Fond du Lac County    County Clerk    County Treasurer    Economic Development Corp.    City of Ripon    Ripon Area Chamber of Commerce    Village of Brandon    City of Waupun    Waupun Area Chamber of Commerce    Fond du Lac Assoc. of Commerce WSOR serves Fond du Lac County from its Horicon Terminal which is located to the south of the county. Fond du Lac County is located in southeast Wisconsin north of Dodge County. The WSOR railroad runs through the western section of the county. Communities served include: Ripon, Brandon, and Waupun.