- It is the largest island of the Kodiak Archipelago and the second-largest island in the United States by area, after the Big Island of Hawaii.
- Kodiak Island is located approximately 250 miles (400 km) southwest of Anchorage, the state's largest city.
- The island is about 100 miles (160 km) long and 60 miles (97 km) wide, with a total area of 3,588 square miles (9,293 km²).
- The population of Kodiak Island was estimated to be 13,914 in 2021, with the majority living in the city of Kodiak.