Illinois, County Naturalization Records, 1800-1998
Images of naturalization records from county courthouses in Illinois. The content and time period varies by county. Few counties have records after 1945.
Cite This Collection
"Illinois, County Naturalization Records, 1800-1998." Database with images. FamilySearch. http://FamilySearch.org : 18 December 2025. Various county courthouses, Illinois.
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