Which live-action sitcom has aired the most episodes?

The Adventures of Ozzie and Harriet holds the record for the most episodes of any live-action sitcom, with an astonishing 435 episodes broadcast from 1952 to 1966. Starring the real-life Nelson family—Ozzie, Harriet, David, and Ricky Nelson—the series was adapted from a successful radio show and became one of television's defining family comedies. Although newer sitcoms such as Although sitcoms such as The Simpsons have produced far more episodes, The Adventures of Ozzie and Harriet still holds the record among live-action sitcoms.