Bangor (locally: ) is a city in and the county seat of Penobscot County in the U.S. state of Maine, and the major commercial and cultural center for eastern and northern Maine. The population of the city was 33,039 at the 2010 United States Census. Bangor is the principal city of the Bangor Metropolitan Statistical Area, which has a population of 153,923, and encompasses all of Penobscot County.
As of 2008, Bangor is the third most populous city in Maine, as it has been for more than a century. Bangor is the largest market town, distribution center, transportation hub, and media center in a five-county area whose population tops 330,000 and which includes Penobscot, Piscataquis, Hancock, Aroostook, and Washington counties.
Bangor is about thirty miles from Penobscot Bay up the Penobscot River at its confluence with the Kenduskeag Stream. It is connected by bridge to the neighboring city of Brewer. Its immediate suburban towns are Orono (home of the University of Maine campus), Hampden, Hermon, Old Town, Glenburn, and Veazie.