Breckenridge Hills is a city in St. Louis County, Missouri, United States.

[4] According to the United States Census Bureau, the city has a total area of 0.81 square miles (2.10 km2), all land.

There were 2,128 housing units at an average density of 2,627.2 per square mile (1,014.4/km2).

32.5% of all households were made up of individuals, and 8.9% had someone living alone who was 65 years of age or older.

There were 2,173 housing units at an average density of 2,657.1 per square mile (1,025.9/km2).

31.4% of all households were made up of individuals, and 8.2% had someone living alone who was 65 years of age or older.