Plainfield

County:: Sullivan County
County Seat:: No
Area (mi²):: 0.578
State:: New Hampshire

Plainfield is a CDP located in Sullivan County, New Hampshire. Plainfield has a 2025 population of 173. Plainfield is currently declining at a rate of -1.14% annually and its population has decreased by -34.72% since the most recent census, which recorded a population of 265 in 2020.

The average household income in Plainfield is $132,558 with a poverty rate of 0%.The median age in Plainfield is 51.6 years: 60.3 years for males, and 31.9 years for females.

Demographics

The racial composition of Plainfield includes 94.51% White, 4.22% Black or African American, and smaller percentages for Two or more races and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
White	224	94.51%
Black or African American	10	4.22%
Two or more races	3	1.27%

Plainfield Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Plainfield's average per capita income is $74,688. Household income levels show a median of $105,750. The poverty rate stands at 0%.

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
Non Families	$192,875	$154,076
Households	$105,750	$132,558
Married Families	$104,615	-
Families	$104,231	$115,777

$74,688

Average Income

$105,750

Median Household Income

0%

Poverty Rate