Teton County was officially established in 1921, named after the prominent Teton mountain range, although the area had been inhabited by indigenous peoples, including the Shoshone and Gros Ventre tribes, for centuries before European settlement.

Geographically, Teton County is defined by the stunning Teton Range, a young and rugged mountain range formed by fault-block tectonics, creating dramatic landscapes of jagged peaks and glacial canyons.

Teton County encompasses a significant portion of Grand Teton National Park, established in 1929 to preserve the majestic scenery and abundant wildlife, attracting millions of visitors annually.

Jackson Hole, the valley floor of Teton County, is a high-altitude basin characterized by sagebrush flats, braided rivers, and numerous glacial lakes, contributing to its diverse ecosystem.

The Snake River, a major waterway flowing through Jackson Hole, is renowned for its world-class fly fishing and scenic float trips, becoming a central feature of the region's recreational appeal.

Teton County has a relatively small but affluent population, with a median household income significantly higher than the national average, driven by tourism, real estate, and investment income.

The population of Teton County has experienced substantial growth in recent decades, particularly during periods of economic expansion, reflecting its desirability as a second-home destination and a place to live amidst natural beauty.

Tourism is the dominant industry in Teton County, with visitors drawn to skiing, snowboarding, hiking, wildlife viewing, and the overall outdoor recreational opportunities.

The real estate market in Teton County is highly competitive, characterized by luxury properties and high land values, influenced by limited supply and strong demand from wealthy individuals.

Teton Village, located at the base of the Jackson Hole Mountain Resort, is a major center for skiing and snowboarding, attracting enthusiasts from around the world with its challenging terrain and abundant snowfall.

The town of Jackson, the county seat, maintains a distinctive Western character with its wooden sidewalks, antler arches, and a vibrant arts scene, contributing to the local cultural identity.

The Grand Teton Music Festival, held annually in Walk Festival Hall, brings renowned classical musicians to the area, enriching the cultural landscape and attracting a discerning audience.

Teton County plays a crucial role in wildlife conservation, supporting organizations dedicated to protecting grizzly bears, elk, bison, and other iconic species that inhabit the Greater Yellowstone Ecosystem.

The National Elk Refuge, located adjacent to the town of Jackson, provides winter habitat for thousands of elk, offering unparalleled opportunities for wildlife viewing and scientific research.

While not a UNESCO World Heritage site itself, Teton County lies adjacent to Yellowstone National Park, which is a designated UNESCO site, enhancing the overall significance of the region's natural and cultural heritage.