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

Population of Missouri, 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

6,270,541 people lived in Missouri on July 1, 2025: the 18th-largest population among the 50 states and the District of Columbia. The median age was 39.6 years (United States: 39.4); more residents are 65 or older (19.6%) than under 15 (17.8%): an ageing, top-heavy pyramid. There were 96.3 men for every 100 women. Since 2010 the population has grown by 4.6%. 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
6,270,541
Rank by population
18th of 51
Median age
39.6
Men per 100 women
96.3
Under 15
17.8%
15–64
62.6%
65 and over
19.6%
Child dependency
28.4
Old-age dependency
31.3
Change since 2010
+4.6%
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
0-4177,044169,373346,4175.5%
5-9192,999183,750376,7496.0%
10-14200,202190,698390,9006.2%
15-19209,396199,612409,0086.5%
20-24217,425206,450423,8756.8%
25-29206,760202,975409,7356.5%
30-34202,796203,028405,8246.5%
35-39202,200204,905407,1056.5%
40-44197,584201,086398,6706.4%
45-49179,839184,326364,1655.8%
50-54171,561176,543348,1045.6%
55-59174,604182,845357,4495.7%
60-64193,676208,730402,4066.4%
65-69182,134204,368386,5026.2%
70-74146,970171,397318,3675.1%
75-79108,161133,465241,6263.9%
80-8464,07686,309150,3852.4%
85+49,49483,760133,2542.1%
How Missouri compares with similar-sized states, 2025
RankStateResidentsRelative
15 Tennessee 7,315,076
16 Massachusetts 7,154,084
17 Indiana 6,973,333
18 Missouri 6,270,541
19 Maryland 6,265,347
20 Colorado 6,012,561
21 Wisconsin 5,972,787
Frequently asked questions about Missouri's population
What is the population of Missouri?
Missouri had an estimated 6,270,541 residents on July 1, 2025, according to the U.S. Census Bureau, Population Estimates Program. That ranks 18th among the 51 states and the District of Columbia.
What is the median age in Missouri?
The median age in Missouri was 39.6 years in 2025, the 26th oldest of the 51 states and DC. That is 0.2 years older than the national median of 39.4.
How many people in Missouri are 65 or older?
About 1,230,134 residents of Missouri (19.6%) were 65 or older in 2025, against 17.8% under 15 and 62.6% aged 15 to 64.
What does the population pyramid of Missouri show?
In 2025, Missouri: more residents are 65 or older (19.6%) than under 15 (17.8%): an ageing, top-heavy pyramid. There were 96.3 men for every 100 women.
How fast is the population of Missouri changing?
The population of Missouri grew by 4.6% between 2010 and 2025, and by 0.4% in the last year.
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