Utah Code § 81-5-605: Venue for a parentage proceeding.

(1) Notwithstanding Title 78B, Chapter 3a, Venue for Civil Actions, a person shall bring a proceeding to adjudicate parentage in the county in which:

(a) the child resides or is found;

(b) the respondent resides or is found if the child does not reside in this state; or

(c) a proceeding for probate or administration of the presumed or alleged father's estate has been commenced.

(2) Subsection (1) does not apply to a proceeding brought in the Business and Chancery Court.