Dennis Acres is a village in Newton County, Missouri, United States.

According to the United States Census Bureau, the village has a total area of 0.05 square miles (0.13 km2), all land.

There were 31 housing units at an average density of 620.0 per square mile (239.4/km2).

22.2% of all households were made up of individuals, and 7.4% had someone living alone who was 65 years of age or older.

33.3% of all households were made up of individuals, and 7.4% had someone living alone who was 65 years of age or older.

There were 11.1% of families and 17.1% of the population living below the poverty line, including no under eighteens and none of those over 64.