Union township
- County:
- Rush County
- County Seat:
- No
- Area (mi²):
- 35.496
- State:
- Indiana
Union township is located in Rush County, Indiana. Union township has a 2026 population of 722. Union township is currently declining at a rate of -0.82% annually and its population has decreased by -0.41% since the most recent census, which recorded a population of 725 in 2020.
The median household income in Union township is $78,214 with a poverty rate of 6.2%. The median age in Union township is 42.6 years: 38.6 years for males, and 50.3 years for females. For every 100 females there are 101.8 males.