Utah Code § 10-3b-601
§ 10-3b-601. Authority to change to another form of municipal government.
As provided in this part, a municipality may change from the form of government under which it operates to: (1) the council-mayor form of government with a five-member council; (2) the council-mayor form of government with a seven-member council; (3) the six-member council form of government; or (4) the five-member council form of government.