According to our records, this business is located at P.O. BOX 3710 in Honolulu (in Honolulu County), Hawaii 96811, the location GPS coordinates are: 21.3069444 (latitude), -157.8583333 (longitude). National Interstate Insur Co is categorized under Property Insurance and Casualty Insurance (SIC code 6331). Known organization general manager is John Woods. You can contact the company by phone at (808) 536-3366.