Location of Kwigillingok, Alaska
|• Total||20.2 sq mi (52.4 km2)|
|• Land||20.1 sq mi (52.2 km2)|
|• Water||0.1 sq mi (0.2 km2)|
|• Density||16/sq mi (6.1/km2)|
|Time zone||Alaska (AKST) (UTC-9)|
|• Summer (DST)||AKDT (UTC-8)|
Kwigillingok is located at .
According to the United States Census Bureau, the CDP has a total area of 20.2 square miles (52 km2), of which, 20.1 square miles (52 km2) of it is land and 0.1 square miles (0.26 km2) of it (0.35%) is water.
As of the census of 2000, there were 388 people, 96 households, and 89 families residing in the CDP. The population density was 16.8 people per square mile (6.5/km²). There were 78 housing units at an average density of 3.9/sq mi (1.5/km²). The racial makeup of the CDP was 2.07% White, 97.63% Native American, and 0.30% from two or more races.
There were 96 households out of which 60.3% had children under the age of 18 living with them, 74.0% were married couples living together, 8.2% had a female householder with no husband present, and 9.6% were non-families. 6.8% of all households were made up of individuals and none had someone living alone who was 65 years of age or older. The average household size was 4.63 and the average family size was 4.89.
In the CDP the population was spread out with 39.9% under the age of 18, 8.9% from 18 to 24, 29.9% from 25 to 44, 14.2% from 45 to 64, and 7.1% who were 65 years of age or older. The median age was 26 years. For every 100 females there were 131.5 males. For every 100 females age 18 and over, there were 128.1 males.
The median income for a household in the CDP was $36,250, and the median income for a family was $33,250. Males had a median income of $23,125 versus $50,625 for females. The per capita income for the CDP was $7,577. About 28.8% of families and 34.7% of the population were below the poverty line, including 46.8% of those under age 18 and none of those age 65 or over.