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How do I legally change my name in Illinois?

Federal & State Law Editorial TeamLast reviewed: 2026-05-17

Illinois adult name changes are governed by 735 ILCS 5/Article XXI (§§ 21-101 through 21-104) and filed in the circuit court of the county where the petitioner has resided for at least six months.

1. File the Petition

  • Complete Petition for Change of Name with current/proposed name, residence, and disclosure of any felony convictions.
  • File with the circuit clerk; filing fee is approximately $254 in Cook County (varies $200–$350 by county).
  • Residency: must have lived in Illinois at least six months (735 ILCS 5/21-101).
  • 2. Publication Requirement

  • Publish notice of the hearing in a newspaper of general circulation in the county once a week for three consecutive weeks, with the first publication at least six weeks before the hearing (735 ILCS 5/21-103).
  • Publication cost: $80–$300 depending on newspaper.
  • Waiver available for transgender petitioners, abuse survivors, or under a court protective order (735 ILCS 5/21-101(b)).
  • 3. Hearing

  • Brief hearing where judge confirms identity and reviews disclosures.
  • Felony restrictions: petitioners convicted of identity theft, felony fraud, or sex offenses face restrictions or outright bars (735 ILCS 5/21-101).
  • 4. After the Decree

  • Certified copies ~$9 each.
  • File SSA Form SS-5 (free).
  • Update IL DL at Secretary of State ($5 corrected card), passport, voter registration.
  • 5. Divorce-Based Restoration

  • Illinois Marriage and Dissolution of Marriage Act (750 ILCS 5/413(b)) allows restoration in the divorce judgment.
  • This is legal information, not legal advice.

    When to Talk to a Lawyer
    • Name change sought to evade creditors or a criminal record
    • Transgender name change with safety concerns requiring sealed records
    • Minor's name change disputed by the other parent
    Related Statutes & Laws
    • 735 ILCS 5/21-101
    • 735 ILCS 5/21-102
    • 735 ILCS 5/21-103
    • 735 ILCS 5/21-104
    • 750 ILCS 5/413

    This is legal information, not legal advice. Laws vary by jurisdiction and change frequently. Always verify current law with official sources and consult a licensed attorney in your jurisdiction for advice on your specific situation.