St. Joseph County is the name of two counties in the United States:
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St. Joseph County, Indiana
St. Joseph County, commonly called St. Joe County by residents, is a county located in the U.S. state of Indiana. As of the 2020 census, the population was 272,912, making it the fifth-most populous county in Indiana. Formed in 1830, it was n ...
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St. Joseph County, Michigan
St. Joseph County is a county located in the U.S. state of Michigan, on the central southern border with Indiana. As of the 2020 United States Census, the population was 60,939. The county seat is Centreville.
French colonists in the late 17 ...
{{Geodis, uscounty