The total population of Allendale is estimated to be 56 with 35 males (62.50%) and 21 females (37.50%). There are 14 less females than males in Allendale.
In 2022, the population of Allendale was 48, a 0.00% decrease year-by-year from 2021. Previously, in 2021, Allendale's population was 48, a decline of 0.00% compared to a population of 48 in 2020.
The median age in Allendale, MO is 55.0, as per 2021 ACS 5-Year Estimates. Of the total population, 6.00% were under the age of 15, 0.00% aged 15 to 29, 48.00% aged 30 to 64, 36.00% aged 65 to 84, and 10.00% were 85 years of age and older.