Under the 2025 weapons-code recodification, only individuals younger than 21 commit the offense of unlawful concealed carry (and only without a provisional or recognized permit). By exclusion, adults 21+ who may lawfully possess a firearm may carry concealed in public without a permit. Effective May 7, 2025.
"An actor commits unlawful carrying of a concealed firearm by an individual under 21 years old if: (a) the actor is younger than 21 years old; (b) the actor does not have a provisional concealed carry permit issued in accordance with Section 53-5a-304 or a concealed carry permit lawfully issued by or in another state."
Utah Code § 76-11-202 (Unlawful carrying of a concealed firearm by an individual under 21 years old) statute