An individual's naturalization date can usually be found on any of the documents listed below. If you have the minimum information required to find one of these documents, select the name of that document. The items in the list are ordered from most to least important. If you do not have the minimum information required, read the paragraph below this list.

Naturalization records

To find an individual's naturalization date on a naturalization record, you must at least know the individual's full name, approximate date of birth, and maybe the town where the individual lived at the time of naturalization, depending on when it took place. Earlier records may be in the town courthouse.

Census records

Beginning in 1900, the census recorded whether or not an individual was a naturalized citizen. To find an individual's naturalization date in census records, you must at least know the individual's name, the state, and the county in which the individual lived when the census was taken.

Passport applications

To find an individual's date naturalization date on a passport application, you must at least know the individual's name and the year that the application was filed.

For a description of any of the records listed above, see the topic Genealogy dictionary.

To get help finding the minimum information required to locate any of the records listed above, select one of the following items:

Finding the minimum information for naturalization records

Finding the minimum information for passport applications

Finding the minimum information for census records

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