| Date (Years AD) |
Population (millions) |
Date (Years AD) |
Population (millions) |
|
| 1790 | 3.929 | 1900 | 75.996 | |
| 1800 | 5.308 | 1910 | 91.972 | |
| 1810 | 7.240 | 1920 | 105.711 | |
| 1820 | 9.638 | 1930 | 122.775 | |
| 1830 | 12.866 | 1940 | 131.669 | |
| 1840 | 17.069 | 1950 | 150.697 | |
| 1850 | 23.192 | 1960 | 179.323 | |
| 1860 | 31.443 | 1970 | 203.185 | |
| 1870 | 38.558 | 1980 | 226.546 | |
| 1880 | 50.156 | 1990 | 248.710 | |
| 1890 | 62.948 | 2000 | 281.422 |