Share of the population by age and sex, five-year groups

Population of Kansas, 2010–2025 · click to pick a year
Estimates up to 2019 are built on the 2010 Census, those from 2020 on the 2020 Census. A line that steps up or down between 2019 and 2020 reflects this re-basing, not a sudden change in population.

Year

-5 -1   2025  +1 +5

2,977,220 people lived in Kansas on July 1, 2025: the 34th-largest population among the 50 states and the District of Columbia. The median age was 38.1 years (United States: 39.4); more residents are 65 or older (18.9%) than under 15 (18.7%): an ageing, top-heavy pyramid. There were 99.0 men for every 100 women. Since 2010 the population has grown by 4.2%. Source: U.S. Census Bureau, Population Estimates Program, Vintage 2025 estimates (resident population on July 1; public domain). Median age, shares, dependency ratios and rankings are calculated by PopulationPyramid.net from these estimates; the Census Bureau does not endorse this site.

Key indicators, 2025
Population
2,977,220
Rank by population
34th of 51
Median age
38.1
Men per 100 women
99.0
Under 15
18.7%
15–64
62.4%
65 and over
18.9%
Child dependency
29.9
Old-age dependency
30.2
Change since 2010
+4.2%
Dependency ratios count children under 15 or adults 65 and over per 100 residents aged 15 to 64.
Show the population by age group, 2025
AgeMenWomenTotalShare
0-488,93184,163173,0945.8%
5-994,93490,539185,4736.2%
10-14101,36896,833198,2016.7%
15-19110,031104,590214,6217.2%
20-24116,404105,336221,7407.4%
25-2997,72291,440189,1626.4%
30-3495,06991,106186,1756.3%
35-3996,64894,538191,1866.4%
40-4496,46694,892191,3586.4%
45-4985,61384,818170,4315.7%
50-5478,86179,692158,5535.3%
55-5978,65580,197158,8525.3%
60-6485,83991,216177,0555.9%
65-6982,50991,143173,6525.8%
70-7469,37078,428147,7985.0%
75-7950,69959,189109,8883.7%
80-8428,66838,06766,7352.2%
85+23,68139,56563,2462.1%
How Kansas compares with similar-sized states, 2025
RankStateResidentsRelative
31 Nevada 3,282,188
32 Iowa 3,238,387
33 Arkansas 3,114,791
34 Kansas 2,977,220
35 Mississippi 2,954,160
36 New Mexico 2,125,498
37 Idaho 2,029,733
Frequently asked questions about Kansas's population
What is the population of Kansas?
Kansas had an estimated 2,977,220 residents on July 1, 2025, according to the U.S. Census Bureau, Population Estimates Program. That ranks 34th among the 51 states and the District of Columbia.
What is the median age in Kansas?
The median age in Kansas was 38.1 years in 2025, the 42nd oldest of the 51 states and DC. That is 1.3 years younger than the national median of 39.4.
How many people in Kansas are 65 or older?
About 561,319 residents of Kansas (18.9%) were 65 or older in 2025, against 18.7% under 15 and 62.4% aged 15 to 64.
What does the population pyramid of Kansas show?
In 2025, Kansas: more residents are 65 or older (18.9%) than under 15 (18.7%): an ageing, top-heavy pyramid. There were 99.0 men for every 100 women.
How fast is the population of Kansas changing?
The population of Kansas grew by 4.2% between 2010 and 2025, and by 0.4% in the last year.
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