In 2022, the population of Gratz was 66, a 1.49% decrease year-by-year from 2021. Previously, in 2021, Gratz's population was 67, a decline of 0.00% compared to a population of 67 in 2020.
The median age in Gratz, KY is 61.7, as per 2021 ACS 5-Year Estimates. Of the total population, 14.29% were under the age of 15, 22.22% aged 15 to 29, 17.46% aged 30 to 64, 46.03% aged 65 to 84, and 0.00% were 85 years of age and older.