Musselshell County

Musselshell County spans 1,863 square miles of rolling grasslands in south-central Montana, with the Bull Mountains rising in the southeastern region.

The county was established in 1911 by Montana Governor Edwin L. Norris, incorporating portions of Fergus, Yellowstone, and Meagher counties into a new administrative division.

The Signal Peak Mine continues the region's coal mining heritage, employing 300 workers and maintaining the community's connection to natural resource industries.

The county seat of Roundup serves as the primary administrative center, offering government services and community facilities for the 4,730 residents recorded in 2020.

The Musselshell River, which gave the county its name, received its designation in 1805 when Lewis and Clark discovered numerous freshwater mussels along its banks.

Location: Montana

Inception: 1911

Capital city: Roundup

Website: http://mt.gov/maco/Counties/Musselshell.htm

Shares border with: Petroleum County, Yellowstone County, Rosebud County, Fergus County, Golden Valley County

Website: http://mt.gov/maco/Counties/Musselshell.htm

GPS coordinates: 46.49000,-108.40000

Latest update: March 3, 2025 18:04