Kay County's 2026 population is estimated at 43,069, reflecting a -0.43% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Kay County is the 24th largest county in Oklahoma. The 2010 population was 46,428 and has grown -7.23% since 2010.
Data after 2023 is projected based on recent change
Overall: 38.5 years
Female: 39.6 years
Male: 37.4 years
There are 32,803 adults, (8,448 of whom are seniors) in Kay County.
Female: 21,687 (49.7%)
Male: 21,938 (50.3%)
The racial composition of Kay County includes 74.13% White, 7.43% Native American, 3.05% other race, and smaller percentages for Black or African American, Native Hawaiian or Pacific Islander, Asian and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 32,338 | 74.13% |
| Two or more races | 5,368 | 12.3% |
| Native American | 3,240 | 7.43% |
| Other race | 1,330 | 3.05% |
| Black or African American | 864 | 1.98% |
| Native Hawaiian or Pacific Islander | 254 | 0.58% |
| Asian | 231 | 0.53% |
Kay County 's average per capita income is $40,522. Household income levels show a median of $58,423. The poverty rate stands at 16%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $87,191 | $107,885 |
| Families | $73,504 | $92,150 |
| Households | $58,423 | $77,308 |
| Non Families | $34,587 | $46,822 |
Average Income
Median Household Income
Poverty Rate
