The total population of Houstonia is estimated to be 245 with 88 males (35.92%) and 157 females (64.08%). There are 69 more females than males in Houstonia.
In 2022, the population of Houstonia was 197, a 0.00% decrease year-by-year from 2021. Previously, in 2021, Houstonia's population was 197, an increase of 0.51% compared to a population of 196 in 2020.
The median age in Houstonia, MO is 61.2, as per 2021 ACS 5-Year Estimates. Of the total population, 6.37% were under the age of 15, 7.35% aged 15 to 29, 69.12% aged 30 to 64, 10.29% aged 65 to 84, and 6.86% were 85 years of age and older.