The last pennies were struck at the mint in Philadelphia, where the country's smallest denomination coins have been produced since 1793.
There are an estimated 114 billion pennies currently in circulation, but they are "severely underutilized," according to the Treasury Department.
The Philadelphia Mint on Independence Mall is one of three places in the country that produces pennies.
The U.S. Treasury Department says it will phase out production of new pennies early next year after President Donald Trump asked the agency to stop producing the coin that has been part of the American currency for more than 230 years.
An American silver coin dating back to the 17th century, before the United States was founded, has sold for a record-breaking $2.52 million at auction.