Decatur Flag

Decatur

County:
Adams County
County Seat:
Yes
Area (mi²):
6.102
State:
Indiana

Decatur is a city located in Adams County, Indiana. Decatur has a 2025 population of 10,106 . It is also the county seat of Adams County . Decatur is currently growing at a rate of 0.34% annually and its population has increased by 1.71% since the most recent census, which recorded a population of 9,936 in 2020.

The average household income in Decatur is $65,511 with a poverty rate of 10.8%. The median age in Decatur is 43.6 years: 41.4 years for males, and 45.9 years for females. For every 100 females there are 94.8 males.

10.1K
Total Population
1,656
Density (mi²)
34 0.34%
Growth

Decatur Population

Decatur Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Decatur includes 90.03% White, 3.07% other race, and smaller percentages for Black or African American, Asian and multiracial populations.

Population by Race

White (90.03%)

Two or more races (5.75%)

Other race (3.07%)

Black or African American (1.14%)

Asian (0.01%)

Race
Population
Percentage (of total)
White8,79590.03%
Two or more races5625.75%
Other race3003.07%
Black or African American1111.14%
Asian10.01%

Decatur Marital Status

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

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Decatur's average per capita income is $42,337. Household income levels show a median of $58,867. The poverty rate stands at 10.8%.

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$91,434-
Families$73,516$77,923
Households$58,867$65,511
Non Families$39,696$48,007

$42,337

Average Income

$58,867

Median Household Income

10.8%

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)