At least 21 people have vanished in Utah since 2013 with little information on their whereabouts. According to the Utah Missing Persons Registry
Jerika Binks

Jerika Binks disappeared while jogging in American Fork last February. (Utah Department of Public Safety)
Jerika Binks, the most recent missing person on the list, was last seen on Feb. 18, 2018, in American Fork. According to Good4Utah
Video footage released by the Utah County Sheriff’s Office indicated Binks' last known location was near Lone Peak High School. According to the Daily Herald
Authorities haven't found evidence of foul play but haven't ruled it out. Binks' family is offering a $10,000 reward for information on her whereabouts.
Melvin Heaps

Melvin Heaps, a hiker from Arizona, went missing in the Uinta mountains. (Utah Department of Public Safety)
Arizona native Melvin Heaps, 74, was last seen on July 31, 2017, before a hike in the Uinta mountains. Heaps, who is partially deaf, left for a hiking trip in the Uintas along the Crystal Lake trailhead, according to the Salt Lake Tribune
After searching the area for several days, authorities were unable to find any trace of Heaps.
Emily & Gabriel Almiron

Emily Almiron and her son, Gabriel, disappeared in 2015. Her ex-boyfriend is charged with their murder. (Facebook)
Emily Almiron and her son, Gabriel, disappeared on September 8, 2015. They were last seen by Christopher Richard Poulson, Almiron's ex-boyfriend, leaving their Orem apartment. According to the Salt Lake Tribune
Almiron's disappearance was reported by her ex-husband when she failed to show up for a custody hearing. Police later arrested Poulson in Hawaii after Almiron's car was found in St. George, Utah, in April 2016. Location data showed Poulson had traveled to that location days after Almiron's disappearance, and a cadaver dog found evidence that a body had been in a car used by Poulson, which he later sold.
Fox 13 reported
Macin Smith

Macin Smith left his St. George, Utah home on September 1, 2015, and never returned. (Utah Department of Public Safety)
A 17-year-old St. George native, Macin Smith, left home on Sept. 1, 2015, leaving his phone and wallet at home, according to Good4Utah
According to the Spectrum
In 2017, human remains were found in the desert south of St. George, but it's currently unknown whether they are Smith's. The Spectrum