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Short answer: Yes. Cannabis is legal for adults in Illinois aged 21 and over, within the limits below.
Last checked against the official sources on this page on 6 September 2026.
Adult-use cannabis has been legal since January 2020 under the Cannabis Regulation and Tax Act, the first state to legalize sales through the legislature, with strong social-equity provisions.
Rules for this jurisdiction are being curated. Check back soon.