
Union City
- County:
- Darke County
- County Seat:
- No
- Area (mi²):
- 0.918
- State:
- Ohio
Union City is a village located in Darke County, Ohio. Union City has a 2025 population of 1,554. Union City is currently declining at a rate of -0.32% annually and its population has decreased by -1.58% since the most recent census, which recorded a population of 1,579 in 2020.
The average household income in Union City is $44,437 with a poverty rate of 39.92%. The median age in Union City is 46.6 years: 46.1 years for males, and 47.3 years for females.