- illinois 2026

1. Click ‘Get Form’ to open it in the editor.
2. Begin by filling out the child's information as shown on the birth certificate. Ensure that all names and dates match exactly, including any accent marks or hyphens.
3. Next, provide the biological father's details. This includes his full name, place of birth, date of birth, social security number (if available), current address, and daytime phone number.
4. Proceed to fill in the biological mother's information similarly. Include her full name, maiden name, place of birth, date of birth, social security number (if available), current address, and daytime phone number.
5. Indicate whether the biological mother was married or in a civil union with someone other than the biological father at the time of the child's birth. If 'yes', provide the presumed parent's name.
6. Both parents must sign in front of a witness who is at least 18 years old. Ensure that all signatures are dated correctly before submitting.

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