 square miles (0.6 km²), all of it land.