https://www.iccsafe.org/wp-content/uploads/fact-sheet.pdf

"All 50 states and the District of Columbia have adopted the I-Codes at the state or jurisdictional level. Many federal agencies, Guam, Puerto Rico and the U.S. Virgin Islands use or reference the I-Codes. Outside of the U.S., the I-Codes are the basis for the Abu Dhabi International Building Codes, the regional Caribbean Building Standard, the Mexico Residential Building Code, the Haitian National Code, the Honduras Building Code, Jamaica’s construction codes, Georgia’s building safety codes and the Saudi Building Code."