GO OUTDOOR. GO DIGITAL. Lamar Advertising is the nation's leading outdoor advertising firm.  Our local Green Bay office services six markets to include Green Bay, Appleton, Oshkosh, Fond du Lac, Manitowoc and Marinette.  Our large portfolio of inventory and impressive number of outdoor options allows us the opportunity to partner with area businesses and deliver their message to a captive audience.  With over 500 bulletin faces, 600 poster faces and 25 digital displays, we are sure to have something to help your business grow!