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St. Clair County, Michigan
Genealogy, History & Facts

St. Clair County, Michigan Facts

When was St. Clair County, MI Created?
St. Clair County was created on March 28, 1820 from Macomb County.

What is the County Seat of St. Clair County, MI?
The County Seat is located in Port Huron also, the county government website is

What counties are adjacent to St. Clair County, MI?
Bordering Counties are Sanilac CountyLapeer CountyMacomb County Lambton County Ontario.

St. Clair County, MI Census Records

What St. Clair County, MI census records are available?
There are many types of census records for St. Clair County guide you in researching your family tree. Federal Population Schedules are available for 1820183018401850186018701880 (free index)1890 (fragment)19001910192019301940.

St. Clair Co. Mortality Schedules can be found for 1850, 1860, 1870 and 1880. St. Clair Co. Industry and Agriculture can be obtained for 1850, 1860, 1870 and 1880. St. Clair Co. Union Veterans Schedules is available for 1890. One can find free online and printable census forms to help you with your research. See Also Michigan Census Records Research Guide

St. Clair County, MI Courthouse and Government Records

St. Clair County Courthouse

What genealogical records can I find in the St. Clair County Courthouse?
Researchers frequently overlook the great importance of St. Clair County court, probate, and land records data as a useful resource of ancestry and genealogy information. Buried away in Michigan courthouses and archives everywhere are the ambitions and frustrations of countless Michigan residents.

The possibilities are excellent that your forefathers have left a comprehensive document of at least a number of facets of their lives in the St. Clair County court records. Even if your forebears is not referred to in a Court case, contemplate all of the other procedures that could have lead to him or her to appear in court records. See Also Michigan Corthouse Records Research Guide.

St. Clair County, MI Societies and Family History Resources

What genealogical and historical societies, archives, museums, associations and libraries are available for St. Clair County, MI?
A list of St. Clair County Historical  and Genealogical Societies, Libraries, Archives. See also list of Statewide Michigan Archives, Historical & Genealogical Societies.

  • The Searchers c/o Pierson 14300 “V” Avenue Vicksburg MI 49097-9360
  • St. Clair County Family History Group P.O. Box 611483 Port Huron MI 48061-1483
  • Rootstalkers The P.O. Box 161 Anchorville 48004
  • State Archives of Michigan, 702 W Kalamazoo Str, P.O. Box 30738, Lansing, MI 48909-8238; (517) 373-1408
  • Library of Michigan, 702 W. Kalamazoo St, Lansing, MI 48909
  • Historical Society of Michigan, 1305 Abbott Rd., East Lansing, MI 48823; (517) 324-1828

Where can I connect with other St. Clair County, MI Researchers through message boards and forums?

What other genealogical resources are available in St. Clair County, MI?
The following are web links to Genealogy, Records and Resources pertaining to St. Clair County. Most of these genealogy links fall into 3 categories: Commercial Sites, Private Sites or Organization Sites. Some have free access some have to have a fee. This is just a list that has been compiled or submitted. I do not endorse or promote one genealogy site above another.

St. Clair Co. MI Books, Newspapers & Publications

St. Clair Co. MI Cemeteries & Church Records

St. Clair Co. MI Family Websites, Pictures & Histories

St. Clair Co. MI General and History Websites

St. Clair Co. MI Immigration & Naturalization

St. Clair Co. MI Maps, Atlases & Gazetteers

St. Clair Co. MI Military Records