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 2026 population of 10,140. 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 2.05% since the most recent census, which recorded a population of 9,936 in 2020.

The median household income in Decatur is $58,646 with a poverty rate of 11.27%. The median age in Decatur is 44.6 years: 42.5 years for males, and 46.4 years for females. For every 100 females there are 89.6 males.

10.1K
Total Population
1,662
Density (mi²)
34 0.34%
Growth

Decatur Population

Decatur Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
202610,140340.34%
202510,106340.34%
202410,072-11-0.11%
202310,083520.52%
202210,031520.52%
20219,979570.57%
20209,936991.01%
20199,837190.19%
20189,818330.34%
20179,785610.63%
20169,724540.56%
20159,670290.3%
20149,64160.06%
20139,635420.44%
20129,593-12-0.12%
20119,605-35-0.36%
20109,6402352.5%
20009,52888410.23%
19908,644-5-0.06%
19808,6492042.42%
19708,4451181.42%
19608,3271,05614.52%
19507,2711,41024.06%
19405,86170513.67%
19305,1563948.27%
19204,7622916.51%
19104,4713297.94%
19004,1421,00031.83%
18903,14200%

Median Age

Overall: 44.6 years
Female: 46.4 years
Male: 42.5 years

Decatur Adults

There are 7,880 adults, (2,000 of whom are seniors) in Decatur.

Sex Ratio

Female: 5,174 (52.7%)
Male: 4,637 (47.3%)

Demographics

The racial composition of Decatur includes 90.45% White, and smaller percentages for other race, Black or African American, Asian and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White8,87490.45%
Two or more races5765.87%
Other race2912.97%
Black or African American680.69%
Asian20.02%
Race
Population ↓
Percentage (of total)
Two or more races3673.74%
White3143.2%
Other race2692.74%
Race
Population ↓
Percentage (of total)
White8,56087.25%
Two or more races2092.13%
Black or African American680.69%
Other race220.22%
Asian20.02%

Decatur Marital Status

Economics and Income Statistics

Decatur 's average per capita income is $46,077. Household income levels show a median of $58,646. The poverty rate stands at 11.27%.

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$94,548-
Families$74,444$83,443
Households$58,646$68,241
Non Families$40,589$47,448

$46,077

Average Income

$58,646

Median Household Income

11.27%

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)