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Twin Falls County, Idaho

Coordinates: 42°21′N 114°40′W / 42.35°N 114.66°W / 42.35; -114.66
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Twin Falls County
County
Oregon Trail Wayside in Hagerman Fossil Beds National Monument
Oregon Trail Wayside in Hagerman Fossil Beds National Monument
Official seal of Twin Falls County
Seal
Map of Idaho highlighting Twin Falls County
Location within the U.S. state of Idaho
Map of the United States highlighting Idaho
Idaho's location within the U.S.
Coordinates: 42°21′N 114°40′W / 42.35°N 114.66°W / 42.35; -114.66
Country United States
State Idaho
FoundedFebruary 21, 1907
Named forSnake River waterfall
SeatTwin Falls
Largest cityTwin Falls
Area
 • Total
1,928 sq mi (4,990 km2)
 • Land1,921 sq mi (4,980 km2)
 • Water7.1 sq mi (18 km2)  0.4%
Population
 (2020)
 • Total
90,046
 • Estimate 
(2022)
93,696 Increase
 • Density47/sq mi (18/km2)
Time zoneUTC−7 (Mountain)
 • Summer (DST)UTC−6 (MDT)
Congressional district2nd
Websitewww.twinfallscounty.org

Twin Falls County is a county in the south central part of the U.S. state of Idaho. As of the 2020 census, the population was 90,046,[1] making it the fifth-most populous county in Idaho. The county seat and largest city is Twin Falls.[2] Twin Falls County is part of the Twin Falls, ID Twin Falls Metropolitan Statistical Area.

Prior to the 1860s, the Twin Falls County area was an unorganized part of Shoshone lands, then as part of the Oregon Country. The area was first organized as part of the original Owyhee County in 1864 as part of Idaho Territory. In 1879 it was partitioned away from Owyhee County to form part of Cassia County. The county is named for a split waterfall on the Snake River of the same name. The Snake River is the county's northern boundary.

Even after Idaho became a state in 1890, the Twin Falls area was very sparsely populated and without significant settlements. That changed after the city of Twin Falls was founded in 1904,[3] and Milner Dam was completed in 1905. Most of the county's other towns were established during this period as well. In response to local government needs for these new communities, which were as much as 80 miles (130 km) away from Cassia County's seat at Albion, Twin Falls County was created by the Idaho Legislature on February 21, 1907.[4]

Geography

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According to the United States Census Bureau, the county has a total area of 1,928 square miles (4,990 km2), of which 1,921 square miles (4,980 km2) is land and 7.1 square miles (18 km2) (0.4%) is water.[5]

Adjacent counties

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Major highways

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National protected areas

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Demographics

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Historical population
CensusPop.Note%±
191013,543—
192028,398109.7%
193029,8285.0%
194036,40322.0%
195040,97912.6%
196041,8422.1%
197041,807−0.1%
198052,92726.6%
199053,5801.2%
200064,28420.0%
201077,23020.1%
202090,04616.6%
2023 (est.)95,156[6]5.7%
U.S. Decennial Census[7]
1790–1960,[8] 1900–1990,[9]
1990–2000,[10] 2010–2020,[1]

2010 census

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As of the 2010 census, there were 77,230 people, 28,760 households, and 19,954 families living in the county.[11] The population density was 40.2 inhabitants per square mile (15.5/km2). There were 31,072 housing units at an average density of 16.2 per square mile (6.3/km2).[12] The racial makeup of the county was 88.9% white, 1.2% Asian, 0.8% American Indian, 0.4% black or African American, 0.1% Pacific islander, 6.3% from other races, and 2.3% from two or more races. Those of Hispanic or Latino origin made up 13.7% of the population.[11] In terms of ancestry, 20.2% were German, 14.5% were English, 10.8% were Irish, and 7.0% were American.[13]

Of the 28,760 households, 35.4% had children under the age of 18 living with them, 54.1% were married couples living together, 10.5% had a female householder with no husband present, 30.6% were non-families, and 24.3% of all households were made up of individuals. The average household size was 2.65 and the average family size was 3.16. The median age was 34.4 years.[11]

The median income for a household in the county was $42,455 and the median income for a family was $49,188. Males had a median income of $35,777 versus $26,257 for females. The per capita income for the county was $19,892. About 10.6% of families and 13.0% of the population were below the poverty line, including 16.9% of those under age 18 and 10.7% of those age 65 or over.[14]

2000 census

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As of the 2000 census, there were 64,284 people, 23,853 households, and 16,959 families living in the county. The population density was 33 inhabitants per square mile (13/km2). There were 25,595 housing units at an average density of 13 per square mile (5.0/km2). The racial makeup of the county was 92.47% White, 0.19% Black or African American, 0.71% Native American, 0.76% Asian, 0.08% Pacific Islander, 3.77% from other races, and 2.02% from two or more races. 9.37% of the population were Hispanic or Latino of any race. 17.9% were of German, 17.7% English, 10.9% American and 7.3% Irish ancestry.

There were 23,853 households, out of which 34.70% had children under the age of 18 living with them, 58.00% were married couples living together, 9.20% had a female householder with no husband present, and 28.90% were non-families. 23.60% of all households were made up of individuals, and 10.40% had someone living alone who was 65 years of age or older. The average household size was 2.64 and the average family size was 3.13.

In the county, the population was spread out, with 27.90% under the age of 18, 10.40% from 18 to 24, 26.00% from 25 to 44, 21.50% from 45 to 64, and 14.30% who were 65 years of age or older. The median age was 35 years. For every 100 females, there were 96.50 males. For every 100 females age 18 and over, there were 93.70 males.

