Kay County, Oklahoma Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 22nd-largest in Oklahoma
The population of Kay County, Oklahoma is 43,731 as of the 2023 American Community Survey, making it the 22nd-largest county in Oklahoma. The median household income is $56,673, the median home value is $116,800, and the median age is 38.3.
The population of Kay County has declined 6.4% since 2010 (46,428 → 43,437), a -0.47% annualized rate.
43,731
Population
-0.47%
Annual growth
48
People / sq mi
$56,673
Median Income
$116,800
Median Home Value
Kay County covers 920 sq mi of land at 47.6 people per square mile.
About Kay County, OK
Remote work is unusually rare in Kay County: 3.4% of workers primarily work from home, below the 14.0% national rate. Kay County is a county in Oklahoma with a population of 43,731. It ranks #22 among counties in Oklahoma by population.
The typical household here earns about $56,673, below the US median of $78,538. About 11.9% of residents live below the federal poverty level, close to the national 12.4%. Homes are comparatively cheap — a median value of $116,800, with typical rent around $830.
Roughly 18.5% of adults have a bachelor’s, below the national 35.0%. Home-based work is uncommon, at 3.4%, below the national 14.0%, and the average commute runs about 19 minutes each way.
Kay County Population History (2010-2024)
The county of Kay County had a population of 46,428 in 2010 and 43,437 in 2024, a -6.4% growth over 14 years. The peak was 46,428 in 2010. Average annual growth rate: -0.47%.
43,437
Population (2024)
46,428
Population (2010)
46,428
Peak (2010)
-0.47%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 46,428 |
| 2011 | 45,851 |
| 2012 | 45,692 |
| 2013 | 45,554 |
| 2014 | 45,475 |
| 2015 | 45,261 |
| 2016 | 44,937 |
| 2017 | 44,445 |
| 2018 | 44,047 |
| 2019 | 43,668 |
| 2020 | 43,611 |
| 2021 | 43,732 |
| 2022 | 43,726 |
| 2023 | 43,621 |
| 2024 | 43,437 |
Race & Ethnicity
| White | 74.4% |
| Black or African American | 2.2% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 15.8% |
| Two or More Races | 0.0% |
Age & Sex
38.3
Median Age
50.0%
Female
50.0%
Male
19.2%
Age 65+
Age Distribution
Children (under 15): 20.6% · Seniors (65+): 19.2%
Income & Poverty
| Median household income | $56,673$-6,930 vs state |
| Mean household income | $77,337 |
| Per-capita income | $31,190 |
| Poverty rate | 11.9%+0.8% vs state |
| Unemployment rate | 3.5% |
| Employment-to-population | 55.4% |
Top Industries by Employment
The largest employment sector in Kay County is professional & business services, accounting for 22.3% of workers.
How residents commute
0.0%
Drive alone
1.6%
Carpool
80.8%
Public transit
3.4%
Work from home
18.5 min
Avg commute
Housing
$116,800$-69,100 vs state
Median home value
$830
Median rent
67.7%
Homeownership rate
20,923
Total housing units
79.9%
Occupied
20.1%
Vacant
32.3%
Renter-occupied
Social & access
87.3%
With health insurance
91.9%
With broadband internet
32.4%
Foreign-born
9.5%
Veterans (18+)
18.8%
With a disability
93.7%
Speak language other than English at home
Education
90.5%
High School+
18.5%
Bachelor's+
Largest cities in Oklahoma
Other counties in Oklahoma
Part of Oklahoma
Metro areas in Oklahoma
County rankings
Frequently Asked Questions
Kay County, Oklahoma has a population of 43,731 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 22nd-largest county in Oklahoma. Population density is 48 people per square mile.
The population of Kay County has declined 6.4% since 2010 (46,428 → 43,437), a -0.47% annualized rate.
The median household income in Kay County, Oklahoma is $56,673, with mean (average) household income of $77,337 and per-capita income of $31,190. 11.9% of residents live below the federal poverty level.
In Kay County, the largest racial and ethnic groups are White (74.4%), Hispanic or Latino (15.8%), Black or African American (2.2%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Kay County, Oklahoma is 38.3 years. Residents are 50.0% female and 50.0% male.
The median home value in Kay County is $116,800 and median monthly rent is $830. 67.7% of occupied housing units are owner-occupied. The county has 20,923 total housing units, 20.1% of which are vacant.
The largest employment sector in Kay County, Oklahoma is professional, scientific, and management services, employing 22.3% of workers. The unemployment rate is 3.5%.
Oklahoma City is among the largest cities associated with Kay County, Oklahoma, with a population of 688,693.
Kay County, OK Climate
Kay County, OK has an average annual temperature of 14.8°C (59°F) and receives about 911 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
14.8°C
Avg Temp
911
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | 1° / 33° | 25 mm |
| February | 4° / 39° | 34 mm |
| March | 9° / 49° | 71 mm |
| April | 15° / 58° | 92 mm |
| May | 20° / 67° | 119 mm |
| June | 25° / 77° | 114 mm |
| July | 28° / 82° | 86 mm |
| August | 27° / 81° | 84 mm |
| September | 23° / 73° | 103 mm |
| October | 16° / 61° | 79 mm |
| November | 8° / 47° | 63 mm |
| December | 3° / 37° | 41 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Kay County, OK
The most comfortable months to visit Kay County, OK are typically September, May and October, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 34°C high). The coldest is January (near -5°C low). May is usually the wettest month.
Where to stay near Kay County
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Statewide data for Oklahoma
Population, race, income, age, and trends across Oklahoma
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.