US 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.
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Select layout for the user interface:

Default

wide layout with map on the top and tools below

Simple ⚡

simplified layout with map on the right and tools on the left

Simple - Reversed ⚡

simplified layout with map on the left and tools on the right

Your selection will be saved for your next visits to this map page. You can always change this back.

CONTROLS

mouse wheel : Zoom in/out

mouse wheel : Move Map

You can also use W,A,S,D,I,O on your keyboard or the controls on the right.

You can still switch colors, click on states to paint them, etc.


Step 1: Coloring/Editing the Map

Select the color you want and click on a state on the map. Right-click on it to remove its color, hide it, and more. Advanced...

More Options

Step 2: Choosing the Legend

Add the title you want 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 customize its color, font, and more.

or
Color Label Remove
Step 3: Getting the Map

When ready, select Preview Map. To download the map: Right click > Save image as... or select Download Map.

If you want to change something, select Edit. To start over, select Clear All.

Download Map
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