Page 1 Page 2 Page 3 Page 4 Page 5 Page 6 Page 7 Page 8 Page 9 Page 10 Page 11 Page 12 Page 13 Page 14 Page 15 Page 16 Page 17 Page 18 Page 19 Page 20 Page 21 Page 22 Page 23 Page 24 Page 25 Page 26 Page 27 Page 28 Page 29 Page 30 Page 31 Page 32 Page 33 Page 34 Page 35 Page 36 Page 37 Page 38 Page 39 Page 40 Page 41 Page 42 Page 43 Page 44 Page 45 Page 46 Page 47 Page 48 Page 49 Page 50 Page 51 Page 52 Page 53 Page 54 Page 55 Page 56 Page 57 Page 58 Page 59 Page 60Counties and county seats 28 The land which became Wyoming was located at the intersection of three land acquisitions: the Louisiana Purchase (1803), the Oregon Country (1846), and the Mexican Cession (1848). As a result, before Wyoming became its own territory it was first part of the territories of Washington, Oregon, Idaho, Dakota, Nebraska, and Utah. Wyoming became a territory in 1868, with five counties. In 1890,Wyoming became a state with thirteen counties. Ten more counties were added after statehood. The last two counties,Teton and Sublette, were added in 1921. Cheyenne has been the capital and center of state government in Wyoming since it became a territory. County seats are the location of government for each county. These towns generally have the largest population in the county, with Green River and Lander being the exceptions. PARK FREMONT CARBON SWEETWATER TETON NATRONA ALBANY SUBLETTE LINCOLN CAMPBELL JOHNSON CROOK CONVERSE UINTA BIG HORN LARAMIE PLATTE WESTON GOSHEN NIOBRARA SHERIDAN WASHAKIE HOT SPRINGS Basin Buffalo Casper Cheyenne Cody Douglas Evanston Gillette Green River Jackson Kemmerer Lander Laramie Lusk Newcastle Pinedale Rawlins Sheridan Sundance Thermopolis Torrington Wheatland Worland County seats Capital Counties Oregon Territory Unorganized Territory Utah Territory 1850 Dakota Territory Nebraska Territory Washington Territory Utah Territory 1861 Carter County Carbon County Laramie County Albany County Uinta County 1868 Laramie Fremont Carbon Uinta Crook Pease Sweetwater Albany 1876 Laramie Fremont Big Horn Uinta Sweetwater Carbon Converse Crook Natrona Albany Weston Johnson Sheridan 1890 Data Go Interactive