Editing Twin Falls County, Idaho

{{short description|County in Idaho, United States}}
{{Use mdy dates|date=April 2024}}
{{Infobox U.S. county
 | county               = Twin Falls County
 | state                = Idaho
 | ex image             = Oregon Trail Wayside 2016-10-13 2336.jpg
 | ex image size        = 300px
 | ex image cap         = [[Oregon Trail]] Wayside in [[Hagerman Fossil Beds National Monument]]
 | seal                 = Twinfallscounty.png
 | founded year         = 1907
 | founded date         = February 21
 | seat wl              = Twin Falls
 | largest city wl      = Twin Falls
 | area_total_sq_mi     = 1928
 | area_land_sq_mi      = 1921
 | area_water_sq_mi     = 7.1
 | area percentage      = 0.4
 | population_as_of     = 2020
 | population_total     = 90046
 | pop_est_as_of        = 2024
 | population_est       = 96509 {{increase}}
 | population_density_sq_mi = 47
 | time zone            = Mountain
 | district             = 2nd
 | footnotes            = 
 | web                  = www.twinfallscounty.org
 | named for            = [[Snake River]] [[Twin Falls (Idaho)|waterfall]] 
}}
'''Twin Falls County''' is a [[county (United States)|county]] in the south central part of the [[U.S. state]] of [[Idaho]]. As of the [[2020 United States census|2020 census]], the population was 90,046,<ref name="QF">{{cite web|title=State & County QuickFacts|url=https://www.census.gov/quickfacts/fact/table/twinfallscountyidaho/PST045222|publisher=United States Census Bureau|access-date=January 16, 2024}}</ref> making it the fifth-most populous county in Idaho. The [[county seat]] and largest city is [[Twin Falls, Idaho|Twin Falls]].<ref name="GR6">{{cite web |title=Find a County |url=http://www.naco.org/Counties/Pages/FindACounty.aspx |publisher=National Association of Counties |access-date=June 7, 2011}}</ref> Twin Falls County is part of the Twin Falls, ID [[Twin Falls, Idaho metropolitan area|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, Idaho|Owyhee County]] in 1864 as part of [[Idaho Territory]]. In 1879 it was partitioned away from Owyhee County to form part of [[Cassia County, Idaho|Cassia County]]. The county is named for a split [[waterfall]] on the [[Snake River]] of the [[Twin Falls (Idaho)|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,<ref name=lmttfc>{{cite news |url=https://news.google.com/newspapers?id=Rr5eAAAAIBAJ&sjid=LTEMAAAAIBAJ&pg=4626%2C2931476 |work=Lewiston Morning Tribune |location=(Idaho) |last=Hayes |first=Anna Hansen |title=Water turned desert into a Magic Valley|date=April 19, 1962 |page=9, section 2}}</ref> 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 {{convert|80|mi|km}} away from Cassia County's seat at [[Albion, Idaho|Albion]], Twin Falls County was created by the Idaho Legislature on February 21, 1907.<ref>[http://www.state.id.us/aboutidaho/county/twinfalls.html Idaho.gov - Twin Falls County] {{webarchive|url=https://web.archive.org/web/20090925041034/http://www.state.id.us/aboutidaho/county/twinfalls.html|date=September 25, 2009}} accessed May 29, 2009</ref>

==Geography==
According to the [[United States Census Bureau]], the county has a total area of {{convert|1928|sqmi}}, of which {{convert|1921|sqmi}} is land and {{convert|7.1|sqmi}} (0.4%) is water.<ref name="GR1">{{cite web|url=https://www.census.gov/geographies/reference-files/time-series/geo/gazetteer-files.html|publisher=[[United States Census Bureau]]|access-date=April 23, 2011|date=February 12, 2011|title=US Gazetteer files: 2010, 2000, and 1990}}</ref>

===Adjacent counties===
*[[Gooding County, Idaho|Gooding County]] - north
*[[Jerome County, Idaho|Jerome County]] - northeast
*[[Cassia County, Idaho|Cassia County]] - east
*[[Elko County, Nevada|Elko County]], [[Nevada]] - south/Pacific Time Border
*[[Owyhee County, Idaho|Owyhee County]] - west
*[[Elmore County, Idaho|Elmore County]] - northwest

