Following the success of its 50 State Quarters program—deemed one of the most popular commemorative-coin programs in American history—the U.S. Mint announced its next ambitious project: releasing a unique penny for every county in the nation.

"Located in the first state in the union, Delaware's Kent County will be the first county honored in this grand celebration of America," U.S. Mint Director Henrietta Holsman Fore said Monday. "But over the coming years, citizens all across the nation will see the best aspects of their own counties celebrated on the obverse side of a penny. Collecting all 3,143 county pennies will be a fun activity your family will enjoy for generations."

Starting in 2006, the U.S. Mint will release five new pennies per year for the next 629 years.

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