With 43,625 people, Kay County is a county in Oklahoma. 19% of adults hold a bachelor's degree, below the 36% national rate. Home values have more than doubled since 2000, reaching $124,700. 3% of locals were born outside the United States. Renters pay $842 a month at the median. Density works out to 47 people per square mile.
At a glance
Lower income
median household income $58,423, below the US median
US median: $82,259
Mid-age
median age 38.5
US median: 38.9
Less educated
19% hold a bachelor's degree
US average: 36%
Less affordable
home values up 27%, inflation adjusted
US median home: $376,019
Unique to this place
What stands out about Kay County
What changed most since 1990
Median home value (2024 dollars)$101,043 → $124,700(+23%)US over the same years: +67%
Median age35.6 → 38.5(+2.9 years)US over the same years: +6.0 years
Shares are "alone or in combination": a person with both Medicare and Medicaid counts in each, so categories overlap and do not sum to 100%.
Section 09 · Service history
Veterans
Veterans by period of service, 2024
Gulf War (2001 or later)26.6%(732)
US avg: 26.4%
Gulf War (1990s)19.5%(537)
US avg: 24.3%
Vietnam era35.5%(975)
US avg: 33.1%
Korean War7.4%(203)
US avg: 4.5%
World War II0.4%(12)
US avg: 1%
Share of the 2,749 veterans here. A veteran who served across eras counts in each, so shares can total more than 100%. Peacetime-only service is included in the total but not shown as an era.
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Over time
Kay County, decade by decade
Kay County population, inflation-adjusted income and home value, education, and diversity by year
Year
Population
Median household income
Median home value
Bachelor's degree+
Diversity score
1990
48,056
$58,310
$101,043
18.5%
25.9
2000
48,080
$56,038
$98,187
18.3%
38.1
2010
46,562
$56,831
$107,461
19.9%
47.2
2020
43,700
$57,519
$117,204
19.3%
59.2
2024
43,625
$58,423
$124,700
19.2%
56.7
Census years come from the decennial census and the latest year from the American Community Survey, so part of any change between those two rows can reflect the different surveys. Dollar figures are adjusted for inflation to 2024 dollars; a figure ending in "+" was at the Census Bureau's reporting cap that year. The diversity score runs from 0 to 100; see how it's calculated.
