St. Clair County, Michigan GenealogyEdit This Page

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United States  > Michigan > St. Clair County


County Courthouse

St. Clair County Courthouse
201 McMorran Blvd.
Port Huron, MI 48060-4006
Phone: (810) 985-2200

St. Clair County; 201 McMorran Blvd; Port Huron, MI 48060-4006; Ph. 810.985.2200 Details: (Attached to Macomb Co prior to organization 8 May 1821) (Co Clk has b rec from 1867, m rec from 1834, d rec from 1868, div & ct rec from 1849)


Parent County

1820--St. Clair County was created 28 March 1820 from Macomb County. It was attached to Macomb County prior to organization 8 May 1821.  County seat: Port Huron [1]

Boundary Changes

Record Loss


Populated Places

Neighboring Counties






Local Histories


Standard atlas of St. Clair County, Michigan : including a plat book of the villages, cities and townships of the directory, reference business directory and departments devoted to general information / compiled and published by Geo. A. Ogle & Co.
Geo. A. Ogle & Co.
Chicago: Geo. A. Ogle, 1897.;cc=micounty;view=toc;idno=BAC4462.0001.001


Civil War

Civil War service men from St. Clair County served in various regiments. Men often joined a regiment or a company (within a regiment)that originated in their county. Listed below are the military units that were formed in or had many men from St. Clair County.





Vital Records

  • Michigan Birth Registrations, 1867-1902 -- Free name indexes and images at FamilySearch Record Search. Records include such information as name of child, birthdate and place, if still-born, illegitimate or twin, gender, race and record number.
  • Michigan Marriage Registrations, 1868-1925 -- Free name indexes at FamilySearch Record Search.  Records include such information as names of bride and groom, date of license, ages, race, residences, birthplaces, occupations and names of the fathers of the bride and groom.
  • Michigan Death Registrations, 1867-1897-- Free name indexes and images at FamilySearch Record Search.   Records include such information as name of deceased, date and place of death, gender, color, marital status, age in years, months and days, disease or apparent cause of death, birthplace, names and occupations of parents, and the date the record was made.
  • Michigan Deat Records, 1897-1920- Images are available free at
  • St. Clair County Marriages and Deaths -- Marriages beginning in 1838 and ending in 1898.  Includes all the County plus data on Ontario Canada names.
  • Another St. Clair County Marriage site lists people from Lambton County., Ontario, Canada and elsewhere in Ontario who were married in St. Clair County, Michigan. (Most marriages took place in Port Huron, Mich).

Societies and Libraries

Family History Centers

Web Sites

  • USGenWeb project. May have maps, name indexes, history or other information for this county. Select the state, then the county.
  • Family History Library Catalog


  1. The Handybook for Genealogists: United States of America,10th ed. (Draper, UT:Everton Publishers, 2002).


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