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

[5] According to the United States Census Bureau, the city has a total area of 5.08 square miles (13.16 km2), all land.

[6] The 2020 United States census[8] counted 18,333 people, 7,430 households, and 4,917 families in Manchester.

There were 7,742 housing units at an average density of 1,539.2 per square mile (594.2/km2).

Of all households, 28.7% consisted of individuals and 9.9% had someone living alone who was 65 years of age or older.

24.3% of all households were made up of individuals, and 7.7% had someone living alone who was 65 years of age or older.

20.6% of all households were made up of individuals, and 5.4% had someone living alone who was 65 years of age or older.

[12] Hanna Woods, Carman Trails, and Wren Hollow are some of the elementary schools that serve Manchester.

The Grand Glaize Branch of St. Louis County Library is in Manchester.

[13][14][15] John F. Kennedy Catholic High School was in Manchester until its 2017 closure.