Clayton County's estimated 2025 population is 16,793 with a growth rate of -0.52% in the past year according to the most recent United States census data. Clayton County is the 42nd largest county in Iowa. The 2010 population was 18,080 and has seen a growth of -7.12% since that time.
Data after 2023 is projected based on recent change
The racial composition of Clayton County includes 95.89% White, and smaller percentages for Two or more races, Black or African American, other race, Asian, Native American and multiracial populations.
White (95.9%)
Two or more races (2.5%)
Black or African American (0.7%)
Other race (0.5%)
Asian (0.3%)
Native American (0.1%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 16,368 | 95.89% |
| Two or more races | 429 | 2.51% |
| Black or African American | 112 | 0.66% |
| Other race | 94 | 0.55% |
| Asian | 53 | 0.31% |
| Native American | 13 | 0.08% |
Married
Widowed
Divorced
Separated
Never Married
Clayton County's average per capita income is $45,801. Household income levels show a median of $62,326. The poverty rate stands at 13.63%.
Name | Median | Mean |
|---|---|---|
| Married Families | $91,768 | - |
| Families | $77,578 | $96,680 |
| Households | $62,326 | $81,457 |
| Non Families | $41,414 | $54,024 |
Average Income
Median Household Income
Poverty Rate
