page_title: Jefferson County, Montana
hierarchical_section_title: Jefferson County, Montana
caption_attribution_description: Jefferson County Courthouse in Boulder, Montana. It was added to the National Register of Historic Places as Building #80002422 in 1980.
context_page_description: Jefferson County is a county found in the U.S. state of Montana. As of the 2010 United States Census, there were 11,406 people. Its county seat is Boulder. The county was created in 1865 and named after Thomas Jefferson, the 3rd President of the United States.
context_section_description: Jefferson County is a county found in the U.S. state of Montana. As of the 2010 United States Census, there were 11,406 people. Its county seat is Boulder. The county was created in 1865 and named after Thomas Jefferson, the 3rd President of the United States (1801–1809).
caption: Jefferson County Courthouse in Boulder
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