| Circular Number | Circular Title | Summary | State(s) |
| CC-AA-2026-005 | COMMUNITY MITIGATION CLASSIFICATION CHANGES EFFECTIVE SEPTEMBER 1, 2026 | ISO provides the changes in community public fire protection and building code effectiveness classifications for the listed jurisdictions. The changes are applicable to all policies written on or after September 1, 2026. | AK, AL, AR, AZ, CA, CO, CT, FL, GA, IA, IL, IN, KS, KY, MD, ME, MI, MN, MO, NC, ND, NE, NH, NJ, NM, NY, OH, OK, OR, PA, SC, SD, TN, TX, UT, VA, VT, WI, WV, WY |