===Major highways===
*[[Image:US 30.svg|25px]] [[U.S. Route 30 in Idaho|US 30]]
*[[Image:US 93.svg|25px]] [[U.S. Route 93 in Idaho|US 93]]
*[[Image:Idaho 50.svg|25px]] [[Idaho State Highway 50|SH-50]]
*[[Image:Idaho 74.svg|25px]] [[Idaho State Highway 74|SH-74]]

===National protected areas===
* [[Hagerman Fossil Beds National Monument]]
* [[Sawtooth National Forest]] (part)

==Demographics==
{{US Census population
|1910= 13543
|1920= 28398
|1930= 29828
|1940= 36403
|1950= 40979
|1960= 41842
|1970= 41807
|1980= 52927
|1990= 53580
|2000= 64284
|2010= 77230
|2020= 90046
|estyear=2024
|estimate=96509
|estref=<ref name="USCensusEst2024">{{cite web|url=https://www.census.gov/data/tables/time-series/demo/popest/2020s-counties-total.html|title=County Population Totals and Components of Change: 2020-2024|publisher=United States Census Bureau|access-date=May 17, 2025}}</ref>
|align-fn=center
|footnote=U.S. Decennial Census<ref>{{cite web|title=U.S. Decennial Census |url=https://www.census.gov/programs-surveys/decennial-census.html |publisher=United States Census Bureau |access-date=July 1, 2014}}</ref><br />1790–1960,<ref>{{cite web |title=Historical Census Browser |url=http://mapserver.lib.virginia.edu |publisher=University of Virginia Library |access-date=July 1, 2014}}</ref> 1900–1990,<ref>{{cite web |title=Population of Counties by Decennial Census: 1900 to 1990 |url=https://www.census.gov/population/cencounts/id190090.txt |publisher=United States Census Bureau |access-date=July 1, 2014}}</ref><br />1990–2000,<ref>{{cite web |title=Census 2000 PHC-T-4. Ranking Tables for Counties: 1990 and 2000 |url=https://www.census.gov/population/www/cen2000/briefs/phc-t4/tables/tab02.pdf |archive-url=https://web.archive.org/web/20100327165705/http://www.census.gov/population/www/cen2000/briefs/phc-t4/tables/tab02.pdf |archive-date=March 27, 2010 |url-status=live |publisher=United States Census Bureau |access-date=July 1, 2014}}</ref> 2010–2020,<ref name="QF"/>
}}

===2010 census===
As of the [[2010 United States census|2010 census]], there were 77,230 people, 28,760 households, and 19,954 families living in the county.<ref name="census-dp1">{{cite web
  |url=http://factfinder.census.gov/bkmk/table/1.0/en/DEC/10_DP/DPDP1/0500000US16083
  |title=DP-1 Profile of General Population and Housing Characteristics: 2010 Demographic Profile Data
  |access-date=January 9, 2016
|publisher=[[United States Census Bureau]]
  |archive-url=https://archive.today/20200213021400/http://factfinder.census.gov/bkmk/table/1.0/en/DEC/10_DP/DPDP1/0500000US16083
  |archive-date=February 13, 2020
|url-status=dead
  }}</ref> The population density was {{convert|40.2|PD/sqmi}}. There were 31,072 housing units at an average density of {{convert|16.2|/sqmi}}.<ref name="census-density">{{cite web
  |url=http://factfinder.census.gov/bkmk/table/1.0/en/DEC/10_SF1/GCTPH1.CY07/0500000US16083
  |access-date=January 9, 2016
|title=Population, Housing Units, Area, and Density: 2010 - County
  |publisher=[[United States Census Bureau]]
  |archive-url=https://archive.today/20200213193155/http://factfinder.census.gov/bkmk/table/1.0/en/DEC/10_SF1/GCTPH1.CY07/0500000US16083
  |archive-date=February 13, 2020
|url-status=dead
  }}</ref> 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.<ref name="census-dp1"/> In terms of ancestry, 20.2% were [[Germans|German]], 14.5% were [[English people|English]], 10.8% were [[Irish people|Irish]], and 7.0% were [[Americans|American]].<ref name="census-dp2">{{cite web
  |url=http://factfinder.census.gov/bkmk/table/1.0/en/ACS/10_5YR/DP02/0500000US16083
  |title=DP02 SELECTED SOCIAL CHARACTERISTICS IN THE UNITED STATES – 2006-2010 American Community Survey 5-Year Estimates
  |access-date=January 9, 2016
|publisher=[[United States Census Bureau]]
  |archive-url=https://archive.today/20200213013334/http://factfinder.census.gov/bkmk/table/1.0/en/ACS/10_5YR/DP02/0500000US16083
  |archive-date=February 13, 2020
|url-status=dead
  }}</ref>

