Union township
- County:
- Highland County
- County Seat:
- No
- Area (mi²):
- 29.652
- State:
- Ohio
Union township is located in Highland County, Ohio. Union township has a 2026 population of 1,957. Union township is currently growing at a rate of 0.41% annually and its population has increased by 0.72% since the most recent census, which recorded a population of 1,943 in 2020.
The median household income in Union township is $67,481 with a poverty rate of 1.49%. The median age in Union township is 43.6 years: 33.2 years for males, and 50.1 years for females. For every 100 females there are 126.4 males.