Etymology

Saint Louis County

Today it means: One of the 114 counties in Missouri, United States. County seat: Clayton. Full definition →

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Saint Louis County · proper noun1

Named for Saint Louis, Missouri, despite separating from the area of the city itself in 1877.

Saint Louis County · proper noun2

Named for the Saint Louis River in northeastern Minnesota, whose mouth on Lake Superior is near Duluth.

Etymology from Wiktionary, CC BY-SA 4.0.