Union township
- County:
- Benton County
- County Seat:
- No
- Area (mi²):
- 35.762
- State:
- Indiana
Union township is located in Benton County, Indiana. Union township has a 2026 population of 236. Union township is currently declining at a rate of 0% annually and its population has increased by 0.85% since the most recent census, which recorded a population of 234 in 2020.
The median age in Union township is 43.7 years: 43.7 years for males, and 43.8 years for females. For every 100 females there are 92.7 males.