C.R.S. § 11-30-105

A credit union organized in accordance with the provisions of this article 30, or in accordance with the laws of the United States or the laws of another state or territory of the United States, has the exclusive right to use the words “credit union” in its name or title; but an association composed of credit unions transacting business in this state may use the words “credit union” in its name or title. Any other person, association, corporation, or partnership using the words “credit union” in its name or title commits a petty offense.