County fire service is divided among fourteen fire stations throughout the rural areas of Williamson County. Some stations are grouped under a single non-profit fire organization, while other non-profit organizations are responsible for only one station.

Each district is graded by ISO (Insurance Services Organization) which is a group owned organization by a collective of various Insurance Corporations. ISO provides a non-biased grade on the delivery of fire protection to a given area, thereby providing a scale for home owner’s insurance ratings. The scale is called a Public Protection Class (PPC) and is graded 1-10; 1 signifying the very best fire protection availability during the grading period.