Green Bay () is a city in the U.S. state of Wisconsin. The county seat of Brown County, it is at the head of Green Bay (known locally as "the bay of Green Bay"), a sub-basin of Lake Michigan, at the mouth of the Fox River. It is 581 feet (177 m) above sea level and 112 miles (180 km) north of Milwaukee. As of the U.S. Census Bureau's July 1, 2019 estimate, Green Bay had a population of 104,578, making it the third-largest in the state of Wisconsin, after Milwaukee and Madison, and the third-largest city on Lake Michigan, after Chicago and Milwaukee.Green Bay is the principal city of the Green Bay Metropolitan Statistical Area, which covers Brown, Kewaunee, and Oconto counties. Green Bay is well-known for being home of the Green Bay Packers of the National Football League.