You must be 18 in Illinois without parental consent.
If you are a minor, Madison County requires parental signature and two matching I.D's that include both a name and face from a third party.
Forms of I.D's include:
-School ID . -Yearbook -State ID -Passport
Age requirements: 8+ earlobes
11+ cartilage, helix
14 + nose / septum, any ear piercing, tongue, lip, eyebrow and navel