Milwaukee County    County Clerk    County Treasurer    Milwaukee Visitors Bureau    City of Milwaukee    Metro Milwaukee Association of Commerce    Granville (annexed to Milwaukee)    Granville Chamber of Commerce WSOR serves Milwaukee County from the west via the Horicon Terminal, or from the North Milwaukee yards. Milwaukee County is located in southeastern Wisconsin on the shores of Lake Michigan. WSOR runs through the northwestern section of the county. Communities served in Milwaukee County include: Granville and North Milwaukee.