Clay County's estimated 2025 population is 16,519 with a growth rate of 0.02% in the past year according to the most recent United States census data. Clay County is the 44th largest county in Iowa. The 2010 population was 16,633 and has seen a growth of -0.69% since that time.
Data after 2023 is projected based on recent change
The racial composition of Clay County includes 94.56% White, and smaller percentages for Black or African American, Native American, other race, Asian and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 15,552 | 94.56% |
| Two or more races | 618 | 3.76% |
| Black or African American | 90 | 0.55% |
| Native American | 72 | 0.44% |
| Other race | 60 | 0.36% |
| Asian | 54 | 0.33% |
Married
Widowed
Divorced
Separated
Never Married
Clay County's average per capita income is $46,528. Household income levels show a median of $64,082. The poverty rate stands at 11.45%.
Name | Median | Mean |
|---|---|---|
| Married Families | $102,219 | - |
| Families | $92,188 | $107,732 |
| Households | $64,082 | $83,566 |
| Non Families | $38,931 | $51,942 |
Average Income
Median Household Income
Poverty Rate
