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. As of the 2020 Census, Green Bay had a population of 107,395, making it the third-most populous city in Wisconsin, after Milwaukee and Madison, and the third-largest city on Lake Michigan, after Chicago and Milwaukee.
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