| Name | Shelby County |
| State | Illinois |
| FIPS Code | 17173 |
| County Seat | Shelbyville |
| Timezone | Central Daylight Time (CDT) |
| Population (2024) | 20,593 |
| Population Growth Rate(2020-2024) | -1.87% |
| Majority Ethnicity | White 97.93% |
| Public School Majority Ethnicity | White 95% |
| Partisan Voting Index | Strongly Republican:+30 |
| Unemployment Rate (May 2026) | 5.1% |
| Sales Tax Rate (2025) | 7.25% |
| Area Code(s) | 217 / 618 |
| Race/Ethnicity | Percentage of Population (2023) |
|---|---|
| White | 97.93% |
| African American | 0.12% |
| Hispanic | 1.17% |
| Asian | 0.29% |
| Native American | 0.45% |
| Hawaiin/Pacific Islander | 0.05% |
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 95.07% |
| African American | 0.97% |
| Hispanic | 1.46% |
| Asian | 0.71% |
| Native American | 0.07% |
| Hawaiin/Pacific Islander | 0% |