Illinois Sexual Assault Laws
By Samuel Strom, J.D. | Legally reviewed by FindLaw Staff | Last reviewed February 27, 2025
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Most sex crimes in Illinois fall under the umbrella of either criminal sexual assault or criminal sexual abuse. The difference typically depends on the type of contact the person commits. Sexual assault involves an act of sexual penetration. Sexual abuse generally involves sexual conduct, which includes touching someone's sex organs without their consent.
Violating Illinois' sexual assault laws can result in years in prison, sometimes up to a life sentence. The criminal penalties vary depending on the conduct, the victim's status, whether the accused has a criminal history, and other things.
The table below shows the basic provisions of Illinois law on sexual assault and abuse.
Code sections | |
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Definitions | Sexual conduct: The knowing touching or fondling of a person’s sex organs, anus, or breast, either directly or through clothing, or any body part of a child under the age of 13, or any transfer or transmission of semen by the accused upon any part of the victim’s body or clothing, for sexual gratification or arousal of the victim or accused. Sexual penetration: Any contact between the sex organ or anus of one person and an object or the sex organ, mouth, or anus of another person, or any intrusion of any part of a person’s body. |
Sexual assault | A person commits criminal sexual assault if that person commits an act of sexual penetration and:
Penalties:
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Aggravated sexual assault | A person commits aggravated criminal sexual assault if they commit criminal sexual assault and any of the aggravating circumstances listed below exist during the commission of the offense:
A person also commits aggravated criminal sexual assault if the following circumstances exist:
A person also commits aggravated criminal sexual assault if they commit an act of sexual penetration with a victim who is a person with a severe or profound intellectual disability. Penalties:
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Sexual abuse | A person commits criminal sexual abuse if they do any of the following:
Penalties:
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Aggravated criminal sexual abuse | A person commits aggravated criminal sexual abuse if they commit criminal sexual abuse, and any of the aggravating circumstances listed in the “Aggravated Sexual Assault” section exist during the commission of the offense. Also, a person commits aggravated criminal sexual abuse if they commit an act of sexual conduct against a victim who is under 18 and is a family member. A person commits aggravated criminal sexual abuse if:
Also, a person commits aggravated criminal sexual abuse if:
A person commits aggravated criminal sexual abuse if they commit an act of sexual conduct and:
A person commits aggravated criminal sexual abuse if they commit an act of sexual penetration or sexual conduct and:
Penalties: Class 1 or Class 2 felony, depending on the circumstances |
Classifications/sentences |
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Defenses |
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Related statutes |
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Note: State laws are subject to change through legislation, court rulings, and other means. Consult an Illinois sex crimes attorney or criminal defense attorney, or conduct your own research to verify the state laws you are researching.
Illinois Sexual Assault Laws: Related Resources
Browse the links below for more information about Illinois law and sexual assault laws generally:
- Illinois Law
- Illinois Criminal Laws
- Illinois Criminal Statute of Limitations
- Illinois Assault and Battery Laws
- Illinois Domestic Violence Laws
- Sexual Assault Overview
- Sexual Assault Defenses
- Sexual Assault Sentencing and Penalties
- Statutory Rape
For more information about other state's sexual assault laws, visit FindLaw's Official State Codes section.
Facing Sexual Assault Charges? An Attorney Can Help
Sexual assault charges carry serious penalties. The help of a competent lawyer is essential to ensuring that you present a compelling defense. Contact an experienced Illinois criminal defense attorney to learn more about your defense options.
Can I Solve This on My Own or Do I Need an Attorney?
- Complex cases usually require a lawyer
- Experienced lawyers can seek to reduce or eliminate criminal penalties
- Sexual assaults & sex crime convictions often have long sentences and lifelong consequences
Get tailored legal advice and ask a lawyer questions. Many attorneys offer free consultations.
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