
Harrison
- County:
- Madison County
- County Seat:
- No
- Area (mi²):
- 0.175
- State:
- Montana
Harrison is a CDP located in Madison County, Montana. Harrison has a 2025 population of 18. Harrison is currently declining at a rate of -30.77% annually and its population has decreased by -71.88% since the most recent census, which recorded a population of 64 in 2020.
The average household income in Harrison is $59,879 with a poverty rate of 26.04%. The median age in Harrison is 54.1 years: 57.7 years for males, and 50.3 years for females.