Terms of the deal were not disclosed.
"We are very pleased to finalize this agreement with Mike," Packers general manager Ted Thompson said in a statement. "He's a good football coach, a good leader, and a good man. I look forward to working with Mike into the future."
McCarthy's previous contract ran through 2012, and both he and Thompson had been locked up for five years when they signed previous extensions after the 2007 season.
Thompson received his new multiyear extension on Feb. 11, meaning it was only a matter of time before his hand-picked coach received a new deal, too.
"We were very excited to bring the Lombardi Trophy back home this past season, and we look forward to the challenge of continuing to improve as a football team and adding to the championship legacy here," McCarthy said in a statement. "My family and I love being in Green Bay. It's always going to be my home, and we are very happy to continue to be a part of this community."
In his final press conference in Green Bay last month, McCarthy said he wasn't going to be naive that his life would change after the title. He'll already join Lombardi and Holmgren with his name on a street near Lambeau Field when next season begins.
"I'm a family man, and I'm a football coach. I live in a town, the town of Green Bay, I feel respects that, and I hope it doesn't change. I'm very comfortable here," McCarthy said at the time. "You worry about your family more. I don't worry about myself. You just worry about if the change is really going to affect your immediate family. That's the only concern that I have, and I don't see that being an issue here in Green Bay."
His no nonsense attitude and wry sense of humor that endeared him to the modest, Midwestern town from the start. Along the way, he restored the city's nickname of Titletown after a 14-year drought -- and he hopes that doesn't change, along with anything else.
"I still go to Starbucks every morning," McCarthy said last month. "Got a cup with 'congratulations.' ... That was nice. But other than that, they still charged me. So everything's staying the same."
Copyright 2011 by The Associated Press