City in Adams County, Indiana · 6.1 sq mi · 1,660 people per sq mi
About 10,000 people live in Decatur. The typical household earns $58,646, and the median resident is 44.6 years old.
2026 projection
From 9,929 in 2020
Poverty rate 11.27%
Men 42.5 · Women 46.4
1850–2026
10,127
2026 projection
2% since 2020 (increase)
Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
1850–2026
10,127
2026 projection
2% since 2020 (increase)
Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
| 2026 | 10,127 | +37 | 0.37% |
|---|---|---|---|
| 2025 | 10,090 | +11 | 0.11% |
| 2024 | 10,079 | +4 | 0.04% |
| 2023 | 10,075 | +60 | 0.60% |
| 2022 | 10,015 | +43 | 0.43% |
| 2021 | 9,972 | +43 | 0.43% |
| 2020 | 9,929 | +92 | 0.94% |
| 2019 | 9,837 | +19 | 0.19% |
| 2018 | 9,818 | +33 | 0.34% |
| 2017 | 9,785 | +61 | 0.63% |
Showing 10 of 33 years.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101
Each square is about 1% of residents (roughly 98 people).
Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002
Half of households earn more, half earn less
Typical yearly pay for a worker 25 or older.
About 1 in 9 residents
46% of residents age 15 and older are married.
| Status | Overall | Male | Female |
|---|---|---|---|
| Married | 46% | 50% | 42% |
| Never married | 22% | 24% | 21% |
| Divorced | 21% | 22% | 20% |
| Widowed | 10% | 3% | 16% |
| Separated | 1% | 2% | 1% |
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201
10 sources, all from the U.S. Census Bureau