The total population of Hollenberg is estimated to be 19 with 13 males (68.42%) and 6 females (31.58%). There are 7 less females than males in Hollenberg.
In 2022, the population of Hollenberg was 13, a 0.00% decrease year-by-year from 2021. Previously, in 2021, Hollenberg's population was 13, a decline of 0.00% compared to a population of 13 in 2020.
The median age in Hollenberg, KS is 63.4, as per 2021 ACS 5-Year Estimates. Of the total population, 0.00% were under the age of 15, 0.00% aged 15 to 29, 77.78% aged 30 to 64, 22.22% aged 65 to 84, and 0.00% were 85 years of age and older.