Plainville Flag

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.

261
Total Population
1,112
Density (mi²)
-2 -0.76%
Growth

Plainville Population

Plainville Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Plainville includes 90.57% White, and smaller percentages for and multiracial populations.

Population by Race

Race
Population
Percentage (of total)
White19290.57%
Two or more races209.43%

Plainville Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

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

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)