Cataldo is an unincorporated community in Kootenai and Shoshone counties in northern Idaho. It is located at an altitude of 2,139 feet (652 m). Cataldo lies on the southeast banks of the Coeur d'Alene River and Interstate 90 passes the south side of the community. The community of Kingston lies along I-90 to the east. The ZIP Code for Cataldo is 83810.

Kootenai County is located in the U.S. state of Idaho. As of the 2020 census, its population was 171,362, making it the third-most populous county in Idaho and by far the largest in North Idaho, the county accounting for 45.4% of the region's total population. The county seat and largest city is Coeur d'Alene. The county was established in 1864 and named after the Kootenai tribe.