235 Years of American Settlement

Drag the year to watch the frontier cross the Mississippi, the Great Plains fill by 1890, and then empty again through the mid-twentieth century. Click any county to pin its full 235-year trajectory.

Census Year 1790 U.S. population · 3,929,214
Drag the year to beginor use ← → keys
0
5,000 per sq mi
Loading 235 years of census data…
Unable to load the US county atlas.
Check your network connection and refresh the page.
Enjoy this tool? Build your own with Super