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Jefferson County, Montana

County in Montana, United States From Wikipedia, the free encyclopedia

Jefferson County, Montanamap

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]

Quick Facts Country, State ...
Jefferson County
County
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Jefferson County Courthouse in Boulder
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Location within the U.S. state of Montana
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Montana's location within the U.S.
Coordinates: 46.18°N 112.11°W / 46.18; -112.11
Country United States
State Montana
FoundedFebruary 2, 1865[1]
Named forThomas Jefferson
SeatBoulder
Largest townClancy
Area
 • Total
1,659 sq mi (4,300 km2)
 • Land1,656 sq mi (4,290 km2)
 • Water2.6 sq mi (7 km2)  0.2%
Population
 (2020)
 • Total
12,085
 • Estimate 
(2022)
12,826
 • Density7/sq mi (3/km2)
Time zoneUTC−7 (Mountain)
 • Summer (DST)UTC−6 (MDT)
Congressional district2nd
Websitewww.jeffersoncounty-mt.gov
  • Montana county number 51
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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

More information Year, Republican ...
United States presidential election results for Jefferson County, Montana[7]
Year Republican Democratic Third party(ies)
No. %No. %No. %
2024 5,544 66.85% 2,516 30.34% 233 2.81%
2020 5,345 65.57% 2,625 32.20% 181 2.22%
2016 4,177 62.21% 1,998 29.76% 539 8.03%
2012 4,055 62.18% 2,272 34.84% 194 2.98%
2008 3,538 55.80% 2,582 40.72% 221 3.49%
2004 3,844 65.51% 1,881 32.06% 143 2.44%
2000 3,308 64.07% 1,513 29.30% 342 6.62%
1996 2,248 46.82% 1,775 36.97% 778 16.20%
1992 1,541 36.47% 1,415 33.49% 1,269 30.04%
1988 2,007 52.31% 1,746 45.50% 84 2.19%
1984 2,226 61.53% 1,324 36.59% 68 1.88%
1980 1,841 57.12% 1,055 32.73% 327 10.15%
1976 1,387 52.26% 1,210 45.59% 57 2.15%
1972 1,281 56.06% 904 39.56% 100 4.38%
1968 798 45.06% 820 46.30% 153 8.64%
1964 662 40.59% 967 59.29% 2 0.12%
1960 817 51.38% 769 48.36% 4 0.25%
1956 1,049 61.38% 660 38.62% 0 0.00%
1952 1,084 60.76% 687 38.51% 13 0.73%
1948 750 45.62% 836 50.85% 58 3.53%
1944 797 49.72% 803 50.09% 3 0.19%
1940 830 39.58% 1,259 60.04% 8 0.38%
1936 573 27.78% 1,409 68.30% 81 3.93%
1932 784 37.09% 1,246 58.94% 84 3.97%
1928 1,013 56.97% 751 42.24% 14 0.79%
1924 648 36.49% 434 24.44% 694 39.08%
1920 969 54.47% 688 38.67% 122 6.86%
1916 712 36.63% 1,124 57.82% 108 5.56%
1912 239 20.03% 479 40.15% 475 39.82%
1908 546 39.22% 714 51.29% 132 9.48%
1904 663 45.54% 580 39.84% 213 14.63%
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Demographics

Summarize
Perspective
More information Census, Pop. ...
Historical population
CensusPop.Note%±
18701,531—
18802,46460.9%
18906,026144.6%
19005,330−11.5%
19105,6015.1%
19205,203−7.1%
19304,133−20.6%
19404,66412.8%
19504,014−13.9%
19604,2977.1%
19705,23821.9%
19807,02934.2%
19907,93912.9%
200010,04926.6%
201011,40613.5%
202012,0856.0%
2022 (est.)12,826[8]6.1%
U.S. Decennial Census[9]
1790–1960,[10] 1900–1990,[11]
1990–2000,[12] 2010–2020[2]
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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

Education

Whitehall Public Schools has two components: Whitehall Elementary School District and Whitehall High School District.[26]

High school districts include Jefferson High School District and Whitehall High School District.[27]

Elementary school districts include:[27]

  • Basin Elementary School District
  • Boulder Elementary School District
  • Cardwell Elementary School District
  • Clancy Elementary School District
  • Montana City Elementary School District
  • Three Forks Elementary School District
  • Whitehall Elementary School District
  • Willow Creek Elementary School District

See also

References

External links

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