The Kodiak National Wildlife Refuge includes the southwestern two-thirds of Kodiak Island, Uganik Island, the Red Peaks area of Afognak Island and all of Ban Island in the archipelago. It encompasses 1,990,418 acres (8,054.94 km2).[2] The refuge is administered from offices in Kodiak.
The climate of the refuge is that of southern Alaska, mild and rainy. Many areas in the refuge are densely forested with Sitka spruce at lower elevations. There are grasslands in drier areas, shrub habitats dominated by dense alder, and alpine habitats at higher elevations. The refuge contains several small glaciers.
The refuge has no road access from the outside but contains part of a private road used for access to the Terror Lake hydroelectric facility. Public use of this road is prohibited.