Lamar Heights is a city in Barton County, Missouri, United States.

There were 90 housing units at an average density of 115.4 per square mile (44.6/km2).

38.0% of all households were made up of individuals, and 12.7% had someone living alone who was 65 years of age or older.

The racial makeup of the village was 94.91% White, 0.46% Native American, 0.93% Asian, and 3.70% from two or more races.

29.2% of all households were made up of individuals, and 7.9% had someone living alone who was 65 years of age or older.

About 18.6% of families and 18.3% of the population were below the poverty line, including 28.1% of those under the age of eighteen and none of those 65 or over.