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   2021  +1 +5

579,662 people lived in Wyoming on July 1, 2021: the 51st-largest population among the 50 states and the District of Columbia. The median age was 39.1 years (United States: 38.9); children (19.0%) and older adults (18.4%) make up similar shares of the population. There were 102.6 men for every 100 women. Since 2010 the population has grown by 2.7%. 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
579,662
Rank by population
51st of 51
Median age
39.1
Men per 100 women
102.6
Under 15
19.0%
15–64
62.6%
65 and over
18.4%
Child dependency
30.4
Old-age dependency
29.5
Change since 2010
+2.7%
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
0-416,63815,91132,5495.6%
5-919,31718,01037,3276.4%
10-1420,57719,74340,3207.0%
15-1920,52818,74539,2736.8%
20-2419,20817,64836,8566.4%
25-2917,45716,42233,8795.8%
30-3419,29618,39737,6936.5%
35-3920,10319,12939,2326.8%
40-4418,58917,73436,3236.3%
45-4916,35915,48431,8435.5%
50-5416,18315,65731,8405.5%
55-5917,33417,62334,9576.0%
60-6420,23720,48840,7257.0%
65-6919,00118,89237,8936.5%
70-7414,63714,76929,4065.1%
75-798,9789,21018,1883.1%
80-845,2856,06211,3472.0%
85+3,8416,17010,0111.7%
How Wyoming compares with similar-sized states, 2021
RankStateResidentsRelative
45 Delaware 1,005,130
46 South Dakota 896,303
47 North Dakota 777,977
48 Alaska 734,590
49 District of Columbia 669,637
50 Vermont 647,238
51 Wyoming 579,662
Frequently asked questions about Wyoming's population
What is the population of Wyoming?
Wyoming had an estimated 579,662 residents on July 1, 2021, 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 39.1 years in 2021, the 25th oldest of the 51 states and DC. That is 0.2 years older than the national median of 38.9.
How many people in Wyoming are 65 or older?
About 106,845 residents of Wyoming (18.4%) were 65 or older in 2021, against 19.0% under 15 and 62.6% aged 15 to 64.
What does the population pyramid of Wyoming show?
In 2021, Wyoming: children (19.0%) and older adults (18.4%) make up similar shares of the population. There were 102.6 men for every 100 women.
How fast is the population of Wyoming changing?
The population of Wyoming grew by 2.7% between 2010 and 2021, and by 0.3% in the last year.
More pyramids
All US states Population pyramid of the United States AlabamaAlaskaArizonaArkansasCaliforniaColoradoConnecticutDelawareDistrict of ColumbiaFloridaGeorgiaHawaiiIdahoIllinoisIndianaIowaKansasKentuckyLouisianaMaineMarylandMassachusettsMichiganMinnesotaMississippiMissouriMontanaNebraskaNevadaNew HampshireNew JerseyNew MexicoNew YorkNorth CarolinaNorth DakotaOhioOklahomaOregonPennsylvaniaRhode IslandSouth CarolinaSouth DakotaTennesseeTexasUtahVermontVirginiaWashingtonWest VirginiaWisconsin