Note 7 — Chapter II · THE PEOPLE, RACES, AND RACIAL PROBLEMS OF THE UNITED STATES
Reading edition
The following table shows the increase, by decades, in round figures:
1790— 3,900,000 1840— 17,000,000 1890— 62,900,000
1800— 5,300,000 1850— 23,100,000 1900— 75,900,000
1810— 7,200,000 1860— 31,400,000 1910— 91,900,000
1820— 9,600,000 1870— 38,500,000 1920—105,000,000
1830— 12,800,000 1880— 50,000,000
From this it will be seen that the ratio of increase is declining. The population increased about one-third in each decade from 1790 to 1860; by about one-fourth in each decade from 1860 to 1890; by about one-fifth in the two decades from 1890 to 1910; and by less than one-sixth in the decade from 1910 to 1920.