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Wyoming History Timeline

1700s - 1800s
  • (1742-1743) Francois Louis Verendyne entered Wyoming, discovered Big Horn Mountains
  • (1803) Louisiana Purchase completed, included present day Wyoming
  • (1806) American John Colter discovered Yellowstone, named area "Colter's Hell'; explored Teton Mountains
  • (1812) Robert Stuart discovered South Pass through Rocky Mountains
  • (1822) General William Ashley established trading post on Yellowstone River
  • (1827) Ashley's group took first wheeled vehicle, a four-pounder cannon, across South Pass
  • (1830) Kit Carson arrived in Wyoming
  • (1832) Capt. B. L. E. Bonneville led first wagons through South Pass; established Fort Bonneville
  • (1833) Bonneville discovered oil near Wind River Mountains
  • (1834) First permanent trading post, Ft. Laramie, established
  • (1842) Fort Bridger established; Capt. Fremont led expedition to Wyoming, discovered Fremont Peak; Gold discovered near South Pass
  • (1849) U. S. purchased Fort Laramie
  • (1854) Grattan Massacre occurred near Fort Laramie
  • (1867) Cheyenne founded; Transcontinental Railroad entered Wyoming
  • (1868) Wyoming Territory created
  • (1869) Women received right to vote
  • (1872) Yellowstone Park became first national park
  • (1877) Arapahoe Indians moved to Wind River Reservation
  • (1885) Chinese Massacre occurred at Rock Springs
  • (1890) Wyoming admitted into Union as 44th state
  • (1897) First Cheyenne Frontier Days celebrated
  • (1906) Devils Tower established, first national monument in U. S.
  • (1918) Prohibition passed; uranium discovered near Lusk
  • (1923) Kemmerer mine explosion killed ninety-nine
  • (1925) Nellie Tayloe Ross became first woman governor in U. S.; Teapot Dome Scandal occurred
  • (1933) Nellie Tayloe Ross named first woman director of U. S. Mint
  • (1949) Blizzard paralyzed entire state
  • (1978) World's largest radio telescope built on Jelm Mountain
  • (1979 - 1980) Cheyenne received 121 inches of snow
  • (1988) Devastating fire in Yellowstone National Park burned more than one million acres
  • (2000) Dick Cheney elected Vice President of U.S.
  • (2002) More than 6 million people visited Wyoming's national parks, monuments
  • (2004) Dick Cheney re-elected Vice President of U.S.
  • (2008) Wyoming rated Best State nationally for statewide litter eradication from public properties by the American State Litter Scorecord; Wyoming ranked most "business friendly" tax climate of all 50 states by the Tax Foundation
  • (2009) Wyoming ranked at top for fastest growing state
  • (2010) "Cowboy Ethics" new official state code
  • (2011) Environmental Protection Agency said chemicals from "fracking" had polluted groundwater near Pavillion
  • (2012) Two backcountry skiers, resort employee killed in avalanche
  • (2012) Bison meat prices reached all-time high
  • (2012) Federal government granted permit to allow tribe to kill two bald eagles for a religious ceremony

Wyoming Photographs

Devils towerGrand Prismatic SpringMorning Glory PoolMammoth Springs WyomingOld Faithful wyomingYellowstone National ParkDick Cheney

Wyoming Cities, Counties & Area Codes

City County Area Code
Laramie Albany 307
Lovell Big Horn 307
Gillette Campbell 307
Rawlins Carbon 307
Douglas Converse 307
Moorcroft Crook 307
Riverton Fremont 307
Torrington Goshen 307
Thermopolis Hot Springs 307
Buffalo Johnson 307
Cheyenne Laramie 307
Afton Lincoln 307
Casper Natrona 307
Lusk Niobrara 307
Cody Park 307
Wheatland Platte 307
Sheridan Sheridan 307
Pinedale Sublette 307
Rock Springs Sweetwater 307
Jackson Teton 307
Evanston Uinta 307
Worland Washakie 307
Newcastle Weston 307

About the Author

John Moen is a cartographer who along with his wife are the orignal founders of worldatlas.com. He and his wife, Chris Woolwine-Moen, produced thousands of award-winning maps that are used all over the world and content that aids students, teachers, travelers and parents with their geography and map questions. Today, it's one of the most popular educational sites on the web.

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This page was last updated on April 7, 2017.