Image by Annie Spratt

Index Updates

The Federalism Index is always improving. Here is a list of the most recent improvements to our federalism data. *Updated February 1, 2021


Newly designed interactive storyboards will help us reach more teachers and also help legislators get the information they need, efficiently, to make informed policy decisions.


Carefully crafted ranged "bands" help users spot trends across decades or important eras and periods.


Functional timelines to stimulate discussion and provide context for understanding the ways in which the U.S. Federal system has evolved over time.

Drill Down

Added drill down features help spark conversation and research by letting users arrange the data in the way that makes most sense for their needs.

Custom Annotations

Custom annotations point user's attention to relevant dates, events, or turning points in the development of American federalism.

Have a feature you would like added? Let us know at

The Federalism Index 2.0 is going live.


Please help us improve this version of the Federalism Index by emailing