Douglas County's estimated 2026 population is 20,006 with a growth rate of 0.46% in the past year according to the most recent United States census data. Douglas County is the 57th largest county in Illinois. The 2010 population was 19,977 and has seen a growth of 0.15% since that time.
Data after 2023 is projected based on recent change
The racial composition of Douglas County includes 90.49% White, and smaller percentages for other race, Black or African American, Asian, Native American and multiracial populations.
White (90.49%)
Two or more races (5.68%)
Other race (1.71%)
Black or African American (1.36%)
Asian (0.45%)
Native American (0.31%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 17,814 | 90.49% |
| Two or more races | 1,119 | 5.68% |
| Other race | 336 | 1.71% |
| Black or African American | 267 | 1.36% |
| Asian | 89 | 0.45% |
| Native American | 61 | 0.31% |
Married
Widowed
Divorced
Separated
Never Married
Douglas County's average per capita income is $45,422. Household income levels show a median of $74,186. The poverty rate stands at 8.88%.
Name | Median | Mean |
|---|---|---|
| Married Families | $98,248 | - |
| Families | $87,355 | $100,961 |
| Households | $74,186 | $87,643 |
| Non Families | $37,959 | $53,684 |
Average Income
Median Household Income
Poverty Rate
