Census data: Wyoming sees swift increase in elderly population

The elderly population (age 65 and over) in the state grew 2.9% between July 2024 and July 2025, according to U.S. Census Bureau estimates.

In comparison, Wyoming’s total population only grew 0.3% during the year. The median age (half of the population is younger, and the other half older) rose 0.3 to 40.2 years, while it increased from 39.2 to 39.4 in the U.S. from 2024 to 2025. 

The new data indicate that the aging of Wyoming’s population continued to be speedy, and the pace since 2020 was the most rapid in the country.

“The primary reason was the impact of aging baby boomers (born between 1946 and 1964), but the decline in the fertility rate also contributed to the situation,” said Wenlin Liu, chief economist with the state of Wyoming, Economic Analysis Division. 

Since the initial baby boomer cohort reached the age of 65 in 2011, there has been a precipitous increase in the size of the older population. With the quick aging, Wyoming’s median age increased to the 17th highest compared to other states in 2025 and eclipsed all neighboring states except Montana.

Wyoming has one of the highest proportions of the baby boom population (age 61-79 in 2025) and one of the lowest proportions of Generation X (age 45 to 60 in 2025) in the country. For example, the number of residents aged 50-59 was 12,800 (or 16.8%) less than the age 60-69 group.

Wyoming’s population age 65 and older increased from 101,843 in 2020 to 121,648 in 2025, or 19.4%, while the population under age 18 decreased by 6% during the same period.