Community & Data
Demographics
A Portrait of Plainfield
Plainfield spreads 633 people across about 21 square miles of hill country, which means the town has far more land than people to the square mile, and the census numbers describe a town of homeowners: 93.5 percent of its housing units are owner-occupied, households average 2.4 people, and the median household income is $78,750. About three residents in ten are 65 or over, and nearly one in five is under 18. Figures below are from the U.S. Census Bureau and the Secretary of the Commonwealth. Follow the source links for the latest.
Key Figures
Sources: US Census Bureau (data.census.gov).
Population & Households
- Population (2020 Census): 633
- Households: 261
- Persons per household: 2.4
- Foreign-born: 3.5% of residents
- Age 65 and over: 30.2%
- Under 18: 18.5%
Race & Ethnicity
- White: 88.0%
- Asian: 0.2%
- Black or African American: 0.2%
- Hispanic or Latino (any race): 1.9%
- Two or more races: 10.0%
- Speak a language other than English at home: 7.6%
Economy & Housing
- Median household income: $78,750
- Poverty rate: 14.4%
- Median home value: $278,900
- Median gross rent: $1,063
- Homeownership: 93.5% of units
- In the labor force: 62.3%
Registered Voters
Massachusetts publishes voter-registration counts by town through the Secretary of the Commonwealth; the counts below are the state’s enrollment snapshot from February 1, 2025. As in most of the state, Plainfield’s largest bloc by far is voters who choose no party at all.
- Total registered: 545
- Unenrolled (no party): 380 (69.72%)
- Democrats: 120 (22.02%)
- Republicans: 40 (7.34%)
Sources
See how Plainfield fits into the broader Commonwealth.