Jefferson County, Montana
Jefferson County is a county found in the U.S. state of Montana. As of the 2020 United States Census, there were 12,085 people.[2] Its county seat is Boulder.[3] The county was created in 1865[4] and named after Thomas Jefferson,[5] the 3rd President of the United States (1801–1809).
| Jefferson County, Montana | |
| Map | |
 Location in the state of Montana | |
 Montana's location in the U.S. | |
| Statistics | |
| Founded | February 2, 1865[1] |
|---|---|
| Seat | Boulder |
| Largest town | Clancy |
| Area - Total - Land - Water |
1,659 sq mi (4,297 km²) 1,656 sq mi (4,289 km²) 2.6 sq mi (7 km²), 0.2 |
| Population - Density |
|
| Time zone | Mountain: UTC-7/-6 |
| Website: http://www.jeffersoncounty-mt.gov/ | |
| Named for: Thomas Jefferson | |
| * Montana county number 51 | |
References
- ↑ "Montana County Formation Table". genealogytrails.com. Retrieved April 3, 2018.
- ↑ "QuickFacts: Jefferson County, Montana". United States Census Bureau. Retrieved January 4, 2024.
- ↑ "Find a County". National Association of Counties. Archived from the original on May 31, 2011. Retrieved June 7, 2011.
- ↑ "Montana Place Names Companion". Montana Place Names From Alzada to Zortman. Montana Historical Society Research Center. Retrieved December 1, 2014.
- ↑ Gannett, Henry (1905). The Origin of Certain Place Names in the United States. Govt. Print. Off. p. 168.
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