430 ILCS 66/65

(a) A licensee under this Act shall not knowingly carry a firearm on or into: (1) Any building, real property, and parking area under the control of a public or private elementary or secondary school; (2) Any building, classroom, laboratory, medical clinic, hospital, artistic venue, athletic venue, entertainment venue, officially recognized university-related organization property, and any real property, including parking areas, sidewalks, and common areas under the control of a public or private community college, college, or university; (3) Any building, parking area, or portion of a building under the control of an officer of the executive or legislative branch of government; (4) Any building designated for matters before a circuit court, appellate court, or the Supreme Court; (5) Any building or portion of a building under the control of a unit of local government; (7) Any building, real property, and parking area under the control of a public or private hospital or hospital affiliate, mental health facility, or nursing home; (8) Any bus, train, or form of transportation paid for in whole or in part with public funds; (9) Any building, real property, and parking area under the control of an establishment that serves alcohol on its premises, if more than 50% of the establishment's gross receipts within the prior 3 months is from the sale of alcohol; (10) Any public gathering or special event conducted on property open to the public that requires the issuance of a permit from the unit of local government; (12) Any public playground; (13) Any public park, athletic area, or athletic facility under the control of a municipality or park district.

(a-10) The owner of private real property of any type may prohibit the carrying of concealed firearms on the property under his or her control. The owner must post signage in accordance with subsection (d) of this Section indicating that firearms are prohibited on the property, unless the property is a private residence.

(b) Notwithstanding subsections (a), (a-5), and (a-10) of this Section, except on nuclear energy facilities, any licensee prohibited from carrying a concealed firearm into the parking area of a prohibited location shall be permitted to carry a concealed firearm on or about his or her person within a vehicle into the parking area and may store a firearm or ammunition concealed in a case within a locked vehicle or locked container out of plain view within the vehicle in the parking area.