San Luis Obispo County CA Immigration Records

USA (1,403,636) > California (35,019) > San Luis Obispo County (446) > San Luis Obispo County Immigration Records (2)

USA (1,403,636) > California (35,019) > California Immigration Records (283) > San Luis Obispo County Immigration Records (2)

NOTE: Additional records that apply to San Luis Obispo County are also on the California Immigration Records page.

San Luis Obispo County Immigration Records

Index to Naturalization Records of the U.S. District for the Southern District of California, Central Division (Los Angeles), 1887-1937 Ancestry online

Naturalization Petitions for the Southern District Of California, 1887-1940 Fold3 online

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Research Tip

Naturalization documents can list a person's name, age, witnesses, and place of origin. In some cases, women were not required to naturalize separately from their husbands. Before 1906 in the United States, naturalization documents sometimes only listed a home country rather than a specific town or city where a person came from. Since 1906, more detailed information has been included in naturalization documents.

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