
Union township
- County:
- Hardin County
- County Seat:
- No
- Area (mi²):
- 35.672
- State:
- Iowa
Union township is located in Hardin County, Iowa. Union township has a 2025 population of 680. Union township is currently declining at a rate of 0% annually and its population has decreased by 0% since the most recent census, which recorded a population of 0 in 2020.
The average household income in Union township is $76,816 with a poverty rate of 5.15%. The median age in Union township is 45.6 years: 47 years for males, and 37.9 years for females.