County in Illinois · 759 sq mi · 27 people per sq mi
20,598 people live in Shelby County. The typical household earns $72,095, and the median resident is 45.3 years old.
2026 projection
From 20,921 in 2020
Poverty rate 9.15%
Men 44.1 · Women 46.7
1830–2026
20,598
2026 projection
1.5% 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.
1830–2026
20,598
2026 projection
1.5% 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 | 20,598 | +22 | 0.11% |
|---|---|---|---|
| 2025 | 20,576 | +22 | 0.11% |
| 2024 | 20,554 | -50 | 0.24% |
| 2023 | 20,604 | -117 | 0.56% |
| 2022 | 20,721 | -155 | 0.74% |
| 2021 | 20,876 | -45 | 0.22% |
| 2020 | 20,921 | -704 | 3.26% |
| 2019 | 21,625 | -60 | 0.28% |
| 2018 | 21,685 | -88 | 0.40% |
| 2017 | 21,773 | +39 | 0.18% |
Showing 10 of 34 years.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101
Each square is about 1% of residents (roughly 207 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 11 residents
59% of residents age 15 and older are married.
| Status | Overall | Male | Female |
|---|---|---|---|
| Married | 59% | 60% | 57% |
| Never married | 22% | 26% | 18% |
| Divorced | 12% | 10% | 13% |
| Widowed | 7% | 4% | 10% |
| Separated | <1% | <1% | 1% |
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201
8 sources, all from the U.S. Census Bureau