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, Native American, Asian, Native Hawaiian or Pacific Islander, other race and multiracial populations.

Population by Race

White

Black or African American

Two or more races

Native American

Asian

Native Hawaiian or Pacific Islander

Other race

Race	Population	Percentage (of total)
White	224	94.51%
Black or African American	10	4.22%
Two or more races	3	1.27%
Native American	0	0%
Asian	0	0%
Native Hawaiian or Pacific Islander	0	0%
Other race	0	0%

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