Utah Code § 10-2-711

(1) (a) A municipality having fewer than 50 residents may be dissolved on application to the district court by the county legislative body of the county where the municipality is located. (b) The population for each municipality under Subsection (1)(a) shall be derived from: (i) the estimate of the Utah Population Committee created in Section 63C-20-103; or (ii) if the Utah Population Committee estimate is not available, the most recent official census or census estimate of the United States Bureau of the Census. (2) Notice of the application shall be served on the municipality in the manner prescribed by law or by publication in the manner provided by law if the municipal authorities cannot be served. (3) The district court may enter an order approving the dissolution of the municipality on a finding that the existence of the municipality serves no valid municipal purpose, its existence is a sham, or on a clear and convincing showing that the best interests of the community would be served by the dissolution. (4) If the municipality is dissolved, the district court shall wind down the affairs and dissolve the municipality as quickly as possible in the same manner as is provided in Part 7, Dissolution of Municipalities.