Largest Counties in Utah

Rank County Population County Seat Established Area (km2) Density
1 Salt Lake County 1,029,654 Salt Lake City 1849 1,922 535.72
2 Utah County 516,553 Provo 1849 5,188 99.57
3 Davis County 306,468 Farmington 1850 774 395.95
4 Weber County 231,225 Ogden 1849 1,492 154.98
5 Washington County 138,104 St George 1852 6,283 21.98
6 Cache County 112,645 Logan 1857 3,017 37.34
7 Tooele County 58,207 Tooele 1849 17,977 3.24
8 Box Elder County 49,964 Brigham City 1856 14,882 3.36
9 Iron County 46,152 Parowan 1850 8,539 5.4
10 Summit County 36,313 Coalville 1854 4,848 7.49
11 Uintah County 32,577 Vernal 1880 11,603 2.81
12 Sanpete County 27,871 Manti 1849 4,118 6.77
13 Wasatch County 23,519 Heber City 1862 3,046 7.72
14 Carbon County 21,392 Price 1894 3,828 5.59
15 Sevier County 20,791 Richfield 1862 4,949 4.2
16 Duchesne County 18,596 Duchesne 1913 8,394 2.22
17 San Juan County 14,735 Monticello 1880 20,254 0.73
18 Millard County 12,492 Fillmore 1851 17,021 0.73
19 Emery County 10,965 Castle Dale 1880 11,557 0.95
20 Juab County 10,235 Nephi 1852 8,785 1.17
21 Morgan County 9,458 Morgan 1862 1,577 6
22 Grand County 9,214 Moab 1890 9,510 0.97
23 Kane County 7,114 Kanab 1864 10,334 0.69
24 Beaver County 6,618 Beaver 1856 6,708 0.99
25 Garfield County 5,161 Panguitch 1882 13,403 0.39
26 Wayne County 2,578 Loa 1892 6,374 0.4
27 Rich County 2,253 Randolph 1864 2,665 0.85
28 Piute County 1,545 Junction 1865 1,963 0.79
29 Daggett County 1,048 Manila 1919 1,805 0.58

Largest Counties in Utah

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