Wyoming

Settlement & growth (pre-1960)

Long before European contact, Wyoming was home to several Native American nations, including the Shoshone, Arapaho, Crow, Cheyenne, and Lakota Sioux. These tribes followed the vast bison herds across the plains and through the mountain passes, with seasonal camps near what is now Lander (a traditional Shoshone gathering area) and along the North Platte River near Casper. The Shoshone and Arapaho were eventually confined to the Wind River Indian Reservation, established in 1868 near Fort Washakie, which remains the only reservation in the state today.

European-American settlement began in earnest with the fur trade in the early 1800s, when mountain men and trappers—many of French-Canadian and Scots-Irish descent—established trading posts along the Green River near Green River and the Sweetwater River near South Pass City. The Oregon, Mormon, and California Trails brought waves of westward-bound emigrants through Wyoming in the 1840s and 1850s, but few stayed; the land was too arid and remote for farming.

The real population boom came with the transcontinental railroad. The Union Pacific Railroad reached Cheyenne in 1867, and the city exploded as a rail hub and cattle-shipping center. Irish and Chinese laborers built the tracks, with Chinese workers concentrated in camps near Evanston and Rock Springs. The 1885 Rock Springs massacre, in which white miners killed 28 Chinese miners, drove most of the Chinese population out of the state, a demographic scar that persists today—Wyoming’s East/Southeast Asian population remains tiny at 0.6%.

Ranching and mining drew the next waves. Scots-Irish and English ranchers established vast cattle operations across the southern plains, centered on Laramie and Rawlins. Coal mining in the late 1800s brought immigrants from Italy, Greece, and Eastern Europe to towns like Kemmerer and Hanna. The oil boom of the 1910s and 1920s pulled in workers from Oklahoma and Texas, many of Scots-Irish and German descent, to Casper, which became the state’s oil capital. By 1960, Wyoming’s population was 330,000, overwhelmingly white, native-born, and rural, with a culture shaped by the cowboy, the miner, and the oil driller.

Modern era (post-1965)

The 1965 Hart-Cellar Act had minimal impact on Wyoming, as the state’s remote location and limited job base attracted few new immigrants. The foreign-born share remains the lowest in the nation at 2.0%. Instead, the modern demographic story is one of domestic migration and natural decline. The energy booms of the 1970s and 2000s brought temporary influxes of workers from Texas, Oklahoma, and the Gulf Coast to the Powder River Basin near Gillette and the Jonah Field near Pinedale, but these were largely white, native-born Americans who often left when busts followed booms.

The Hispanic population grew from under 5% in 1990 to 10.4% today, driven by agricultural labor in sugar beet and hay fields near Torrington and Powell, as well as construction and service work in Cheyenne and Casper. Many are Mexican-American families who arrived in the 1990s and 2000s, often from Texas and California. They have formed small but stable communities, with Spanish-language churches and markets appearing in Cheyenne’s south side and Casper’s east end. However, Wyoming’s Hispanic population remains far smaller than in neighboring Colorado or New Mexico.

Suburbanization has been limited. Cheyenne has seen modest suburban growth in areas like the Fox Farm and South Cheyenne neighborhoods, while Casper has expanded east toward Evansville. But Wyoming lacks the sprawling exurbs of the Front Range; most residents still live in small towns or on rural acreages. The college-educated share is 29.9%, below the national average, reflecting the state’s reliance on blue-collar industries like mining, ranching, and trucking. The University of Wyoming in Laramie is the main draw for educated newcomers, but many graduates leave for higher-paying jobs in Colorado or Texas.