Mount Vernon is a city located in Jefferson County, Illinois. Mount Vernon has a 2025 population of 14,060 . It is also the county seat of Jefferson County . Mount Vernon is currently declining at a rate of -0.72% annually and its population has decreased by -3.5% since the most recent census, which recorded a population of 14,570 in 2020.
The average household income in Mount Vernon is $67,340 with a poverty rate of 18.72%. The median age in Mount Vernon is 39 years: 34.8 years for males, and 43.5 years for females. For every 100 females there are 101.7 males.
Data after 2023 is projected based on recent change
The racial composition of Mount Vernon includes 76.39% White, 12.67% Black or African American, and smaller percentages for Asian, other race, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
White (76.39%)
Black or African American (12.67%)
Two or more races (8.56%)
Asian (1.15%)
Other race (1.07%)
Native American (0.1%)
Native Hawaiian or Pacific Islander (0.06%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 11,071 | 76.39% |
| Black or African American | 1,836 | 12.67% |
| Two or more races | 1,241 | 8.56% |
| Asian | 167 | 1.15% |
| Other race | 155 | 1.07% |
| Native American | 14 | 0.1% |
| Native Hawaiian or Pacific Islander | 8 | 0.06% |
Married
Widowed
Divorced
Separated
Never Married
Mount Vernon's average per capita income is $36,963. Household income levels show a median of $52,751. The poverty rate stands at 18.72%.
Name | Median | Mean |
|---|---|---|
| Married Families | $77,210 | - |
| Families | $60,647 | $75,001 |
| Households | $52,751 | $67,340 |
| Non Families | $36,696 | $51,950 |
Average Income
Median Household Income
Poverty Rate