
Plainfield
- County:
- Coshocton County
- County Seat:
- No
- Area (mi²):
- 0.392
- State:
- Ohio
Plainfield is a village located in Coshocton County, Ohio. Plainfield has a 2025 population of 146. Plainfield is currently growing at a rate of 1.39% annually and its population has increased by 8.15% since the most recent census, which recorded a population of 135 in 2020.
The average household income in Plainfield is $58,743 with a poverty rate of 2.5%. The median age in Plainfield is 65.2 years: 65.4 years for males, and 65.1 years for females.