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Naturalization Records


Naturalization is the process by which an alien becomes an American citizen. These records can provide a researcher with information such as a person's birth date and location, occupation, immigration year, marital status and spouse information, witnesses' names and addresses, and more.

What is Online here?

Get details on naturalization records and the process. Also, you can do a search to see what naturalization microfilm is available from us and at which facility nationwide.

To search this catalog online:

  1. From the main Microfilm Catalog page, click Advanced Search (next to the Search button)
  2. In the righthand column, under Subject Terms, type in Naturalization
  3. "Search"

Once you find the microfilm that you think will be helpful, you can then come research in person, hire an independent researcher, or purchase it.

We do not have naturalization records available online (with the exception of a few examples in the National Archives Catalog).

Where can I find Naturalization Records?


Prior to 1906, any "court of record" (municipal, county, state, or Federal) could grant U.S. citizenship. As a general rule, the National Archives does not have naturalization records created in State or local courts. However, a few indexes and records have been donated to the National Archives from counties, states and local courts and are available as National Archives microfilm publications. See the list of this county and state microfilm available.
For pre-1906 naturalizations:

  • Contact the State Archives for the state where the naturalization occurred to request a search of state, county, and local courts records.
  • Contact the NARA regional facility that serves the state where naturalization occurred to request a search of Federal court records

Naturalizations After 1906:

After 1906, the courts forwarded copies of naturalizations to the Immigration and Naturalization Service (INS).

Links to Resources

For a General Overview and More Information

Specific Naturalization Records

See also:
Immigration Records
Alien Records