Kay County, Oklahoma
Located in Oklahoma, Kay County has a population of 43,625 residents and a median age of 38.5 years, making it the #1,133 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 16.0%. The median home value is $124,700, and the median household income is $58,423, which is 22% below the national median.
Demographics
Kay County has a population of 43,625, making it the #1,133 most populous county in the US. The median age is 38.5 years, which is 1.0% below the national median.
Population Trend
Rankings →Year-over-Year Population Growth
Age & Sex Distribution
Race & Ethnicity
Nativity
Geographic Mobility (Past Year)
Economy
The median household income in Kay County is $58,423, ranking #2,230 out of 3,222 counties — 22.3% below the national median. The poverty rate is 16.0% and unemployment stands at 5.8%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Kay County is $124,700 (-55.8% vs national). Renters pay a median of $842/mo and the homeownership rate is 69.2%.
Median Home Value Trend
Rankings →Household Type
Education
In Kay County, 19.2% of adults age 25+ hold a bachelor's degree or higher, which is 42.9% below the national average, ranking #2,140 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Kay County is 71.8 years. 20.6% of adults report poor or fair health and 14.1% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
17.8% of adults in Kay County smoke , 44.0% are obese , and 15.1% report excessive drinking. The drug overdose death rate is 17.6 per 100,000.
Adult Smoking Trend
Safety
The homicide rate in Kay County is 6.5 per 100,000 and the suicide rate is 30.2 per 100,000. Motor vehicle deaths occur at a rate of 16.6 per 100,000.
Homicide Rate Trend
Families & Children
27.0% of children in Kay County live in poverty and the infant mortality rate is 7.7 per 1,000 live births. The teen birth rate is 33.5 per 1,000 females age 15–19.
Infant Mortality Trend
Civic & Transportation
Voter turnout in Kay County is 53.1%. The mean commute time is 20.1 min, which is 27.0% below the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Kay County voted Republican with a margin of 49.3%. The vote was 24.5% Dem / 73.8% Rep. Compared to 2020, the margin shifted +1.7 toward Democrats .
Vote Share Over Time
About Kay County, Oklahoma
Kay County, Oklahoma has a total population of 43,625, making it the 1,133rd most populous county in the United States. The median age in Kay County is 38.5 years, which is 1.0% below the national median of 38.9 years.
The median household income in Kay County is $58,423, which ranks #2,230 of 3,222 counties nationwide. This is 22.3% below the national median of $75,149. The poverty rate is 16.0%, higher than the national rate of 12.6%. The unemployment rate stands at 5.8%.
The median home value in Kay County is $124,700, 55.8% below the national median. Renters in Kay County pay a median gross rent of $842 per month. The homeownership rate is 69.2%, compared to the national rate of 64.4%.
In Kay County, 19.2% of residents aged 25 and older hold a bachelor's degree or higher, 42.9% below the national average of 33.7%. Health insurance coverage stands at 88.7% of the population. The average commute time for workers is 20.1 min.
Kay County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 71.2% of the population, followed by Two or More Races (9.7%) and Hispanic or Latino (9.0%).
All data for Kay County, Oklahoma comes from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates. These figures are estimates based on survey sampling and are subject to margin of error. For the most detailed and up-to-date data, visit the Census Bureau's official data portal.