Total Population in DeKalb County, IL
ACS 2024 5-Year Estimates
How DeKalb County Compares
National Distribution
Where DeKalb County falls among all 3,222 U.S. counties for total population.
■ DeKalb County: 100,703
Ranking Context
| Rank | County | Value |
|---|---|---|
| #613 | Laramie County, WY | 101,060 |
| #614 | Cleveland County, NC | 100,991 |
| #615 | Columbiana County, OH | 100,704 |
| #616 | DeKalb County, IL | 100,703 |
| #617 | Burleigh County, ND | 100,600 |
| #618 | Sherburne County, MN | 100,560 |
| #619 | Story County, IA | 100,466 |
Total Population in DeKalb County, Illinois
DeKalb County, Illinois has a total population of 100,703, which ranks #616 of 3,222 out of 3,222 counties nationwide. This is 100.0% below the national value of 330M.
Within Illinois, DeKalb County ranks #20 of 102 out of 102 counties. This places it in the 81th percentile nationally.
Total population count from the American Community Survey. All data comes from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates for 2024.
About this data
Source: U.S. Census Bureau, American Community Survey 5-Year Estimates (2024). All values are estimates derived from survey samples and are subject to margin of error. For more information, see our methodology.