Clinton County's estimated 2026 population is 45,777 with a growth rate of -0.26% in the past year according to the most recent United States census data. Clinton County is the 12th largest county in Iowa. The 2010 population was 49,091 and has seen a growth of -6.75% since that time.
Data after 2023 is projected based on recent change
The racial composition of Clinton County includes 90.33% White, and smaller percentages for Black or African American, Asian, other race, Native American and multiracial populations.
White (90.33%)
Two or more races (5.39%)
Black or African American (2.93%)
Asian (0.75%)
Other race (0.37%)
Native American (0.23%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 41,897 | 90.33% |
| Two or more races | 2,501 | 5.39% |
| Black or African American | 1,357 | 2.93% |
| Asian | 350 | 0.75% |
| Other race | 172 | 0.37% |
| Native American | 106 | 0.23% |
Married
Widowed
Divorced
Separated
Never Married
Clinton County's average per capita income is $46,399. Household income levels show a median of $65,177. The poverty rate stands at 13.14%.
Name | Median | Mean |
|---|---|---|
| Married Families | $99,879 | $118,976 |
| Families | $86,194 | $102,489 |
| Households | $65,177 | $85,010 |
| Non Families | $37,618 | $51,677 |
Average Income
Median Household Income
Poverty Rate
