High Ridge is an unincorporated community and census-designated place (CDP) in Jefferson County, Missouri, United States.

[4] A post office called High Ridge has been in operation since 1856.

[6] High Ridge is located in northern Jefferson County and is bordered to the north by Peaceful Village and Parkville.

The ridge is very cherty, and poor for conventional farming, hence the area became known for fruit trees, strawberries, blackberries, and truck farm produce which were sold in St.

[citation needed] According to the United States Census Bureau, the High Ridge CDP has a total area of 3.80 square miles (9.85 km2), all land.

20.8% of all households were made up of individuals, and 5.6% had someone living alone who was 65 years of age or older.