In 2022, the population of Nikolai was 86, a 2.27% decrease year-by-year from 2021. Previously, in 2021, Nikolai's population was 88, an increase of 4.76% compared to a population of 84 in 2020.
The median age in Nikolai, AK is 36.7, as per 2021 ACS 5-Year Estimates. Of the total population, 9.62% were under the age of 15, 13.46% aged 15 to 29, 67.31% aged 30 to 64, 6.73% aged 65 to 84, and 2.88% were 85 years of age and older.
Racial distribution of Nikolai population: 3.85% are White, 1.92% are Black or African American, 61.54% are American Indian and Alaska Native, 5.77% are some other race and 26.92% are multiracial.