ISO - Insurance Services Office Rating

Insurance Services Office (ISO) Rating for San Marcos

ISO stands for Insurance Services Office (ISO). A rating schedule was developed by the Insurance Services Office (ISO). This rating schedule serves insurance companies that cover property and casualty benefits for their clients. ISO representatives use the schedule when surveying a community's fire protection capabilities. The ISO scores fire departments on how they are doing against its organization's standards to determine property insurance costs.ISO rating system is from 1 (the best) to 10 (the worst). 

The official City of San Marcos - SMFD ISO LETTER is available for download for your insurance documentation. 


ISO rating for San Marcos is 2 - 9.

The ISO rating for San Marcos is 2 in most all areas of the San Marcos City Limits. 

An ISO rating of 9-10 applies to a few areas in the outskirts of the San Marcos City Limits.  All class-rated properties located farther than 5 miles of a fire station will use Class 10. 

To verify a San Marcos Address:  Use "Address Look Up" to verify if an address is in the San Marcos City Limits 





SMFD Stations 1-6 Service Areas


San Marcos Fire Department Locations

  • Fire Station 1, 114 E. Hutchison St.
  • Fire Station 2, 205 Flint Ridge Rd. 
  • Fire Station 3, 2420 Hunter Rd. 
  • Fire Station 4, 1404 Wonder World Dr.
  • Fire Station 5, 100 Carlson Circle
  • Fire Station 6, 5716 S Old Bastrop Highway (Opening Fall 2022)


To learn more about ISO see the Texas Department of Insurance Website or Texas Addendum to the Fire Suppression Rating Schedule (PDF).