+ U.S. territories, and four Canadian provinces participating
pieces of licensure compact legislation enacted since 2015
States are a member to 43 interstate compacts on average
There are over 270 interstate compacts in existence
Similar to a contract, a compact establishes a formal, legal relationship among states to address common problems or promote a common agenda.
Compacts tackle an array of complex issues, from professional licensing and public safety to infrastructure and natural-resource management.
Across the country, more than 250 interstate compacts are active, with an average of about 25 collaborating on shared priorities.
The National Center for Interstate Compacts Database provides a comprehensive view of interstate compacts enacted by U.S. states and territories, Washington, D.C., and Canadian provinces.