Who may access adult-use cannabis
The Illinois Cannabis Regulation Oversight Officer says adults 21 and older may buy adult-use cannabis. Under-21 medical patients may obtain cannabis through the separate medical program, including purchase by a caregiver from a medical dispensary. Only licensed businesses may sell adult-use cannabis; see the Illinois FAQ.
Resident and visitor possession limits
Illinois residents 21+ may possess up to 60 grams of flower, 1,000 milligrams of THC in infused products, and 10 grams of concentrate. Nonresidents may possess half those amounts: 30 grams, 500 milligrams, and 5 grams. The FAQ calls these totals cumulative across product categories. Do not apply the resident amount to a visitor.
Use, sales, and travel boundaries
The state FAQ says cannabis cannot be used in a public place. Non-medical possession or use by people under 21 remains illegal, while qualifying medical patients under 21 may access the separate medical program. The FAQ also says gifting cannabis to people under 21 is illegal; gifts among eligible adults must be noncommercial. This state rule is not permission for federal property or interstate transport; check current law before travel. See U.S. state and federal overview.
Quick FAQ
Are Illinois possession limits the same for residents and visitors?
No. Illinois lists resident limits of 60 g flower, 1,000 mg THC in infused products, and 10 g concentrate; nonresident limits are half those amounts. The totals are cumulative by category.
Can cannabis be used in public in Illinois?
No. The state FAQ says public use is prohibited, including smoking, vaping, eating, or otherwise using cannabis in a public place.
Can adults give cannabis as a gift to someone under 21?
No. The Illinois FAQ says gifting cannabis to people under 21 is illegal. Under-21 patients may access cannabis through the separate medical program, but that does not make an adult-use gift lawful; gifts among eligible adults must be noncommercial.
Sources
- Illinois Cannabis FAQ -- directly read 2026-09-25.
Sources checked 2026-09-25.