The total population of Unionville is estimated to be 115 with 72 males (62.61%) and 43 females (37.39%). There are 29 less females than males in Unionville.
In 2022, the population of Unionville was 75, a 0.00% decrease year-by-year from 2021. Previously, in 2021, Unionville's population was 75, a decline of 1.32% compared to a population of 76 in 2020.
The median age in Unionville, IA is 60.1, as per 2021 ACS 5-Year Estimates. Of the total population, 9.91% were under the age of 15, 13.51% aged 15 to 29, 43.24% aged 30 to 64, 29.73% aged 65 to 84, and 3.60% were 85 years of age and older.