
Harrison township
- County:
- Mercer County
- County Seat:
- No
- Area (mi²):
- 43.547
- State:
- Missouri
Harrison township is located in Mercer County, Missouri. Harrison township has a 2025 population of 211. Harrison township is currently declining at a rate of 0% annually and its population has decreased by -1.4% since the most recent census, which recorded a population of 214 in 2020.
The average household income in Harrison township is $75,520 with a poverty rate of 10.08%. The median age in Harrison township is 69.5 years: 69.4 years for males, and 69.6 years for females.