In 2022, the population of Whalan was 70, a 4.48% increase year-by-year from 2021. Previously, in 2021, Whalan's population was 67, an increase of 1.52% compared to a population of 66 in 2020.
The median age in Whalan, MN is 55.5, as per 2021 ACS 5-Year Estimates. Of the total population, 12.77% were under the age of 15, 6.38% aged 15 to 29, 44.68% aged 30 to 64, 25.53% aged 65 to 84, and 10.64% were 85 years of age and older.