Bella Villa is a city in St. Louis County, Missouri, in the United States.

[6] According to the United States Census Bureau, the city has a total area of 0.13 square miles (0.34 km2), all land.

There were 346 housing units at an average density of 2,661.5 per square mile (1,027.6/km2).

34.5% of all households were made up of individuals, and 12.9% had someone living alone who was 65 years of age or older.

There were 351 housing units at an average density of 2,793.8 per square mile (1,078.7/km2).

39.3% of all households were made up of individuals, and 20.8% had someone living alone who was 65 years of age or older.