California, Northern U.S. District Court Naturalization Index - FamilySearch Historical Records

United States California 

What is in the Collection?
This collection is a card index to naturalization records in the circuit and district courts of California for the years 1852 to 1989. The cards are arranged alphabetically by surname.

The index is very accurate and the information that was current at the time of naturalization was usually reliable. However, there was always a chance for misinformation. Errors may have occurred because of the informant’s lack of knowledge or because of transcription errors or other circumstances.

The following collections are covered by this index:


 * Duplicate Certificates of Citizenship, 1852-1906 NAID 2524822
 * Naturalization Depositions, 1907-1963 NAID 2602672
 * Applications for Repatriation, 1936-1969 NAID 2601974
 * Petitions for Naturalization Transferred from Other Courts, 9/21/1952-8/23/1990 NAID 627696
 * Petitions for Naturalization,10/23/1903-9/17/1991 NAID 605234

What Can this Collection Tell Me?
Index cards generally include the following information:


 * Petition number
 * Date of petition
 * Alien Registration number
 * Name and residence of immigrant
 * Birth date of immigrant
 * Date certificate issued
 * Court where certificate issued

Declaration of intent and naturalization petitions usually included the following:


 * Declaration number
 * Name of the immigrant
 * Country of birth
 * Arrival date
 * Date of Declaration of Intent or Naturalization
 * Names of witnesses
 * Signature of judge or court official

In post-1906 records, you may also find:


 * Name
 * Birth date
 * Birthplace
 * Age
 * Race
 * Last foreign residence
 * Current residence
 * Arrival place
 * Marital status
 * Name of spouse
 * Maiden name of wife
 * Birth date of spouse
 * Residence of spouse

The naturalization volumes vary in size and format. Prior to the late 1800s each document was usually handwritten on one page. From the late 1800s and on, printed forms were used. After 1906, many entries were typewritten. While there were various types of naturalization records, the Declaration of Intent and Naturalization Petition usually had the most complete genealogical information.

The first naturalization act was passed in 1802. Immigrants to the United States were not required to apply for citizenship. Of those who did apply, many did not complete the requirements for citizenship. Naturalization to become a U.S. citizen was a two-part process: the Declaration of Intent to Naturalize, or First Papers, and the Naturalization Record (including the Naturalization Petition), or Final Papers. The First Papers were normally filed five years before the Final Papers because of the five-year residency requirement to become a citizen.

No centralized files existed before 1906. In 1906 federal forms replaced the various formats that had been used by the various courts. Copies were sent to the Immigration and Naturalization Service (INS), creating a central file for naturalization papers. The INS is now known as the U.S. Citizenship and Immigration Services (USCIS).

Naturalization records are generally well preserved, but some records may have been lost to fire or other disasters.

Naturalization is the process of granting citizenship privileges and responsibilities to foreign-born residents. California’s counties recorded naturalization procedures in the court records as legal proof of citizenship. The courts handling naturalizations changed several times so the card index was created as a way to quickly access specific records.

How Do I Search the Collection?
To begin your search it is helpful to know at least some of the following:


 * The full name of your ancestor.
 * The approximate immigration and naturalization dates.
 * The ancestor’s residence.

If you do not know this information, check the 1900 census and then calculate the possible year of naturalization based on the date of immigration. The 1920 census may tell you the exact year of immigration or naturalization.

Fill in the requested information in the initial search page. This search will return a list of possible matches. Compare the information in the list to what you already know about your ancestor to determine if it is the correct family or person. You may need to compare several persons in the list before you find your ancestor.

Search by Name by visiting the Collection Page.

View images in this collection by visiting the Browse Page then select the Description.

For tips about searching on-line collections see the on-line video at FamilySearch Search Tips and Tricks.

What Do I Do Next?
Whenever possible, view the original records to verify the information and to find additional information that might not be reported. These pieces of information can lead you to additional records and family members.

I Found Who I was Looking for, What Now?

 * Use the information in the index to find records in his or her country of origin such as emigrations, port records,ship’s manifests, birth, christening, marriage, or census records.
 * Use the information in each record to find additional family members, which may have naturalized from the same areas.
 * Repeat this process with additional family member’s records to find more generations of the family.
 * Church Records often were kept years before government records were required and are a good source for finding ancestors before 1900.

I Can’t Find Who I’m Looking for, What Now?

 * Try viewing the original record to see if there were errors in the transcription of the name, age, residence, etc. Remember that there may be more than one person in the records with the same name.
 * Collect entries for every person who has the same surname. This list can help you identify possible relations that can be verified by records.
 * If you cannot locate your ancestor in the locality in which you believe they lived, then try searching records of a nearby locality in an area search.
 * Standard spelling of names typically did not exist during the periods our ancestors lived in. Try variations of your ancestor’s name while searching the index or browsing through images.
 * Remember that sometimes individuals went by nicknames or alternated between using first and middle names. Try searching for these names as well.
 * Search the indexes and records of California, United States Genealogy.
 * Search in the California Archives and Libraries.

Known Issues with This Collection
For a full list of all known issues associated with this collection see the attached Wiki article. If you encounter additional problems, please email them to [mailto:support@familysearch.org support@familysearch.org]. Please include the full path to the link and a description of the problem in your e-mail. Your assistance will help ensure that future reworks will be considered.

Citing this Collection
Citing your sources makes it easy for others to find and evaluate the records you used. When you copy information from a record, list where you found that information. Here you can find citations already created for the entire collection and for each individual record or image.

Collection Citation:

Record Citation (or citation for the index entry):

Image Citation: