Brookside is an unincorporated community located in the town of Pensaukee, Oconto County, Wisconsin, United States. Brookside is located on County Highway J near U.S. Route 41, southwest of Oconto. Brookside was named from its location at a brook. Notable people Wally Ladrow, football player References Unincorporated communities in Oconto County, Wisconsin Unincorporated communities in Wisconsin Green Bay metropolitan area