2020 census
As of the 2020 census, Kake had a population of 543. The median age was 35.4 years. 28.5% of residents were under the age of 18 and 16.8% of residents were 65 years of age or older. For every 100 females there were 116.3 males, and for every 100 females age 18 and over there were 128.2 males age 18 and over.[8][9]
0.0% of residents lived in urban areas, while 100.0% lived in rural areas.[10]
There were 188 households in Kake, of which 43.6% had children under the age of 18 living in them. Of all households, 42.0% were married-couple households, 26.1% were households with a male householder and no spouse or partner present, and 20.2% were households with a female householder and no spouse or partner present. About 23.4% of all households were made up of individuals and 9.6% had someone living alone who was 65 years of age or older.[8]
There were 222 housing units, of which 15.3% were vacant. The homeowner vacancy rate was 0.8% and the rental vacancy rate was 22.0%.[8]
2000 census
As of the census[11] of 2000, there were 710 people, 246 households, and 171 families residing in the city. The population density was 87.0 inhabitants per square mile (33.6/km2). There were 288 housing units at an average density of 35.3 per square mile (13.6/km2). The racial makeup of the city was 24.08% White, 0.28% Black or African American, 66.76% Native American, 0.28% Asian, 0.56% from other races, and 8.03% from two or more races. 1.55% of the population were Hispanic or Latino of any race.
There were 246 households, out of which 41.1% had children under the age of 18 living with them, 52.0% were married couples living together, 13.4% had a female householder with no husband present, and 30.1% were non-families. 24.8% of all households were made up of individuals, and 6.9% had someone living alone who was 65 years of age or older. The average household size was 2.88 and the average family size was 3.49.
In the city the population was spread out, with 33.8% under the age of 18, 6.8% from 18 to 24, 29.7% from 25 to 44, 22.7% from 45 to 64, and 7.0% who were 65 years of age or older. The median age was 32 years. For every 100 females, there were 113.2 males. For every 100 females age 18 and over, there were 112.7 males.
The median income for a household in the city was $39,643, and the median income for a family was $42,857. Males had a median income of $44,167 versus $20,625 for females. The per capita income for the city was $17,411. About 13.2% of families and 14.6% of the population were below the poverty line, including 23.7% of those under the age of 18 and 4.0% of those 65 and older.