Union township
- County:
- Vanderburgh County
- County Seat:
- No
- Area (mi²):
- 27.502
- State:
- Indiana
Union township is located in Vanderburgh County, Indiana. Union township has a 2026 population of 249. Union township is currently growing at a rate of 0.81% annually and its population has increased by 3.32% since the most recent census, which recorded a population of 241 in 2020.
The median age in Union township is 48.2 years: 48.2 years for males, and 44 years for females. For every 100 females there are 194.3 males.