ILCS » Chapter 705 · Act 405
Illinois Compiled Statutes

705 ILCS 405/5-120 (2026)

Exclusive jurisdiction

✓ current as of May 2026
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(705 ILCS 405/5-120)
    Sec. 5-120. Exclusive jurisdiction. Proceedings may be instituted under the provisions of this Article concerning any minor who prior to the minor's 18th birthday has violated or attempted to violate an Illinois State, county, or municipal law or ordinance. Except as provided in Sections 5-125, 5-130, 5-805, and 5-810 of this Article, no minor who was under 18 years of age at the time of the alleged offense may be prosecuted under the criminal laws of this State.
    The changes made to this Section by Public Act 98-61 apply to violations or attempted violations committed on or after January 1, 2014 (the effective date of Public Act 98-61).
(Source: P.A. 103-22, eff. 8-8-23; 103-27, eff. 1-1-24; 103-605, eff. 7-1-24.)

    
Notes of Decisions
Cited in 117 cases (46 in the last 5 years), 2002–2026 · leading case: People v. House
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People v. House (2021) Ill. · cites it 2× “Richardson, 2015 IL 118255 , ¶¶ 1, 3 (comparing 705 ILCS 405/5-120 (2012), with 705 ILCS 405/5-120 (West Supp.”
People v. Dawson (2022) Ill. App. Ct. · cites it 6× “” 705 ILCS 405/5-120 (West 2012). Section 5-120 provided that juvenile proceedings could be instituted under the Act for “any minor who prior to the minor’s 17th birthday has violated or attempted to violate” any law.”
People v. Luis R. (2010) Ill. · cites it 3× “" 705 ILCS 405/5-120 (West 2008). The court then noted that, under section 5-105(10) of the Act, a "minor" is defined as "a person under the age of 21 years subject to this Act.”
People v. Reed (2020) Ill. App. Ct. · cites it 5× “” Pointing to section 5-120 of the Juvenile Court Act of 1987 (Act) (705 ILCS 405/5-120 (West 2016)), defendant notes a 17-year-old offender would not have been automatically prosecuted as an adult for the offense of burglary on June 21, 2016 (the date he committed the offense…”
People v. Stewart (2022) Ill. · cites it 2× “One year later, in 2014, the Juvenile Court Act of 1987 (705 ILCS 405/1-1 et seq. (West 2014)) was amended to raise the age for exclusive juvenile court jurisdiction from 16 years to 17 years.”
People v. Hunter (2017) Ill. “The jury also found that Wilson personally discharged a firearm that proximately caused great bodily harm to another person.”
In re Kelan W. (2022) Ill. · cites it 6× “OPINION ¶1 At issue in this appeal is whether, under section 5-120 of the Juvenile Court Act of 1987 (Act) (705 ILCS 405/5-120 (West 2020)), a minor may be adjudicated delinquent for unlawful conduct committed outside of Illinois.”
People v. Wilson (2016) Ill. App. Ct. · cites it 2× “& 23 Section 5-120 of the Juvenile Court Act of 1987 provided, at the relevant time 1: “Exclusive jurisdiction. Proceedings may be instituted under the provisions of this Article concerning any minor who prior to the minor’s 17th birthday has violated or attempted to violate,…”
People v. Williams (2021) Ill. App. Ct. · cites it 4× “¶ 24 (citing 705 ILCS 405/5-120, 5-805(3)(a) (West 2016)).”
People v. Wells (2023) Ill. App. Ct. · cites it 2× “; see 705 ILCS 405/5-120 (West 2012). In July 2013, the legislature amended the Juvenile Court Act so that it applied to minors under 18 years of age beginning on the statute’s effective date of January 1, 2014.”
People v. Harmon (2015) Ill. App. Ct. · cites it 2× “See 705 ILCS 405/5-120 (West 2006).1 Defendant argues as follows.”
People v. Martinez (2021) Ill. App. Ct. · cites it 2× “In all three cases, the defendant was sentenced to a Class X term based on prior offenses committed when the defendant was a juvenile, prior to the amendment of section 5-120 of the Juvenile Court Act of 1987 (Act) (705 ILCS 405/5-120 (West 2014)). Moreover, certain juvenile…”
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