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.