Illinois Statewide Marriage Index, 1763–1900 Illinois State Archives

An Ongoing Project of the Illinois State Archives & the Illinois State Genealogical Society


Since 1985 the Illinois State Genealogical Society (ISGS) has cooperated with the Illinois State Archives to create an index to Illinois marriages occurring prior to 1901. Today more than one million marriages, or two million names, are included in the Illinois Statewide Marriage Index. Data entry has been done by Archives staff and volunteers working on mainframe terminals at the Illinois State Archives and by other volunteers who have entered hundreds of thousands of marriages at home on their personal computers.

The sources for this index include original county clerks' marriage records, such as marriage registers and licenses, as well as publications of county genealogical societies and private individuals. For each marriage, the index includes the names of the groom and bride, the date of the marriage or issuance of the license, the name of the county in which the marriage was performed, and a citation to the original record—volume and page number for registers or file number for licenses. Volume and page or license numbers are omitted in the index when published sources failed to provide this information.


The following abbreviations were used in the license field when marriages were entered from a source other than a marriage register or license:



Copies of marriage records included in the Statewide Marriage Index may be obtained from the Illinois Regional Archives Depository System if IRAD holds marriage records for that county or from the county clerk in the county in which the marriage occurred.

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