2020 census As of the
2020 census, Oologah had a population of 1,305. The median age was 34.2 years. 29.0% of residents were under the age of 18 and 11.7% of residents were 65 years of age or older. For every 100 females there were 94.5 males, and for every 100 females age 18 and over there were 87.3 males age 18 and over. There were 498 households in Oologah, of which 42.0% had children under the age of 18 living in them. Of all households, 47.8% were married-couple households, 15.9% were households with a male householder and no spouse or partner present, and 29.9% were households with a female householder and no spouse or partner present. About 24.3% of all households were made up of individuals and 8.2% had someone living alone who was 65 years of age or older. There were 541 housing units, of which 7.9% were vacant. The homeowner vacancy rate was 4.9% and the rental vacancy rate was 0.6%.
2000 census As of the 2000 census, there were 342 households, out of which 42.1% had children under the age of 18 living with them, 52.0% were
married couples living together, 18.4% had a female householder with no husband present, and 24.3% were non-families. 22.5% of all households were made up of individuals, and 9.6% had someone living alone who was 65 years of age or older. The average household size was 2.58 and the average family size was 3.03. In the town, the population was spread out, with 31.6% under the age of 18, 8.6% from 18 to 24, 27.7% from 25 to 44, 22.1% from 45 to 64, and 10.0% who were 65 years of age or older. The median age was 33 years. For every 100 females, there were 89.9 males. For every 100 females age 18 and over, there were 84.1 males. The median income for a household in the town was $33,977, and the median income for a family was $40,625. Males had a median income of $37,500 versus $25,000 for females. The
per capita income for the town was $16,493. About 7.5% of families and 9.8% of the population were below the
poverty line, including 14.7% of those under age 18 and 6.9% of those age 65 or over. ==Education==