The total population of Gillett Grove is estimated to be 39 with 22 males (56.41%) and 17 females (43.59%). There are 5 less females than males in Gillett Grove.
In 2022, the population of Gillett Grove was 33, a 0.00% decrease year-by-year from 2021. Previously, in 2021, Gillett Grove's population was 33, a decline of 0.00% compared to a population of 33 in 2020.
The median age in Gillett Grove, IA is 61.8, as per 2021 ACS 5-Year Estimates. Of the total population, 20.51% were under the age of 15, 2.56% aged 15 to 29, 48.72% aged 30 to 64, 23.08% aged 65 to 84, and 5.13% were 85 years of age and older.