Kay County Population

1890–2026

43,343

2026 projection

0.6% since 2020 (decrease)

010K20K30K40K50K60K1900192019401960198020002020

Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.

Use the left and right arrow keys to inspect population observations.

Population by year

Population estimates for Kay County. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
202643,343-1470.34%
202543,490-1470.34%
202443,637-1380.32%
202343,775+110.03%
202243,764+160.04%
202143,748+1430.33%
202043,605-630.14%
201943,668-3790.86%
201844,047-3980.90%
201744,445-4921.09%

Showing 10 of 28 years.

Kay County Demographics

38.5median age

Median age

Female39.6 yrs
Male37.4 yrs

Adults

32,803
8,448 seniors (65+) · 26% of adults24,355 other adults

Sex

Female 49.7% · 21,687Male 50.3% · 21,938

Population by age

MaleFemale85+ years, male: 39385+ years, female: 57980–84 years, male: 44980–84 years, female: 57975–79 years, male: 73775–79 years, female: 87370–74 years, male: 1,17970–74 years, female: 1,23865–69 years, male: 1,07465–69 years, female: 1,34760–64 years, male: 1,25960–64 years, female: 1,29555–59 years, male: 1,43855–59 years, female: 1,35750–54 years, male: 1,30050–54 years, female: 1,11745–49 years, male: 1,13245–49 years, female: 1,14940–44 years, male: 1,33640–44 years, female: 1,20335–39 years, male: 1,33235–39 years, female: 1,31230–34 years, male: 1,27730–34 years, female: 1,33725–29 years, male: 1,30025–29 years, female: 1,31520–24 years, male: 1,46020–24 years, female: 1,19915–19 years, male: 1,69915–19 years, female: 1,47810–14 years, male: 1,70510–14 years, female: 1,5575–9 years, male: 1,4695–9 years, female: 1,4850–4 years, male: 1,3990–4 years, female: 1,26785+80–8475–7970–7465–6960–6455–5950–5445–4940–4435–3930–3425–2920–2415–1910–145–90–45005001K1K1.5K1.5K

Hover or tap an age group to see exact counts. Use the up and down arrow keys to inspect age groups.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101

Race and ethnicity

Tap a square or a group below to highlight it.

Each square is about 1% of residents (roughly 436 people).

Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002

Kay County Income

$58,423median household income

Median household income

$58,423

Half of households earn more, half earn less

Median earnings

$40,522

Typical yearly pay for a worker 25 or older.

Poverty rate

16%

About 1 in 6 residents

U.S. Census Bureau, 2024 ACS 5-year estimates · Tables S1901, S1501, S1701

Kay County Marital Status

46% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married46%46%46%
Never married29%34%24%
Divorced15%14%16%
Widowed8%5%12%
Separated2%2%3%

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201

Sources

8 sources, all from the U.S. Census Bureau

Population

American Community Survey, 2024 5-year