Immediately after his retirement as a player, he served as an assistant coach (quarterbacks) in 1972, when the Packers won the NFC Central division title at 10-4. Starr became head coach of the Packers three years later, in 1975. His regular season record was a disappointing 52-76-2 (.408), with a playoff record of 1-1. Posting a 5-3-1 record in the strike-shortened season of 1982, Starr's Packers made their first playoff appearance in ten years (and their last for another 11 years). They defeated the St. Louis Cardinals 41-16 in the expanded wildcard round of 16 teams on January 8, 1983, then lost to the Dallas Cowboys 37-26 in the divisional round the following week. After a disappointing 8-8 finish the following year, Starr was dismissed in favor of his former teammate, Forrest Gregg.
Starr is now chairman of Healthcare Realty Services.
In 1965, he and Cherry helped co-found Rawhide Boys Ranch, New London, WI, a facility designed to help at-risk troubled boys throughout the state a reality, and is affiliated with it yet to this day.
In 1999, he was ranked number 41 on The Sporting News' list of the 100 Greatest Football Players.
Starr is one of five Green Bay Packers to have his number (15) retired by the team. The others are Tony Canadeo (3), Don Hutson (14), Ray Nitschke (66), and Reggie White (92). Of the five, only Starr is still living.
Starr has an NFL award named after him. The Bart Starr Award is given, by a panel of judges, to the best Christian player in the NFL.
Starr is an avid backgammon player, often playing under the name "NorthStar12".
Starr recently spoke at the Baylor School in Chattanooga, TN along with fellow friend Bill Curry.
In 1997, an episode of the animated television series The Simpsons was titled Bart Star. In the episode, Bart Simpson is elevated to the team's starting quarterback by his father and team's new coach, Homer, replacing Nelson Muntz. Joe Namath, who won the Super Bowl MVP award in Super Bowl III after Starr won the award in the first two games, and like Starr is a University of Alabama alumnus, appeared as himself in the episode.