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The St. Louis, Missouri Naturalization Index consists of two parts:

  • Index to selected naturalization records created prior to September 27, 1906
  • Index to naturalization records created on or after September 27, 1906

The index is based on microfilm copies of original naturalization records originating in St. Louis City and County Courts. The microfilm is available in the History and Genealogy Department and at the Family History Library in Salt Lake City. Original records are located at the National Archives, Central Plains Region in Kansas City Missouri.

Photocopies of indexed records may be requested by email from the History and Genealogy Department. A limit of three searches per request applies. Please review the library's lookup policy.

A declaration of intention may lead to further records

Contact the National Archives and include all information listed on the declaration of intention.

National Archives, Central Plains Region
400 W. Pershing Rd.
Kansas City, MO 64108