McDonough County's estimated 2026 population is 25,717 with a growth rate of -0.77% in the past year according to the most recent United States census data. McDonough County is the 51st largest county in Illinois. The 2010 population was 32,631 and has seen a growth of -21.19% since that time.
Data after 2023 is projected based on recent change
Overall: 34.9 years
Female: 35.7 years
Male: 33.6 years
There are 22,070 adults, (5,199 of whom are seniors) in McDonough County.
Female: 13,690 (50.9%)
Male: 13,230 (49.1%)
The racial composition of McDonough County includes 86.35% White, 5.8% Black or African American, and smaller percentages for Asian, other race, Native Hawaiian or Pacific Islander, Native American and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 23,246 | 86.35% |
| Black or African American | 1,562 | 5.8% |
| Two or more races | 1,269 | 4.71% |
| Asian | 566 | 2.1% |
| Other race | 236 | 0.88% |
| Native Hawaiian or Pacific Islander | 24 | 0.09% |
| Native American | 17 | 0.06% |
McDonough County's average per capita income is $45,243. Household income levels show a median of $52,795. The poverty rate stands at 17.2%.
Name | Median | Mean |
|---|---|---|
| Married Families | $94,600 | - |
| Families | $80,503 | $100,183 |
| Households | $52,795 | $71,521 |
| Non Families | $32,239 | $42,953 |
Average Income
Median Household Income
Poverty Rate
