Plainville

County:: Adams County
County Seat:: No
Area (mi²):: 0.235
State:: Illinois

Plainville is a village located in Adams County, Illinois. Plainville has a 2025 population of 261. Plainville is currently declining at a rate of -0.76% annually and its population has decreased by -3.69% since the most recent census, which recorded a population of 271 in 2020.

The average household income in Plainville is $90,100 with a poverty rate of 10.85%. The median age in Plainville is 43 years: 44.7 years for males, and 40.5 years for females.

Demographics

The racial composition of Plainville includes 90.57% White, and smaller percentages for Black or African American, Native American, Asian, Native Hawaiian or Pacific Islander, other race and multiracial populations.

Population by Race

White

Two or more races

Black or African American

Native American

Asian

Native Hawaiian or Pacific Islander

Other race

Race	Population	Percentage (of total)
White	192	90.57%
Two or more races	20	9.43%
Black or African American	0	0%
Native American	0	0%
Asian	0	0%
Native Hawaiian or Pacific Islander	0	0%
Other race	0	0%

Plainville Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Plainville's average per capita income is $48,333. Household income levels show a median of $71,250. The poverty rate stands at 10.85%.

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	$83,125	-
Families	$78,750	$91,009
Households	$71,250	$90,100
Non Families	$60,833	$53,996

$48,333

Average Income

$71,250

Median Household Income

10.85%

Poverty Rate