The share of Americans living in the South is the largest of any region and growing: Share of U.S. population by region, 1910 to 2020.

South Northeast Midwest West
1910 31.9% 28.0% 32.4% 7.7%
1920 31.2% 28.0% 32.1% 8.7%
1930 30.7% 27.9% 31.3% 10.0%
1940 31.5% 27.2% 30.4% 10.9%
1950 31.2% 26.1% 29.4% 13.3%
1960 30.7% 24.9% 28.8% 15.6%
1970 30.9% 24.1% 27.8% 17.1%
1980 33.3% 21.7% 26.0% 19.1%
1990 34.4% 20.4% 24.0% 21.2%
2000 35.6% 19.0% 22.9% 22.5%
2010 37.1% 17.9% 21.7% 23.3%
2020 38.1% 17.4% 20.8% 23.7%

Source: Author's analysis of U.S Census Bureau’s Historical Population Change Data.

View the underlying data on epi.org.