
Plainfield
- County:
- Washington County
- County Seat:
- No
- Area (mi²):
- 0.473
- State:
- Vermont
Plainfield is a CDP located in Washington County, Vermont. Plainfield has a 2025 population of 437. Plainfield is currently growing at a rate of 0.46% annually and its population has increased by 5.3% since the most recent census, which recorded a population of 415 in 2020.
The average household income in Plainfield is $64,964 with a poverty rate of 19.35%. The median age in Plainfield is 41.8 years: 38.4 years for males, and 41.9 years for females.