Mar 24, 2024 · Use this website for informational purposes only. The MCSO is headed by Sheriff Richard A. All prisons and jails have Security or Custody levels depending on the inmate’s classification, sentence, and criminal history. Millard County Jail is a minimum-security facility with 80 beds situated at 765 South Highway 99, Fillmore, UT 84631. In all of Millard County, this is the only county jail serving the entire county. The Millard County Jail is an important detention institution situated in Fillmore, Utah. The Millard County Jail in UT houses inmates who are awaiting court dates or serving sentences. Lookup who's in jail in Millard County, UT. Other Useful Details. View recent arrests and bookings at Millard County Jail.