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.<ref name="census-dp1"/>

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.<ref name="census-dp3">{{cite web
  |url=http://factfinder.census.gov/bkmk/table/1.0/en/ACS/10_5YR/DP03/0500000US16083
  |title=DP03 SELECTED ECONOMIC CHARACTERISTICS – 2006-2010 American Community Survey 5-Year Estimates
  |access-date=January 9, 2016
|publisher=[[United States Census Bureau]]
  |archive-url=https://archive.today/20200213031330/http://factfinder.census.gov/bkmk/table/1.0/en/ACS/10_5YR/DP03/0500000US16083
  |archive-date=February 13, 2020
|url-status=dead
  }}</ref>

===2000 census===
As of the [[2000 United States census|2000 census]], there were 64,284 people, 23,853 households, and 16,959 families living in the county. The population density was {{convert|33|PD/sqmi|PD/km2|sp=us|adj=off}}. There were 25,595 housing units at an average density of {{convert|13|/mi2|/km2}}. The racial makeup of the county was 92.47% [[Race (United States Census)|White]], 0.19% [[Race (United States Census)|Black]] or [[Race (United States Census)|African American]], 0.71% [[Race (United States Census)|Native American]], 0.76% [[Race (United States Census)|Asian]], 0.08% [[Race (United States Census)|Pacific Islander]], 3.77% from [[Race (United States Census)|other races]], and 2.02% from two or more races. 9.37% of the population were [[Race (United States Census)|Hispanic]] or [[Race (United States Census)|Latino]] of any race. 17.9% were of [[Germans|German]], 17.7% [[English people|English]], 10.9% [[United States|American]] and 7.3% [[Irish people|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 [[Marriage|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==
{{div col}}

===Cities===
* [[Buhl, Idaho|Buhl]]
* [[Castleford, Idaho|Castleford]]
* [[Filer, Idaho|Filer]]
* [[Hansen, Idaho|Hansen]]
* [[Hollister, Idaho|Hollister]]
* [[Kimberly, Idaho|Kimberly]]
* [[Murtaugh, Idaho|Murtaugh]]
* [[Twin Falls, Idaho|Twin Falls]]

===Unincorporated communities===
* [[Amsterdam, Idaho|Amsterdam]]
* [[Artesian City, Idaho|Artesian City]]
* [[Caldron Linn (Idaho)|Caldron Linn]]
* [[Clover, Idaho|Clover]]
* [[Curry, Idaho|Curry]]
* [[Deep Creek, Idaho|Deep Creek]]
* [[Fairview, Twin Falls County, Idaho|Fairview]]
* [[Godwin, Idaho|Godwin]]
* [[Knull, Idaho|Knull]]
* [[Peavey, Idaho|Peavey]]
* [[Milner Dam]] (Extends into) [[Cassia County, Idaho|Cassia County]] and [[Jerome County, Idaho|Jerome County]]
* [[Rock Creek, Idaho|Rock Creek]]
* [[Rogerson, Idaho|Rogerson]]
{{div col end}}

