Plainville

County:: Norfolk County
County Seat:: No
Area (mi²):: 10.988
State:: Massachusetts

Plainville is located in Norfolk County, Massachusetts. Plainville has a 2025 population of 9,891. Plainville is currently growing at a rate of 0.05% annually but its population has decreased by -0.39% since the most recent census, which recorded a population of 9,930 in 2020.

The average household income in Plainville is $120,495 with a poverty rate of 8.21%.The median age in Plainville is 43.6 years: 39 years for males, and 47.6 years for females.

Demographics

The racial composition of Plainville includes 81.03% White, 6.43% Black or African American, 4.86% other race, and smaller percentages for Asian and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
White	7,999	81.03%
Black or African American	635	6.43%
Two or more races	492	4.98%
Other race	480	4.86%
Asian	266	2.69%

Plainville Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Plainville's average per capita income is $61,230. Household income levels show a median of $95,625. The poverty rate stands at 8.21%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.

Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.

Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.

Name	Median	Mean
Married Families	$116,964	-
Families	$110,101	$140,047
Households	$95,625	$120,495
Non Families	$44,861	$66,698

$61,230

Average Income

$95,625

Median Household Income

8.21%

Poverty Rate