Utah Code § 20A-13-103: Omissions from maps -- How resolved.

(1) If any area of the state is omitted from a Congressional district in the Congressional shapefile in the possession of the lieutenant governor's office, the county clerk of the affected county, upon discovery of the omission, shall attach the area to the appropriate Congressional district according to the requirements of Subsections (2) and (3).

(2) If the omitted area is surrounded by a single Congressional district, the county clerk shall attach the area to that district.

(3) If the omitted area is contiguous to two or more Congressional districts, the county clerk shall attach the area to the district that has the least population, as determined by the Utah Population Committee.

(4) The county clerk shall certify in writing and file with the lieutenant governor any attachment made under this section.