Mount Sterling is a city located in Brown County, Illinois. Mount Sterling has a 2025 population of 2,038 . It is also the county seat of Brown County . Mount Sterling is currently growing at a rate of 0.34% annually and its population has increased by 1.85% since the most recent census, which recorded a population of 2,001 in 2020.
The average household income in Mount Sterling is $77,757 with a poverty rate of 11.91%. The median age in Mount Sterling is 36.7 years: 34.3 years for males, and 38.3 years for females. For every 100 females there are 100.1 males.
Data after 2023 is projected based on recent change
The racial composition of Mount Sterling includes 95.38% White, and smaller percentages for Black or African American, Two or more races, other race and multiracial populations.
White (95.38%)
Black or African American (2.67%)
Two or more races (1.23%)
Other race (0.72%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 1,859 | 95.38% |
| Black or African American | 52 | 2.67% |
| Two or more races | 24 | 1.23% |
| Other race | 14 | 0.72% |
Married
Widowed
Divorced
Separated
Never Married
Mount Sterling's average per capita income is $44,669. Household income levels show a median of $63,922. The poverty rate stands at 11.91%.
Name | Median | Mean |
|---|---|---|
| Married Families | $85,699 | - |
| Families | $76,023 | $77,817 |
| Households | $63,922 | $77,757 |
| Non Families | $43,269 | $73,682 |
Average Income
Median Household Income
Poverty Rate