2020 census
As of the 2020 census, the county had a population of 13,101. The median age was 35.2 years. 24.6% of residents were under the age of 18 and 12.3% of residents were 65 years of age or older. For every 100 females there were 114.3 males, and for every 100 females age 18 and over there were 113.3 males age 18 and over. [11] [12]
The racial makeup of the county was 50.1% White, 0.7% Black or African American, 13.9% American Indian and Alaska Native, 21.4% Asian, 0.9% Native Hawaiian and Pacific Islander, 3.0% from some other race, and 10.0% from two or more races. Hispanic or Latino residents of any race comprised 7.8% of the population. [12]
72.7% of residents lived in urban areas, while 27.3% lived in rural areas. [13]
There were 4,612 households in the county, of which 37.2% had children under the age of 18 living with them and 21.6% had a female householder with no spouse or partner present. About 24.6% of all households were made up of individuals and 7.6% had someone living alone who was 65 years of age or older. [11]
There were 5,825 housing units, of which 20.8% were vacant. Among occupied housing units, 56.4% were owner-occupied and 43.6% were renter-occupied. The homeowner vacancy rate was 1.4% and the rental vacancy rate was 10.8%. [11]
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 people per square mile (0.77 people/km2). There were 5,159 housing units at an average density of 1 per square mile (0.39/km2). 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. [14]
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.
United States
Alaska 
