| Name | DeKalb County |
| State | Illinois |
| FIPS Code | 17037 |
| County Seat | Sycamore |
| Timezone | Central Standard Time (CST) |
| Population (2022) | 104,820 |
| Population Growth Rate(2000-2022) | -4.51% |
| Majority Ethnicity | White 88.25% |
| Public School Majority Ethnicity | White 60% |
| Partisan Voting Index | Democratic:+3 |
| Unemployment Rate (December 2024) | 4.5% |
| Area Code(s) | 815 / 779 / 224 / 847 |
| Race/Ethnicity | Percentage of Population (2022) |
|---|---|
| White | 88.25% |
| African American | 8.56% |
| Hispanic | 0.46% |
| Asian | 2.68% |
| Native American | 0.03% |
| Hawaiin/Pacific Islander | 0.03% |
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 59.62% |
| African American | 13.06% |
| Hispanic | 21.29% |
| Asian | 1.13% |
| Native American | 0.24% |
| Hawaiin/Pacific Islander | 0.06% |