Carroll County's 2026 population is estimated at 20,197, reflecting a -0.52% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Carroll County is the 32nd largest county in Iowa. The 2010 population was 20,823 and has grown -3.01% since 2010.
Data after 2023 is projected based on recent change
Overall: 41.1 years
Female: 43.2 years
Male: 39.3 years
There are 15,574 adults, (4,361 of whom are seniors) in Carroll County.
Female: 10,295 (50%)
Male: 10,299 (50%)
The racial composition of Carroll County includes 92.91% White, and smaller percentages for other race, Black or African American, Asian, Native American and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 19,134 | 92.91% |
| Two or more races | 1,069 | 5.19% |
| Other race | 191 | 0.93% |
| Black or African American | 139 | 0.67% |
| Asian | 39 | 0.19% |
| Native American | 22 | 0.11% |
Carroll County 's average per capita income is $50,792. Household income levels show a median of $72,930. The poverty rate stands at 7.93%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $109,426 | - |
| Families | $98,539 | $114,824 |
| Households | $72,930 | $93,964 |
| Non Families | $44,517 | $59,162 |
Average Income
Median Household Income
Poverty Rate
