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

Population of Wyoming, 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

588,753 people lived in Wyoming on July 1, 2025: the 51st-largest population among the 50 states and the District of Columbia. The median age was 40.2 years (United States: 39.4); more residents are 65 or older (20.7%) than under 15 (17.5%): an ageing, top-heavy pyramid. There were 102.8 men for every 100 women. Since 2010 the population has grown by 4.3%. 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
588,753
Rank by population
51st of 51
Median age
40.2
Men per 100 women
102.8
Under 15
17.5%
15–64
61.9%
65 and over
20.7%
Child dependency
28.2
Old-age dependency
33.4
Change since 2010
+4.3%
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
0-415,55415,05730,6115.2%
5-917,69816,72134,4195.8%
10-1419,48418,28937,7736.4%
15-1921,43819,70741,1457.0%
20-2420,94018,61939,5596.7%
25-2917,98216,82634,8085.9%
30-3418,35317,61635,9696.1%
35-3919,75218,58838,3406.5%
40-4420,08519,20639,2916.7%
45-4918,02117,08035,1016.0%
50-5416,27315,65431,9275.4%
55-5915,71215,74631,4585.3%
60-6418,03918,66536,7046.2%
65-6919,65319,80739,4606.7%
70-7416,69417,04033,7345.7%
75-7911,58711,98323,5704.0%
80-846,5767,24113,8172.3%
85+4,5506,51711,0671.9%
How Wyoming compares with similar-sized states, 2025
RankStateResidentsRelative
45 Delaware 1,059,952
46 South Dakota 935,094
47 North Dakota 799,358
48 Alaska 737,270
49 District of Columbia 693,645
50 Vermont 644,663
51 Wyoming 588,753
Frequently asked questions about Wyoming's population
What is the population of Wyoming?
Wyoming had an estimated 588,753 residents on July 1, 2025, according to the U.S. Census Bureau, Population Estimates Program. That ranks 51st among the 51 states and the District of Columbia.
What is the median age in Wyoming?
The median age in Wyoming was 40.2 years in 2025, the 17th oldest of the 51 states and DC. That is 0.8 years older than the national median of 39.4.
How many people in Wyoming are 65 or older?
About 121,648 residents of Wyoming (20.7%) were 65 or older in 2025, against 17.5% under 15 and 61.9% aged 15 to 64.
What does the population pyramid of Wyoming show?
In 2025, Wyoming: more residents are 65 or older (20.7%) than under 15 (17.5%): an ageing, top-heavy pyramid. There were 102.8 men for every 100 women.
How fast is the population of Wyoming changing?
The population of Wyoming grew by 4.3% between 2010 and 2025, and by 0.3% in the last year.
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