Genealogy & Naturalization


Can you help me with genealogical research?

Staff in the Downtown Courthouse, Room 200, can help you locate certain older naturalization records.

You may also send an e-mail to: Please include as much information as possible in your request.

You may also contact the:

LaSalle County Genealogy Guild

115 West Glover Street

Ottawa, IL 61350.

815-433-5261 or e-mail them at:

General requirements for naturalization include:

  • a period of continuous residence and physical presence in the United States;

  • residence in a particular district prior to filing;

  • an ability to read, write and speak English;

  • a knowledge and understanding of U.S. history and government;

  • good moral character;

  • attachment to the principles of the U.S. Constitution; and,

  • favorable disposition toward the United States.

    All naturalization applicants must demonstrate good moral character, attachment, and favorable disposition. The other naturalization requirements may be modified or waived for certain applicants, such as spouses of U.S. citizens. Applicants should review the following materials and carefully read the  N-400  application instructions before applying.

    The application must be sent to:

    P.O. Box 21251
    Phoenix, AZ 85036


Follow this link to the U.S. Citizenship and Immigration Services website to get the most updated information on Naturalization.

For further information, please refer to the Guide for New Immigrants, published by the USCIS.

Circuit Clerk

Greg Vaccaro

Phone / Hours

Child Support Division:

Phone: 815-433-0774
Fax: 815-433-9198
119 W. Madison Street, Room 200
Ottawa, IL 61350

Civil Division:

Phone: 815-434-8671
Fax: 815-433-6647
119 W. Madison Street, Room 201
Ottawa, IL 61350

Traffic/Criminal Division:

Phone: 815-434-8271
Fax: 815-434-8299
707 Etna Road, Room 141
Ottawa, IL 61350

Office Hours:

8:00am - 4:30pm
Monday - Friday

Walk-in Divorce

Mon, Wed, Fri
9:00am - 10:00am

Walk-in Probate/Guardianship

Tues, Wed, Thurs
9:00am - 10:00am