Mount Carroll is a city located in Carroll County, Illinois. Mount Carroll has a 2026 population of 1,410. It is also the county seat of Carroll County. Mount Carroll is currently declining at a rate of -0.77% annually and its population has decreased by -4.67% since the most recent census, which recorded a population of 1,479 in 2020.
The median household income in Mount Carroll is $58,500 with a poverty rate of 14.09%. The median age in Mount Carroll is 43.2 years: 43 years for males, and 43.3 years for females. For every 100 females there are 86.9 males.
Data after 2023 is projected based on recent change
Overall: 43.2 years
Female: 43.3 years
Male: 43 years
There are 1,213 adults, (325 of whom are seniors) in Mount Carroll.
Female: 803 (53.5%)
Male: 698 (46.5%)
The racial composition of Mount Carroll includes 94.8% White, and smaller percentages for Two or more races, Asian, Black or African American, other race and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 1,423 | 94.8% |
| Two or more races | 30 | 2% |
| Asian | 22 | 1.47% |
| Black or African American | 16 | 1.07% |
| Other race | 10 | 0.67% |
Mount Carroll 's average per capita income is $37,065. Household income levels show a median of $58,500. The poverty rate stands at 14.09%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $90,139 | - |
| Households | $58,500 | $69,468 |
| Families | $54,348 | $75,399 |
| Non Families | $50,658 | $51,531 |
Average Income
Median Household Income
Poverty Rate