Find your ancestors in Illinois, Northern District, naturalization index

What can these records tell me?

This index of naturalization cards from the United States District Court for the Northern District of Illinois covers petitions made by residents of northern Illinois, northwest Indiana, southern and eastern Wisconsin, and eastern Iowa. The index comprises series M1285 from the National Archives and Records Administration.

The records have the highest concentration from the mid-1800s to the mid-1900s, with a few outliers.

Each result will provide you with a transcript and image of the original record. Transcripts will generally provide the following details:

  • First name(s)
  • Last name
  • Birth year
  • Birth place
  • Birth country
  • Language
  • Naturalization year
  • Naturalization date
  • Place
  • City
  • State
  • Country

    The provided images of the original records may be able to offer additional details.