National Register Listing

Jefferson County Courthouse

200 Centennial Ave., Boulder, MT
Local significance of the building:
Politics/government; Architecture

Listed in National Register of Historic Places in 1980.

The National Register of Historic Places is the official list of the Nation’s historic places worthy of preservation. Authorized by the National Historic Preservation Act of 1966, the National Park Service’s National Register of Historic Places is part of a national program to coordinate and support public and private efforts to identify, evaluate, and protect America’s historic and archeological resources.

politics government architecture law courthouses buildings
Montana was the first state to elect a woman to Congress, Jeannette Rankin, who was elected to the U.S. House of Representatives in 1916. She was a pacifist and voted against the entry of the United States into both World War I and World War II.
Montana random facts
Jefferson County, Montana has a rich and fascinating history that dates back many centuries. The area where the county now stands was originally inhabited by Native American tribes, including the Salish and Kootenai peoples. European exploration began in the early 1800s when the Lewis and Clark expedition passed through the region, followed by fur trappers and traders.

In the mid-1800s, Jefferson County saw a surge in population as gold was discovered in the area. The first significant gold discovery in the county occurred in 1864 at Confederate Gulch, attracting miners from all over. This led to the establishment of Montana's first mining town, Diamond City, which became a bustling center of activity for a short time before eventually declining.

Mining continued to be a major industry in Jefferson County throughout the late 19th and early 20th centuries. Silver, copper, and other minerals were also mined in the area. The town of Butte, located in neighboring Silver Bow County, became a booming mining town and had a significant impact on the economy of Jefferson County.

As mining declined in the 20th century, the economy of Jefferson County shifted towards agriculture, ranching, and tourism. The county's natural beauty, with its mountains, rivers, and outdoor recreational opportunities, attracts visitors from all over. Today, Jefferson County remains a small, rural county with a population that values its history and the stunning natural landscape that surrounds it.

Overall, the history of Jefferson County, Montana is one of exploration, mining booms, and a transition towards a more diverse economy. The county's past is closely tied to the development of the region as a whole and continues to shape its present-day identity.

This timeline provides a glimpse into the major events and milestones that have shaped the history of Jefferson County, Montana.

  • 1805 - Members of the Lewis and Clark expedition enter present-day Jefferson County during their journey to the Pacific coast.
  • 1864 - The Montana Territory is established, including what is now Jefferson County.
  • 1865 - The town of Nevada City is founded during the Montana gold rush.
  • 1871 - Jefferson County is officially organized, named after President Thomas Jefferson.
  • 1881 - The Montana Central Railway is completed, passing through Jefferson County and connecting Helena to Butte.
  • 1903 - The large Granite Mountain Mine disaster occurs, resulting in the death of 168 miners.
  • 1915 - Boulder Dam is constructed along the Boulder River, providing hydroelectric power to the area.
  • 1937 - Jefferson County faces significant damage from the Helena-Nashua tornado, causing destruction in several towns.
  • 1985 - The Elkhorn Wildlife Management Area is established, preserving important wildlife habitat in Jefferson County.