Total Population in Cass County, IL
ACS 2024 5-Year Estimates
12,784
Rank #2,298/3,222 · #81 in IL
29th
Cass 12,784
IL 13M -99.9%
US 330M
Total Population Trend
Rankings →Percentile Rank Over Time
Year-over-Year Population Change
National Distribution
How Cass County's total population of 12,784 compares to all 3,222 U.S. counties. Values range from 33 to 9,808,667.
Distribution of Total Population Across All Counties
Ranking Context
Counties ranked closest to Cass County for total population.
Nearby Rankings
Full ranking →| #2,295 | Morgan County, UT | 12,802 |
| #2,296 | Camp County, TX | 12,798 |
| #2,297 | Wright County, IA | 12,791 |
| #2,298 | Cass County, IL | 12,784 |
| #2,299 | Rains County, TX | 12,775 |
| #2,300 | Jefferson County, MT | 12,774 |
| #2,301 | Kodiak Island Borough, AK | 12,771 |
About Total Population
Cass County, Illinois has a total population of 12,784, ranking #2,298 of 3,222 counties nationwide — 100.0% below the national value of 330M. Within Illinois, it ranks #81 of 102. This places it in the 29th percentile nationally.
Total population count from the American Community Survey. Source: U.S. Census Bureau, American Community Survey 2024 5-Year Estimates. All values are estimates derived from survey samples and are subject to margin of error. For more information, see our methodology.