Adler Planetarium Illinois Free Admission Days

The Adler Planetarium is free for Illinois residents (with proof of residency) on select days throughout the year. Stop by and enjoy as part of our Illinois Resident Discount Days program.

Upcoming 2026 Illinois Resident Discount Days

• September: 8, 9, 10, 14, 15, 16

• October: 1, 26, 27, 28

• November: 9, 10, 16, 17, 18

Proof of residency will be required upon checkout; please use your zipcode as the promo code. To show proof of residency at the museum, you can use a valid Illinois driver’s license or photo ID, an Illinois student ID with a photo, or a photo ID plus a document (utility bill, lease, etc.) that shows your name and Illinois address. If checking out on mobile, please expand your cart (to the left of checkout) to apply your zipcode.