The Green Bay metropolitan statistical area, as defined by the U.S. Office of Management and Budget, is a metropolitan area in northeastern Wisconsin anchored by the City of Green Bay. It is Wisconsin's fourth largest metropolitan statistical area by population. As of the 2020 census, the MSA had a combined population of 328,268. The MSA is a component of the broader Green Bay–Shawano, WI Combined Statistical Area, which also includes the Shawano, WI micropolitan area. The CSA had a total population of 373,404 at the 2020 census.