Dubbed the "Incredible County" by its residents, Warren County, Ohio between Dayton and Cincinnati is one of the fastest-growing counties in the nation. With a population of 189,276, the county covers 408.9 square miles including both suburban and rural communities. More than 10 years ago, the county developed a Geographic Information System (GIS) from its paper parcel base maps. Populated with mapping-grade accurate data, the GIS developed in ESRI (Redlands, Calif.) ArcINFO was cutting-edge and sufficient for that time. However, it provided no utility information--crucial information every county needs.