2 US regions lead ranking of 2025 population growth: See full list

A new look at recent population changes in the United States shows a definite pattern in where people choose to live. All five states that top the leaderboard for population growth sit either in the South or the Rocky Mountains. 

By the numbers:

Between 2024 and 2025, the population of South Carolina ticked up by 1.46% and edged out Idaho by two-hundredths of a percentage point. The Palmetto State was joined by its Carolina neighbor to the north, which went up by 1.32%, according to new numbers from SmartAsset.

At the other end of the spectrum was Vermont, which had the largest year-to-year population drop, falling 0.29%. Only five states, including California, saw declines, the figures show. 

 

Dig deeper:

In addition to having the largest decline, Vermont had one of the highest median ages. In fact, the three oldest states on the financial services company’s list were in that northern tip of New England, with Maine having the grayest population and New Hampshire tying with Vermont for second place. 

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Utah had, by far, the youngest population on the list. Its median age of 33 was a full three years younger than any other state. Utah had the highest percentage of children under 5 at nearly 6.5%.

Why you should care:

While a growing number of residents have certain economic advantages, a declining one can also benefit the people living there. 

SmartAsset explained that more people means more potential workers and a larger consumer base, which can spur economic growth. The states where people are leaving, however, may see less pressure on housing and infrastructure, possibly improving affordability for those who remain.

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