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   2021  +1 +5

2,938,966 people lived in Kansas on July 1, 2021: the 35th-largest population among the 50 states and the District of Columbia. The median age was 37.6 years (United States: 38.9); children (19.7%) and older adults (17.2%) make up similar shares of the population. There were 99.1 men for every 100 women. Since 2010 the population has grown by 2.8%. 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, 2021
Population
2,938,966
Rank by population
35th of 51
Median age
37.6
Men per 100 women
99.1
Under 15
19.7%
15–64
63.1%
65 and over
17.2%
Child dependency
31.2
Old-age dependency
27.3
Change since 2010
+2.8%
Dependency ratios count children under 15 or adults 65 and over per 100 residents aged 15 to 64.
Show the population by age group, 2021
AgeMenWomenTotalShare
0-491,42086,660178,0806.1%
5-999,55395,184194,7376.6%
10-14105,380101,148206,5287.0%
15-19107,993101,782209,7757.1%
20-24108,91799,316208,2337.1%
25-2994,04088,773182,8136.2%
30-3495,96592,824188,7896.4%
35-3997,20595,371192,5766.6%
40-4490,74788,479179,2266.1%
45-4980,44779,640160,0875.4%
50-5482,34582,963165,3085.6%
55-5988,60591,032179,6376.1%
60-6490,82996,835187,6646.4%
65-6980,15086,602166,7525.7%
70-7464,10670,696134,8024.6%
75-7939,22547,14786,3722.9%
80-8424,24332,89557,1381.9%
85+21,98938,46060,4492.1%
How Kansas compares with similar-sized states, 2021
RankStateResidentsRelative
32 Nevada 3,148,472
33 Arkansas 3,027,127
34 Mississippi 2,947,603
35 Kansas 2,938,966
36 New Mexico 2,117,300
37 Nebraska 1,964,697
38 Idaho 1,904,855
Frequently asked questions about Kansas's population
What is the population of Kansas?
Kansas had an estimated 2,938,966 residents on July 1, 2021, according to the U.S. Census Bureau, Population Estimates Program. That ranks 35th among the 51 states and the District of Columbia.
What is the median age in Kansas?
The median age in Kansas was 37.6 years in 2021, the 41st oldest of the 51 states and DC. That is 1.3 years younger than the national median of 38.9.
How many people in Kansas are 65 or older?
About 505,513 residents of Kansas (17.2%) were 65 or older in 2021, against 19.7% under 15 and 63.1% aged 15 to 64.
What does the population pyramid of Kansas show?
In 2021, Kansas: children (19.7%) and older adults (17.2%) make up similar shares of the population. There were 99.1 men for every 100 women.
How fast is the population of Kansas changing?
The population of Kansas grew by 2.8% between 2010 and 2021, and by 0.0% in the last year.
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