Cass County's estimated 2025 population is 12,512 with a growth rate of -0.33% in the past year according to the most recent United States census data. Cass County is the 81st largest county in Illinois. The 2010 population was 13,632 and has seen a growth of -8.22% since that time.
Data after 2023 is projected based on recent change
The racial composition of Cass County includes 77.69% White, 8.69% other race, 3.81% Black or African American, and smaller percentages for Asian, Native Hawaiian or Pacific Islander, Native American and multiracial populations.
White
Other race
Two or more races
Black or African American
Asian
Native Hawaiian or Pacific Islander
Native American
Race | Population | Percentage (of total) |
|---|---|---|
| White | 9,965 | 77.69% |
| Other race | 1,115 | 8.69% |
| Two or more races | 1,020 | 7.95% |
| Black or African American | 489 | 3.81% |
| Asian | 102 | 0.8% |
| Native Hawaiian or Pacific Islander | 75 | 0.58% |
| Native American | 60 | 0.47% |
Married
Widowed
Divorced
Separated
Never Married
Cass County's average per capita income is $44,965. Household income levels show a median of $64,907. The poverty rate stands at 10.9%.
Name | Median | Mean |
|---|---|---|
| Married Families | $84,177 | - |
| Families | $76,426 | $91,797 |
| Households | $64,907 | $78,834 |
| Non Families | $38,434 | $49,980 |
Average Income
Median Household Income
Poverty Rate
