there are no legal restrictions regarding the minimum members needed for a corporation:
QUOTE:
SJZ, Member, New York Bar / FreeAdvice Contributing AttorneyAnswered 3 years ago| Contributor
No, there is no minimum number of board members, and there is no minimum quorum. Corporations can be formed by a single person or shareholder, as in many subchapter-S corporations or in a corporation formed and owned by another corporation, where the second corporation is the only shareholder. Single shareholder corporations will typically only have a single board member, though they may have more if they want. During the process of forming a corporation, the incorporatator(s)--those forming the corporation--determine number of shares, the number of board members, requirements for a quorum, etc.
Generally speaking, whatever requirements are needed for forming a business in Illinois are set by the state; here's a link that may be helpful, and good luck:
http://business.illinois.gov/step_by_step_guides.cfmEND QUOTE