Green Bay, Wisconsin earned the trademarked nickname "Titletown, USA" because its NFL team, the Green Bay Packers, have won 13 league championships—more than any other franchise:
The name was popularized in the 1960s by coach Vince Lombardi and local media, officially trademarked in 2006. The city's identity is inseparable from the team—community-owned, non-profit, playing at Lambeau Field since 1957.