Missouri Naturalization and Citizenship

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Naturalization and Citizenship

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Online Resources


Naturalization records have been filed primarily in the circuit courts. In earlier years naturalization information was included in the minutes and order books of various courts along with other court matters. Eventually the papers were kept in separate volumes with indexes. You may obtain copies of declarations, petitions, and certificates by contacting the clerk's office in each Missouri county courthouse.


  • The Family History Library has copies of the records for some counties in the state. Search the FamilySearch Catalog for naturalization records under the county and state:

To see a coverage map of FamilySearch's holdings of Missouri county naturalization records, click here.

  • St. Louis Public Library owns these Naturalization Record microfilm sets:
Index to Naturalizations, St. Louis Circuit Court, 1816-1905
Naturalization Records, St. Louis Metropolitan Area, 1805-1926

Post-1906 Records

In 1906 the Immigration and Naturalization Service (now United States Citizenship and Immigration Services) was created, forms were standardized and duplicate records were sent by the court to the INS. After 1906, most records are under the jurisdiction of a U.S. district court. To access these records, use the Genealogy Program at www.uscis.gov. You may also search the FamilySearch Catalog for Missouri naturalization records, or contact the National Archives—Central Plains Region (Kansas City). The Archives maintains records from the U.S. Eastern District Court, 1907 to 1941, and the Western District Court, 1906 to 1924.


Missouri State Archives-Naturalization Records

National Archives-Naturalization

St. Louis Public Library



Missouri Research Outline. Salt Lake City, Utah: Intellectual Reserve, Inc., Family History Department, 1998, 2001.

NOTE: All of the information from the original research outline has been imported into the FamilySearch Wiki and is being updated as time permits.