Welcome to Jefferson County

Jefferson County has something for everyone; from rivers for floating and fishing, to hiking and climbing in the Elkhorn Mountain range, and a large motorized and non-motorized trail system. Boulder, High Ore and Basin are home to several radon health mines, ghost towns, Boulder Hot Springs and Whitehall hosts Frontier Days every July. The county fair is held in Boulder in August. Jefferson County abounds with natural resources and its economy is based around these, including production agriculture, wood products and mining.

The Latest...

Census Information

link to census Youtube video

The Census begins in mid-March 2020. Counting everyone in Montana is critical because it determines the state’s share of federal funding over the next decade, it shapes local voting districts, and it determines whether Montana will get another representative in Congress. This year you'll be able to fill out the census online. For more information click here.

COVID-19 and County Services

Many county buildings and offices re-opened with social distancing measures on Monday; May the 4th. Many of these services are available via phone or email and the public is encouraged to utilize these as much as possible. Information is available on each department's web page. Please follow social distancing signs and directions so that the county can continue to provide services to the public.

The County Commission has established an online/call in platform for citizens to participate in County meetings remotely. At the designated meeting time, those wishing to participate can watch online by visiting https://zoom.us/join and entering the meeting ID 671-828-8589. Citizens can also access the meeting on their phones by calling 1-312-626-6799 and entering the meeting ID 671-828-8589.

If you have returned from international travel, please inform the Jefferson County Health Department by calling 225-4007.

Are you wearing the right mask?

Current Projects, Materials or Equipment Open for Bid

None at this time