Jefferson County, Montana

Last updated

Jefferson County
County
Jefferson County Courthouse (2013) - Jefferson County, Montana.png
Jefferson County Courthouse in Boulder
Map of Montana highlighting Jefferson County.svg
Location within the U.S. state of Montana
Montana in United States.svg
Montana's location within the U.S.
Coordinates: 46°11′N112°07′W / 46.18°N 112.11°W / 46.18; -112.11
CountryFlag of the United States.svg United States
StateFlag of Montana.svg  Montana
FoundedFebruary 2, 1865 [1]
Named for Thomas Jefferson
Seat Boulder
Largest town Clancy
Area
 • Total1,659 sq mi (4,300 km2)
 • Land1,656 sq mi (4,290 km2)
 • Water2.6 sq mi (7 km2)  0.2%
Population
 (2020)
 • Total12,085
 • Estimate 
(2022)
12,826 Increase2.svg
 • Density7/sq mi (3/km2)
Time zone UTC−7 (Mountain)
 • Summer (DST) UTC−6 (MDT)
Congressional district 2nd
Website www.jeffersoncounty-mt.gov
  • Montana county number 51

Jefferson County is a county in Montana, United States. As of the 2020 census, the population was 12,085. [2] Its county seat is Boulder. [3] The county was created in 1865 [4] and named for President Thomas Jefferson. [5]

Contents

Jefferson County is part of the Helena, MT Micropolitan Statistical Area.

Geography

According to the United States Census Bureau, the county has a total area of 1,659 square miles (4,300 km2), of which 1,656 square miles (4,290 km2) is land and 2.6 square miles (6.7 km2) (0.2%) is water. [6]

Major highways

Adjacent counties

National protected areas

Politics

United States presidential election results for Jefferson County, Montana [7]
Year Republican Democratic Third party
No. %No. %No. %
2020 5,34565.57%2,62532.20%1812.22%
2016 4,17762.21%1,99829.76%5398.03%
2012 4,05562.18%2,27234.84%1942.98%
2008 3,53855.80%2,58240.72%2213.49%
2004 3,84465.51%1,88132.06%1432.44%
2000 3,30864.07%1,51329.30%3426.62%
1996 2,24846.82%1,77536.97%77816.20%
1992 1,54136.47%1,41533.49%1,26930.04%
1988 2,00752.31%1,74645.50%842.19%
1984 2,22661.53%1,32436.59%681.88%
1980 1,84157.12%1,05532.73%32710.15%
1976 1,38752.26%1,21045.59%572.15%
1972 1,28156.06%90439.56%1004.38%
1968 79845.06%82046.30%1538.64%
1964 66240.59%96759.29%20.12%
1960 81751.38%76948.36%40.25%
1956 1,04961.38%66038.62%00.00%
1952 1,08460.76%68738.51%130.73%
1948 75045.62%83650.85%583.53%
1944 79749.72%80350.09%30.19%
1940 83039.58%1,25960.04%80.38%
1936 57327.78%1,40968.30%813.93%
1932 78437.09%1,24658.94%843.97%
1928 1,01356.97%75142.24%140.79%
1924 64836.49%43424.44%69439.08%
1920 96954.47%68838.67%1226.86%
1916 71236.63%1,12457.82%1085.56%
1912 23920.03%47940.15%47539.82%
1908 54639.22%71451.29%1329.48%
1904 66345.54%58039.84%21314.63%

Demographics

Historical population
CensusPop.Note%±
1870 1,531—
1880 2,46460.9%
1890 6,026144.6%
1900 5,330−11.5%
1910 5,6015.1%
1920 5,203−7.1%
1930 4,133−20.6%
1940 4,66412.8%
1950 4,014−13.9%
1960 4,2977.1%
1970 5,23821.9%
1980 7,02934.2%
1990 7,93912.9%
2000 10,04926.6%
2010 11,40613.5%
2020 12,0856.0%
2022 (est.)12,826 [8] 6.1%
U.S. Decennial Census [9]
1790–1960, [10] 1900–1990, [11]
1990–2000, [12] 2010–2020 [2]

