
Hartwick township
- County:
- Osceola County
- County Seat:
- No
- Area (mi²):
- 35.014
- State:
- Michigan
Hartwick township is located in Osceola County, Michigan. Hartwick township has a 2025 population of 605. Hartwick township is currently growing at a rate of 0.33% annually and its population has increased by 2.37% since the most recent census, which recorded a population of 591 in 2020.
The average household income in Hartwick township is $66,011 with a poverty rate of 16.41%. The median age in Hartwick township is 39.9 years: 39.6 years for males, and 44.3 years for females.