The median income for a household in the county was $34,506, and the median income for a family was $39,886. Males had a median income of $30,058 versus $20,825 for females. The per capita income for the county was $16,678. About 9.10% of families and 12.70% of the population were below the poverty line, including 16.00% of those under age 18 and 9.30% of those age 65 or over.

Communities

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Cities

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Unincorporated communities

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Politics

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Twin Falls County leans heavily Republican; it has not voted for a Democratic presidential nominee since 1936, and even in the Democratic landslide of 1964 Barry Goldwater still carried Twin Falls by 20 percentage points.

United States presidential election results for Twin Falls County, Idaho[15]
Year Republican Democratic Third party(ies)
No.  % No.  % No.  %
2024 27,304 73.04% 9,064 24.25% 1,015 2.72%
2020 25,897 70.93% 9,391 25.72% 1,224 3.35%
2016 19,828 66.37% 6,233 20.86% 3,813 12.76%
2012 19,773 69.70% 7,541 26.58% 1,055 3.72%
2008 19,032 66.52% 8,621 30.13% 960 3.36%
2004 19,672 74.42% 6,458 24.43% 305 1.15%
2000 15,794 70.10% 5,777 25.64% 959 4.26%
1996 12,393 54.13% 6,826 29.81% 3,677 16.06%
1992 10,335 43.97% 6,593 28.05% 6,575 27.98%
1988 13,243 63.87% 7,078 34.14% 413 1.99%
1984 16,974 77.97% 4,567 20.98% 230 1.06%
1980 17,425 73.50% 4,835 20.39% 1,448 6.11%
1976 12,659 65.82% 6,085 31.64% 489 2.54%
1972 13,075 73.98% 3,344 18.92% 1,254 7.10%
1968 11,564 62.94% 4,001 21.78% 2,808 15.28%
1964 11,518 60.13% 7,638 39.87% 0 0.00%
1960 12,171 62.15% 7,413 37.85% 0 0.00%
1956 12,097 68.10% 5,666 31.90% 0 0.00%
1952 14,471 76.07% 4,548 23.91% 4 0.02%
1948 7,833 55.71% 6,019 42.81% 209 1.49%
1944 7,946 56.29% 6,128 43.41% 42 0.30%
1940 9,031 55.23% 7,286 44.56% 34 0.21%
1936 4,966 38.71% 7,476 58.28% 386 3.01%
1932 4,928 42.05% 6,395 54.57% 396 3.38%
1928 6,791 72.72% 2,471 26.46% 76 0.81%
1924 4,630 51.04% 1,641 18.09% 2,800 30.87%
1920 5,894 67.16% 2,882 32.84% 0 0.00%
1916 3,083 40.03% 3,974 51.60% 644 8.36%
1912 1,074 20.08% 1,741 32.55% 2,533 47.36%
1908 1,757 55.64% 1,051 33.28% 350 11.08%

Education

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School districts include:[16]

The county is in the catchment area, and the taxation zone, for College of Southern Idaho.[17]

See also

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Notes

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References

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  1. ^ a b "State & County QuickFacts". United States Census Bureau. Retrieved January 16, 2024.
  2. ^ "Find a County". National Association of Counties. Retrieved June 7, 2011.
  3. ^ Hayes, Anna Hansen (April 19, 1962). "Water turned desert into a Magic Valley". Lewiston Morning Tribune. (Idaho). p. 9, section 2.
  4. ^ Idaho.gov - Twin Falls County Archived September 25, 2009, at the Wayback Machine accessed May 29, 2009
  5. ^ "US Gazetteer files: 2010, 2000, and 1990". United States Census Bureau. February 12, 2011. Retrieved April 23, 2011.
  6. ^ "Annual Estimates of the Resident Population for Counties: April 1, 2020 to July 1, 2023". United States Census Bureau. Retrieved March 31, 2024.
  7. ^ "U.S. Decennial Census". United States Census Bureau. Retrieved July 1, 2014.
  8. ^ "Historical Census Browser". University of Virginia Library. Retrieved July 1, 2014.
  9. ^ "Population of Counties by Decennial Census: 1900 to 1990". United States Census Bureau. Retrieved July 1, 2014.
  10. ^ "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 July 1, 2014.
  11. ^ a b c "DP-1 Profile of General Population and Housing Characteristics: 2010 Demographic Profile Data". United States Census Bureau. Archived from the original on February 13, 2020. Retrieved January 9, 2016.
  12. ^ "Population, Housing Units, Area, and Density: 2010 - County". United States Census Bureau. Archived from the original on February 13, 2020. Retrieved January 9, 2016.
  13. ^ "DP02 SELECTED SOCIAL CHARACTERISTICS IN THE UNITED STATES – 2006-2010 American Community Survey 5-Year Estimates". United States Census Bureau. Archived from the original on February 13, 2020. Retrieved January 9, 2016.
  14. ^ "DP03 SELECTED ECONOMIC CHARACTERISTICS – 2006-2010 American Community Survey 5-Year Estimates". United States Census Bureau. Archived from the original on February 13, 2020. Retrieved January 9, 2016.
  15. ^ Leip, David. "Dave Leip's Atlas of U.S. Presidential Elections". uselectionatlas.org. Retrieved April 4, 2018.
  16. ^ "2020 CENSUS - SCHOOL DISTRICT REFERENCE MAP: Twin Falls County, ID" (PDF). U.S. Census Bureau. Retrieved March 12, 2024. - Text list
  17. ^ "Community Colleges" (PDF). Legislative Budget Book. Idaho Legislature. 2016. p. 1-81 (PDF p. 3/9). - See area 1 in: "TITLE 33 EDUCATION CHAPTER 21 JUNIOR COLLEGES". Idaho Legislature. Retrieved March 12, 2024.
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42°21′N 114°40′W / 42.35°N 114.66°W / 42.35; -114.66

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