The singer-songwriter married his fiancee, Kate Lee, Saturday at his mansion on Long Island, New York.
Joel, 55, wed Lee, 23, in a sunset ceremony at his waterfront home in Oyster Bay, according to Newsday.com.
Columbia Records announced the marriage Saturday night.
Lee, who is from Huntington, West Virginia, is a recent graduate of Miami University of Ohio and works as a restaurant correspondent for the PBS show "George Hirsch: Living It Up!" She and Joel began dating last year, according to Newsday.
This is the third marriage for Joel, who was married to his then-business manager Elizabeth Weber from 1971 to 1982, and from 1985 to 1994 was married to supermodel Christie Brinkley, the mother of his 18-year-old daughter, Alexa.
The nuptials came just two weeks after another happy event for Joel - receiving a star on the Hollywood Walk of Fame. The star is on Hollywood Boulevard, in front of the Pantages Theatre, where the Tony Award-winning musical based on his songs, "Movin' Out," is playing through Oct. 31.
Joel is a member of the Rock and Roll Hall of Fame and has had more than two dozen Top 10 hits, including "Just The Way You Are," "Uptown Girl," "Still Rock And Roll To Me," "An Innocent Man" and his signature song "Piano Man," which was released in 1973 and became a hit the next year.
This month Joel marked another personal milestone: the publication of his first children's book, a picture book entitled "Lullaby: Goodnight My Angel," based on a song he wrote for his daughter when she was a child.
He plans to follow up next year with a second children's book, to be based on his hit song "New York State of Mind."