Park County, Montana, was officially established in 1887, carved out of Gallatin County, signifying the area's growing population and economic importance.

The county's geography is dominated by the Absaroka and Gallatin mountain ranges, contributing to its rugged terrain and significant river valleys.

Yellowstone National Park's northern entrance is located in Gardiner, Park County, making tourism a cornerstone of the local economy.

The population of Park County in 2020 was approximately 17,191, reflecting a gradual increase over the past few decades, driven by its scenic beauty and recreational opportunities.

Ranching and agriculture have been historically vital to Park County, particularly in the fertile Yellowstone River Valley, though tourism has surpassed them in economic impact.

Livingston, the county seat, served as a major northern gateway for Yellowstone visitors and a significant railroad hub in the late 19th and early 20th centuries.

The Yellowstone River, a major tributary of the Missouri River, flows through Park County, providing vital irrigation and recreational resources.

Chico Hot Springs, located near Pray, is a historic resort that has attracted visitors for its geothermal waters and scenic setting since the late 19th century.

Park County hosts several rodeos and county fairs annually, celebrating its ranching heritage and fostering a strong sense of community.

The Dan Bailey Fly Fishing Company, headquartered in Livingston, helped popularize fly fishing and contributed significantly to the development of the sport.

The Yellowstone Caldera, a supervolcano partly located within Yellowstone National Park, influences the geothermal activity in the northern reaches of Park County.

The Paradise Valley, a scenic stretch of land along the Yellowstone River, is renowned for its breathtaking views and outdoor recreation opportunities.

The Sacajawea Path, a historic trail used by Native Americans, runs through Park County, showcasing the region's significance in indigenous history.

Politically, Park County has leaned conservative in recent elections, reflecting the values of its rural population and traditional industries.

The presence of Yellowstone National Park contributes to scientific research and conservation efforts focused on wildlife management and geothermal activity within Park County.