Population and Social Characteristics
This State's Population Is Vanishing Before Our Eyes

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24/7 Wall St. Insights
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In terms of population, the smallest state in the U.S. is Wyoming, home to roughly 580,000 people. Wyoming has been the least populous state for decades, stealing the title from Alaska in the 1990 census. Wyoming’s small population is due to several factors, such as harsh climate, economic infrastructure, and geographical layout. Historical factors are also at play: when Americans began migrating west, Wyoming was viewed as a transitional area of sorts. Plenty moved through the region, but not many stuck around. Though it has seen a steady increase in population over the decades, this rugged Midwest state still continues to win the smallest-state award.
Which state will have the smallest population about 15 years from now will depend on a series of factors, including things like migration patterns and birth numbers. Since 2010, Vermont has failed to bring in enough new residents to offset the number of people moving to other states. Census data reveals more people die in Vermont than are born there. Additionally, children under 15 make up a very small share of the state’s population, smaller than in any other U.S. state. A quarter of Vermont residents will be 65 or older by the year 2030. For these reasons, Vermont is predicted to steal the ‘tiniest population’ crown from Wyoming by 2040.
To better understand future trends, 24/7 Wall St. identified the state that will be America’s smallest in 2040. To get our data, we reviewed the National Population Projections, published by the Demographics Research Group at the University of Virginia Weldon Cooper Center for Public Services. We’ve included every state and the District of Columbia, ranked by projected 2040 population from largest to smallest. Furthermore, we included supplemental information about each state, such as gross domestic product in current U.S. dollars (per the Bureau of Economic Analysis), seasonally adjusted unemployment rate figures (per the Bureau of Labor Statistics), and median home values from the Census Bureau 2022 American Community Survey.
Though there are currently six states with population totals under one million today, by 2040 this number will dwindle to only three. Experts say that by 2040, neither Vermont, Wyoming, nor Alaska’s populations will reach over one million.
Population changes affect a state’s tax revenue, housing market, economy, and workforce. When a population shifts, the need for healthcare, education, and other public services also shifts. By looking at the trends on a state-by-state basis, we can begin to understand which states are luring in more residents, and which states are driving them away.
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