Skip to main content

ISO Ratings of TN Fire Departments

Reference Number: MTAS-413
Reviewed Date: 10/28/2020


Of the 858 ISO-classified communities in Tennessee, 117, or 13.64 percent, are grade 9, as they meet only minimum standards.

The Tennessee ISO ratings are consistent with national ratings, as more than 14 percent of the fire districts in the United States have a Class 9 rating, which indicates the minimum recognized standard of fire protection.