Kodiak Island Borough is a borough in the U.S. state of Alaska. At the 2020 census, the population was 13,101, down from 13,592 in 2010. The borough seat is Kodiak.

Geography

The borough has a total area of 12022 sqmi, of which 6550 sqmi is land and 5472 sqmi (45.5%) is water. Most of the land area belongs to Kodiak Island, but a thin strip of coastal area on the western part of the Alaska Peninsula and other nearby islands (Afognak Island, Shuyak Island, Marmot Island, Raspberry Island, Little Raspberry Island, Whale Island, Spruce Island, Woody Island, Uganik Island, Sitkalidak Island, Tugidak Island, Sitkinak Island, Chirikof Island, and the Semidi Islands) are also in the borough. The waterway between the island and mainland is known as the Shelikof Strait. South of the island are the open waters of the Pacific Ocean, so the site is considered good for launching certain types of satellites. The Kodiak Launch Complex is ideal for putting satellites in Molniya and polar orbits.

Adjacent boroughs

National protected areas

Demographics

2000 census

As of the census of 2000, there were 13,913 people, 4,424 households, and 3,256 families residing in the borough. The population density was 2 /mi2. There were 5,159 housing units at an average density of 1 /mi2. The racial makeup of the borough was 59.69% White, 0.96% Black or African American, 14.58% Native American, 16.04% Asian, 0.79% Pacific Islander, 2.78% from other races, and 5.16% from two or more races. 6.10% of the population were Hispanic or Latino of any race. 13.10% reported speaking Tagalog at home, a language of the Philippines, while 5.28% speak Spanish. There were 4,424 households, out of which 45.90% had children under the age of 18 living with them, 59.70% were married couples living together, 8.80% had a female householder with no husband present, and 26.40% were non-families. 19.90% of all households were made up of individuals, and 3.70% had someone living alone who was 65 years of age or older. The average household size was 3.07 and the average family size was 3.52. In the borough the population was spread out, with 32.40% under the age of 18, 8.30% from 18 to 24, 34.00% from 25 to 44, 20.40% from 45 to 64, and 4.80% who were 65 years of age or older. The median age was 32 years. For every 100 females, there were 112.40 males. For every 100 females age 18 and over, there were 117.40 males.

Communities

Cities

Census-designated places

Government and politics

Kodiak Island Borough is strongly Republican, having last voted for a Democrat in 1964.