Starting in 1999, the U.S. Mint began a years-long program where they released a specially designed quarter for all 50 states. It is widely lauded as the most successful coin program in the Mint's ...

The 11-year program, "the 50 State Quarter program," ran from 1999 to 2008, during which each state was given a specific quarter design. Most U.S. state quarters retain their original value of $0.25.