This is a list of the National Register of Historic Places listings in St. Louis County, Missouri.
This is intended to be a complete list of the properties and districts on the National Register of Historic Places in St. Louis County, Missouri, United States. Latitude and longitude coordinates are provided for many National Register properties and districts; these locations may be seen together in a map. There are 189 properties and districts listed on the National Register in the county. Another 3 properties were once listed but have been removed.
The city of St. Louis is an independent city separate from St. Louis County, so properties and districts in the city of St. Louis are listed here.
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