Center of Population, 1700–1910
A map from 1913 showing the mean center of population of the United States, calculated at each census from 1790 to 1910. The map illustrates the westward expansion of territory and migration during the period. The median point, that is, the point tha...

American Population, 1790
A map of the original thirteen States in 1790 showing the distribution of the European–American population at the time and the general tribal lands of the Native Americans east of the Mississippi River. The map shows the State lines, rivers, an...

Distribution of Population, 1790
A map of the original thirteen States in 1790 showing State lines, territories northwest and south of the Ohio River, British and Spanish possessions, and the distribution of the European–American population east of the Mississippi River at the...

Population Density from the First Census, 1790
A map of the eastern United States in 1790 showing the western extent of the territories to the Mississippi, and the distribution of European–American population at the time. The map is keyed to show areas of population densities ranging from u...

Center of U.S. Population, 1790–1880
The theoretical position of the mean center of population in the United States at the close of each census decade from 1790—1880....

Center of population, 1790–1900
A map from 1919 showing the mean center of population of the United States, calculated at each census from 1790 to 1900. The map illustrates the westward expansion of territory and migration during the period. "The center of population moved a g...

The Center of Population in the United States, 1790–1900
Shows dates that states of Indiana, Maryland, Ohio, Pennsylvania, Washington D.C., and West Virginia were admitted to the Union. ...

The Center of Population in the United States, 1790–1900
A map from 1904 of the eastern United States showing the westward progression of the centers of population from 1790 to 1900. "The centre of population is defined as ‘the point at which equilibrium would be reached were the country taken a...

Movement of the Center of Population, 1790–1910
A map from 1921 showing "the center of population moving westward with varying degrees of rapidity, as indicated by the stars from 1790 to 1910." — Foster, 1921....

Movement of the Center of Population, 1790–1920
A map from 1920 of the eastern United States showing the westward progression of the centers of population from 1790 to 1920....