County	Founded	Parent County	County Seat
BEAVER	1856	Iron, Millard	BEAVER
BOX ELDER	1856	Unorganized Territory	BRIGHAM CITY
CACHE	1856	Unorganized Territory	LOGAN
CARBON	1894	Emery	PRICE
DAGGETT	1917	Uintah	MANILA
DAVIS	1850	Salt Lake	FARMINGTON
DUCHESNE	1913	Wasatch	DUCHESNE
EMERY	1880	Sanpete, Sevier	CASTLE DALE
GARFIELD	1864	Iron, Seveir, Kane	PANGUITCH
GRAND	1890	Emery, Uintah	MOAB
IRON	1852	Unorganized Territory	PAROWAN
JUAB	1852	Original County	NEPHI
KANE	1864	Washington, Unorg. Terr.	KANAB
MILLARD	1851	Juab	FILLMORE
MORGAN	1862	Davis, Summit	MORGAN
PIUTE	1866	Sevier	JUNCTION
RICH	1864	Formerly Richland	RANDOLPH
SALT LAKE	1849	Original County	SALT LAKE CITY
SAN JUAN	1880	Kane	MONTICELLO
SANPETE	1852	Original county	MANTI
SEVIER	1864	Sanpete	RICHFIELD
SUMMIT	1854	Salt Lake	COALVILLE
TOOELE	1852	Original county	TOOELE
UINTAH	1880	Wasatch	VERNAL
UTAH	1852	Original county	PROVO
WASATCH	1862	Summit	HEBER CITY
WASHINGTON	1852	Unorganized Territory	SAINT GEORGE
WAYNE	1892	Piute	LOA
WEBER	1852	Original county	OGDEN