Clay County's 2026 population is estimated at 7,915, reflecting a -0.34% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Clay County is the 48th largest county in Kansas. The 2010 population was 8,544 and has grown -7.36% since 2010.
Data after 2023 is projected based on recent change
Overall: 43.7 years
Female: 45.1 years
Male: 43.2 years
There are 6,195 adults, (1,946 of whom are seniors) in Clay County.
Female: 3,920 (48.7%)
Male: 4,128 (51.3%)
The racial composition of Clay County includes 92.07% White, and smaller percentages for Black or African American, Asian, Native American, other race and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 7,410 | 92.07% |
| Two or more races | 336 | 4.17% |
| Black or African American | 193 | 2.4% |
| Asian | 45 | 0.56% |
| Native American | 38 | 0.47% |
| Other race | 26 | 0.32% |
Clay County 's average per capita income is $49,428. Household income levels show a median of $66,176. The poverty rate stands at 13.35%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $96,759 | - |
| Families | $75,530 | $97,693 |
| Households | $66,176 | $84,799 |
| Non Families | $33,654 | $46,398 |
Average Income
Median Household Income
Poverty Rate