In 2022, the population of Zenda was 68, a 1.45% decrease year-by-year from 2021. Previously, in 2021, Zenda's population was 69, a decline of 2.82% compared to a population of 71 in 2020.
The median age in Zenda, KS is 67.1, as per 2021 ACS 5-Year Estimates. Of the total population, 17.54% were under the age of 15, 3.51% aged 15 to 29, 28.07% aged 30 to 64, 47.37% aged 65 to 84, and 3.51% were 85 years of age and older.