County in Iowa · 532 sq mi · 14 people per sq mi
7,635 people live in Decatur County. The typical household earns $59,044, and the median resident is 36.1 years old.
2026 projection
From 7,728 in 2020
Poverty rate 14.56%
Men 34.1 · Women 38.6
1850–2026
7,635
2026 projection
1.2% since 2020 (decrease)
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
7,635
2026 projection
1.2% since 2020 (decrease)
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 | 7,635 | -20 | 0.26% |
|---|---|---|---|
| 2025 | 7,655 | -20 | 0.26% |
| 2024 | 7,675 | -102 | 1.31% |
| 2023 | 7,777 | -30 | 0.38% |
| 2022 | 7,807 | +11 | 0.14% |
| 2021 | 7,796 | +68 | 0.88% |
| 2020 | 7,728 | -124 | 1.58% |
| 2019 | 7,852 | -49 | 0.62% |
| 2018 | 7,901 | -55 | 0.69% |
| 2017 | 7,956 | -105 | 1.30% |
Showing 10 of 32 years.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101
Each square is about 1% of residents (roughly 78 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 7 residents
50% of residents age 15 and older are married.
| Status | Overall | Male | Female |
|---|---|---|---|
| Married | 50% | 53% | 48% |
| Never married | 31% | 34% | 28% |
| Divorced | 11% | 10% | 12% |
| Widowed | 7% | 3% | 11% |
| Separated | 1% | 1% | 1% |
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201
8 sources, all from the U.S. Census Bureau