Who are the top 10 serving mayors in the us?

As of October 2023, the top 10 serving mayors in the U.S. by length of service include Ed Lee (San Francisco), who served from 2011 until his death in 2017, but his tenure is often recognized posthumously. Other notable long-serving mayors include Michael Bloomberg (New York City), who served three terms from 2002 to 2013, and Tom Menino (Boston), who served from 1993 to 2014. Current mayors with long tenures include Bill de Blasio (New York City) and London Breed (San Francisco), though the exact rankings can vary as new elections occur. For the most accurate and current list, it's best to consult a reliable source on U.S. municipal leadership.