2020 census

As of the 2020 census, there were 12,085 people living in the county. [13]

2010 census

As of the 2010 census, there were 11,406 people, 4,512 households, and 3,301 families residing in the county. The population density was 6.9 inhabitants per square mile (2.7/km2). There were 5,055 housing units at an average density of 3.1 per square mile (1.2/km2). The racial makeup of the county was 95.5% white, 1.4% American Indian, 0.4% Asian, 0.1% black or African American, 0.4% from other races, and 2.2% from two or more races. Those of Hispanic or Latino origin made up 2.0% of the population. In terms of ancestry, 31.3% were German, 19.1% were Irish, 17.2% were English, 10.8% were Norwegian, and 4.2% were American.

Of the 4,512 households, 28.8% had children under the age of 18 living with them, 63.7% were married couples living together, 5.4% had a female householder with no husband present, 26.8% were non-families, and 22.6% of all households were made up of individuals. The average household size was 2.48 and the average family size was 2.90. The median age was 46.2 years.

The median income for a household in the county was $56,695 and the median income for a family was $67,195. Males had a median income of $50,978 versus $34,148 for females. The per capita income for the county was $26,437. About 2.7% of families and 12.8% of the population were below the poverty line, including 5.1% of those under age 18 and 8.6% of those age 65 or over.

Communities

Towns

Census-designated places

Unincorporated communities

Former communities

See also

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References

  1. ↑ "Montana County Formation Table". genealogytrails.com. Retrieved April 3, 2018.
  2. 1 2 "State & County QuickFacts". United States Census Bureau. Retrieved May 8, 2023.
  3. ↑ "Find a County". National Association of Counties. Archived from the original on May 31, 2011. Retrieved June 7, 2011.
  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.
  6. ↑ "2010 Census Gazetteer Files". United States Census Bureau. August 22, 2012. Archived from the original on December 5, 2014. Retrieved November 28, 2014.
  7. ↑ Leip, David. "Atlas of US Presidential Elections". uselectionatlas.org. Retrieved April 3, 2018.
  8. ↑ "Annual Estimates of the Resident Population for Counties: April 1, 2020 to July 1, 2022". United States Census Bureau. Retrieved May 8, 2023.
  9. ↑ "U.S. Decennial Census". United States Census Bureau. Retrieved November 28, 2014.
  10. ↑ "Historical Census Browser". University of Virginia Library. Retrieved November 28, 2014.
  11. ↑ "Population of Counties by Decennial Census: 1900 to 1990". United States Census Bureau. Retrieved November 28, 2014.
  12. ↑ "Census 2000 PHC-T-4. Ranking Tables for Counties: 1990 and 2000" (PDF). United States Census Bureau. Archived (PDF) from the original on March 27, 2010. Retrieved November 28, 2014.
  13. ↑ "Jefferson County, Montana". United States Census Bureau. Retrieved February 29, 2024.
  14. ↑ Amazon, Jefferson County MT Google Maps (accessed January 2, 2019)
  15. ↑ Bernice, Jefferson County MT Google Maps (accessed January 2, 2019)
  16. ↑ Elk Park, Jefferson County MT Google Maps (accessed January 2, 2019)
  17. ↑ Homestake, Jefferson County MT Google Maps (accessed January 2, 2019)
  18. ↑ Leadville, Jefferson County MT Google Maps (accessed January 2, 2019)
  19. ↑ La Hood Park, Jefferson County MT Google Maps (accessed January 2, 2019)
  20. ↑ Louisville, Jefferson County MT Google Maps (accessed January 2, 2019)
  21. ↑ Pappas Place, Jefferson County MT Google Maps (accessed January 2, 2019)
  22. ↑ Paul Place, Jefferson County MT Google Maps (accessed January 2, 2019)
  23. ↑ Piedmont, Jefferson County MT Google Maps (accessed January 2, 2019)
  24. ↑ Pipestone, Jefferson County MT Google Maps (accessed January 2, 2019)
  25. ↑ Renova, Jefferson County MT Google Maps (accessed January 2, 2019)
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