🇺🇸 United States historical map
This map attempts to show all border changes for US States from 1790 to today.
- The changing boundaries are represented with a "lifetime" for each State, i.e. a start and end year.
- To make sure that each states's changing borders are shown only once, the state of the borders at the end of each year (31/12/XXXX) is used.
- For example, Oklahoma State was admitted on November 16, 1907 and consequently was already a state at the end of 1907, so the previous entities (Indian Territory and Oklahoma Territory) have an end date of 1906.
- The map currently changes with a leap of 10 years, but more dates will be available in time.
- Check the accompanying blog post for more info.
Your choices will be saved for your next visits to this map page.
Zoom activated
Select the color you want and click on a state on the map. Right-click to remove its color, hide, and more.
Add a title for the map's legend and choose a label for each color group. Change the color for all states in a group by clicking on it.
Drag the legend on the map to set its position or resize it. Use legend options to change its color, font, and more.
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