Hanley Hills is a village in St. Louis County, Missouri, United States.

[5] According to the United States Census Bureau, the village has a total area of 0.36 square miles (0.93 km2), all land.

There were 940 housing units at an average density of 2,611.1 per square mile (1,008.2/km2).

29.3% of all households were made up of individuals, and 7.7% had someone living alone who was 65 years of age or older.

There were 939 housing units at an average density of 2,529.6 per square mile (976.7/km2).

28.8% of all households were made up of individuals, and 9.0% had someone living alone who was 65 years of age or older.