This post asking may a minor form a corporation is based on my answer to a Quora question. Please see Can a little kid register a company in United States?
Answer: States differ as to whether they let a minor form a corporation (i.e., whether a minor can act as an incorporator).
For example, Michigan, according to a 1981 Attorney General opinion, does not let a minor form a corporation. A footnote in that opinion lists 31 other jurisdictions whose incorporation statutes (as of that time) variously require that incorporators either be at least 18 years old or have the capacity to contract. As of the date of that opinion, those jurisdiction were: