Dupo Flag

Dupo

County Seat:
No
Area (mi²):
6.403
State:
Illinois

Dupo is a village located in St. Clair County, Illinois. Dupo has a 2025 population of 3,717. Dupo is currently declining at a rate of -1.38% annually and its population has decreased by -6.51% since the most recent census, which recorded a population of 3,976 in 2020.

The average household income in Dupo is $76,366 with a poverty rate of 9.91%. The median age in Dupo is 43.1 years: 39.3 years for males, and 43.7 years for females.

3.7K
Total Population
581
Density (mi²)
-52 -1.38%
Growth

Dupo Population

Dupo Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Dupo includes 87.02% White, 6.64% Black or African American, and smaller percentages for and multiracial populations.

Population by Race

White (87.0%)

Black or African American (6.6%)

Two or more races (6.3%)

Race
Population
Percentage (of total)
White3,40687.02%
Black or African American2606.64%
Two or more races2486.34%

Dupo Marital Status

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

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Dupo's average per capita income is $36,282. Household income levels show a median of $57,899. The poverty rate stands at 9.91%.

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$87,645-
Families$73,552$88,259
Households$57,899$76,366
Non Families$39,350$47,140

$36,282

Average Income

$57,899

Median Household Income

9.91%

Poverty Rate

Nearby Cities

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)