In 2022, the population of Miami was 147, a 1.34% decrease year-by-year from 2021. Previously, in 2021, Miami's population was 149, a decline of 0.00% compared to a population of 149 in 2020.
The median age in Miami, MO is 28.0, as per 2021 ACS 5-Year Estimates. Of the total population, 37.88% were under the age of 15, 15.15% aged 15 to 29, 25.76% aged 30 to 64, 19.70% aged 65 to 84, and 1.52% were 85 years of age and older.