St. Clair County and the city of St. Clair in Michigan
Wikipedia states that "St. Clair is a city in St. Clair County in the U.S. state of Michigan. The population was 5,802 at the 2000 census. The city is located on the St. Clair River near the southeast corner of St. Clair Township. Since 1886, St. Clair has been the home to Diamond Crystal Salt. "