
Plain township
- County:
- Franklin County
- County Seat:
- No
- Area (mi²):
- 19.951
- State:
- Ohio
Plain township is located in Franklin County, Ohio. Plain township has a 2025 population of 13,020. Plain township is currently growing at a rate of 0.35% annually and its population has increased by 2.09% since the most recent census, which recorded a population of 12,754 in 2020.
The average household income in Plain township is $318,922 with a poverty rate of 2.58%. The median age in Plain township is 41 years: 40.7 years for males, and 41.6 years for females.