Cedar Hill is an unincorporated community and census-designated place (CDP) in northwest Jefferson County, Missouri, United States. The population was 1,721 at the 2010 census.

History

A post office called Cedar Hill has been in operation since 1868. The community was named for cedar trees near the elevated town site.

Geography

Cedar Hill is located southwest of downtown St. Louis. Missouri Route 30, a four-lane highway, runs through the western side of the CDP, leading northeast into St. Louis and west to St. Clair.

According to the United States Census Bureau, the CDP has a total area of , all land.

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2020 census

As of the 2020 census, Cedar Hill had a population of 1,875. The median age was 39.3 years. 25.0% of residents were under the age of 18 and 14.5% of residents were 65 years of age or older. For every 100 females there were 107.9 males, and for every 100 females age 18 and over there were 103.0 males age 18 and over.

0.0% of residents lived in urban areas, while 100.0% lived in rural areas.

There were 713 households in Cedar Hill, of which 31.1% had children under the age of 18 living in them. Of all households, 51.2% were married-couple households, 19.2% were households with a male householder and no spouse or partner present, and 22.9% were households with a female householder and no spouse or partner present. About 24.0% of all households were made up of individuals and 6.5% had someone living alone who was 65 years of age or older.