State of Deseret counties •
Great Salt Lake County – original county created January 31, 1850 •
Iron County – original county created January 31, 1850 •
Sanpete County – original county created January 31, 1850 •
Tuilla County – original county created January 31, 1850 •
Utah County – original county created January 31, 1850 •
Weber County – original county created January 31, 1850 •
Davis County – created October 5, 1850, from portions of
Great Salt Lake County and
Weber County County name changes •
Tuilla County, Deseret created January 31, 1850, re-created as
Tooele County, Utah Territory on March 3, 1852. •
Great Salt Lake County, Utah Territory created March 3, 1852, name changed to
Salt Lake County, Utah Territory on January 29, 1868 •
Richland County, Utah Territory created January 16, 1854, name changed to
Rich County, Utah Territory on January 29, 1868 ==Former counties==