Decker Flag

Decker

County:
Richland County
County Seat:
No
Area (mi²):
35.239
State:
Illinois

Decker is located in Richland County, Illinois. Decker has a 2025 population of 401 . Decker is currently declining at a rate of -0.99% annually and its population has decreased by -3.37% since the most recent census, which recorded a population of 415 in 2020.

The average household income in Decker is $115,000 with a poverty rate of 0%. The median age in Decker is 54 years: 57 years for males, and 50.9 years for females. For every 100 females there are 87.6 males.

401
Total Population
11
Density (mi²)
-4 -0.99%
Growth

Decker Population

Decker Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Decker includes 100% White, and smaller percentages for and multiracial populations.

Population by Race

White (100%)

Race
Population
Percentage (of total)
White362100%

Decker Marital Status

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

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Decker's average per capita income is $47,831. Household income levels show a median of $89,375. 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
Families$95,956$122,846
Married Families$95,956-
Households$89,375$115,000
Non Families--

$47,831

Average Income

$89,375

Median Household Income

0%

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)