The total population of Lamar Heights is estimated to be 145 with 74 males (51.03%) and 71 females (48.97%). There are 3 less females than males in Lamar Heights.
In 2022, the population of Lamar Heights was 169, a 0.60% increase year-by-year from 2021. Previously, in 2021, Lamar Heights's population was 168, a decline of 0.00% compared to a population of 168 in 2020.
The median age in Lamar Heights, MO is 54.0, as per 2021 ACS 5-Year Estimates. Of the total population, 18.75% were under the age of 15, 16.07% aged 15 to 29, 41.07% aged 30 to 64, 22.32% aged 65 to 84, and 1.79% were 85 years of age and older.