Jefferson County, Montana

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Jefferson County
Jefferson County Courthouse in Boulder
Jefferson County Courthouse in Boulder
Map of Montana highlighting Jefferson County
Location within the U.S. state of Montana
Map of the United States highlighting Montana
Montana's location within the U.S.
Coordinates: 46°11′N 112°07′W / 46.18°N 112.11°W / 46.18; -112.11
Country United States
State Montana
FoundedFebruary 2
Named forThomas Jefferson
SeatBoulder
Largest townBoulder
Area
 • Total1,659 sq mi (4,300 km2)
 • Land1,656 sq mi (4,290 km2)
 • Water2.6 sq mi (7 km2)  0.2%%
Population
 • Estimate 
(2017)
11,891
 • Density7.2/sq mi (2.8/km2)
Time zoneUTC−7 (Mountain)
 • Summer (DST)UTC−6 (MDT)
Congressional districtAt-large
Websitewww.jeffersoncounty-mt.gov

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.[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).

References[change | change source]

  1. "Montana County Formation Table". genealogytrails.com. Retrieved April 3, 2018.
  2. "State & County QuickFacts". US Census Bureau. Archived from the original on July 12, 2011. Retrieved September 15, 2013. Cite uses deprecated parameter |deadurl= (help)
  3. "Find a County". National Association of Counties. Archived from the original on May 31, 2011. Retrieved June 7, 2011. Cite uses deprecated parameter |deadurl= (help)
  4. "Montana Place Names Companion". Montana Place Names From Alzada to Zortman. Montana Historical Society Research Center. Retrieved December 1, 2014.
  5. Gannett, Henry (1905). The Origin of Certain Place Names in the United States. Govt. Print. Off. p. 168.