==Politics==
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.
{{PresHead|place=Twin Falls County, Idaho|source=<ref>{{Cite web|url=http://uselectionatlas.org/RESULTS|title=Dave Leip's Atlas of U.S. Presidential Elections|last=Leip|first=David|website=uselectionatlas.org|access-date=April 4, 2018}}</ref>}}
<!-- PresRow should be {{PresRow|Year|Winning party|GOP vote #|Dem vote #|3rd party vote #|State}} -->
{{PresRow|2024|Republican|27,304|9,064|1,015|Idaho}}
{{PresRow|2020|Republican|25,897|9,391|1,224|Idaho}}
{{PresRow|2016|Republican|19,828|6,233|3,813|Idaho}}
{{PresRow|2012|Republican|19,773|7,541|1,055|Idaho}}
{{PresRow|2008|Republican|19,032|8,621|960|Idaho}}
{{PresRow|2004|Republican|19,672|6,458|305|Idaho}}
{{PresRow|2000|Republican|15,794|5,777|959|Idaho}}
{{PresRow|1996|Republican|12,393|6,826|3,677|Idaho}}
{{PresRow|1992|Republican|10,335|6,593|6,575|Idaho}}
{{PresRow|1988|Republican|13,243|7,078|413|Idaho}}
{{PresRow|1984|Republican|16,974|4,567|230|Idaho}}
{{PresRow|1980|Republican|17,425|4,835|1,448|Idaho}}
{{PresRow|1976|Republican|12,659|6,085|489|Idaho}}
{{PresRow|1972|Republican|13,075|3,344|1,254|Idaho}}
{{PresRow|1968|Republican|11,564|4,001|2,808|Idaho}}
{{PresRow|1964|Republican|11,518|7,638|0|Idaho}}
{{PresRow|1960|Republican|12,171|7,413|0|Idaho}}
{{PresRow|1956|Republican|12,097|5,666|0|Idaho}}
{{PresRow|1952|Republican|14,471|4,548|4|Idaho}}
{{PresRow|1948|Republican|7,833|6,019|209|Idaho}}
{{PresRow|1944|Republican|7,946|6,128|42|Idaho}}
{{PresRow|1940|Republican|9,031|7,286|34|Idaho}}
{{PresRow|1936|Democratic|4,966|7,476|386|Idaho}}
{{PresRow|1932|Democratic|4,928|6,395|396|Idaho}}
{{PresRow|1928|Republican|6,791|2,471|76|Idaho}}
{{PresRow|1924|Republican|4,630|1,641|2,800|Idaho}}
{{PresRow|1920|Republican|5,894|2,882|0|Idaho}}
{{PresRow|1916|Democratic|3,083|3,974|644|Idaho}}
{{PresRow|1912|Democratic|1,074|1,741|2,533|Idaho}}
{{PresFoot|1908|Republican|1,757|1,051|350|Idaho}}

==Education==
School districts include:<ref>{{cite web|url=https://www2.census.gov/geo/maps/DC2020/PL20/st16_id/schooldistrict_maps/c16083_twin_falls/DC20SD_C16083.pdf|title=2020 CENSUS - SCHOOL DISTRICT REFERENCE MAP: Twin Falls County, ID|publisher=[[U.S. Census Bureau]]|access-date=March 12, 2024}} - [https://www2.census.gov/geo/maps/DC2020/PL20/st16_id/schooldistrict_maps/c16083_twin_falls/DC20SD_C16083_SD2MS.txt Text list]</ref>
* [[Bliss Joint School District 234]]
* [[Buhl Joint School District 412]]
* [[Cassia County Joint School District 151]]
* [[Castleford School District 417]]
* [[Filer School District 413]]
* [[Hagerman Joint School District 233]]
* [[Hansen School District 415]]
* [[Kimberly School District 414]]
* [[Murtaugh Joint School District 418]]
* [[Three Creek Joint Elementary School District 416]]
* [[Twin Falls School District 411]]

The county is in the catchment area, and the taxation zone, for [[College of Southern Idaho]].<ref>{{cite book|chapter-url=https://legislature.idaho.gov/wp-content/uploads/budget/publications/Legislative-Budget-Book/2016/1.Education/1-079.Community%20Colleges.pdf|chapter=Community Colleges|title=Legislative Budget Book|publisher=[[Idaho Legislature]]|year=2016|page=1-81 (PDF p. 3/9)}} - See area 1 in: {{cite web|url=https://legislature.idaho.gov/statutesrules/idstat/Title33/T33CH21/SECT33-2101/|title=TITLE 33 EDUCATION CHAPTER 21 JUNIOR COLLEGES|publisher=[[Idaho Legislature]]|access-date=March 12, 2024}}</ref>

==See also==
* [[National Register of Historic Places listings in Twin Falls County, Idaho]]

==Notes==
{{notelist}}

==References==
{{reflist|30em}}

==External links==
* [http://www.twinfallscounty.org County website]
* [http://twinfalls.idahoparcels.us County Parcel Map]

{{Geographic Location
|Centre    = Twin Falls County, Idaho
|North     = [[Gooding County, Idaho|Gooding County]]
|Northeast = [[Jerome County, Idaho|Jerome County]]
|East      = [[Cassia County, Idaho|Cassia County]]
|Southeast = 
|South     = [[Elko County, Nevada|Elko County]], [[Nevada]]
|Southwest = 
|West      = [[Owyhee County, Idaho|Owyhee County]]
|Northwest = [[Elmore County, Idaho|Elmore County]]
}} 
{{Twin Falls County, Idaho}}
{{Idaho}}
{{authority control}}
{{coord|42.35|-114.66|display=title|type:adm2nd_region:US-ID_source:UScensus1990}}

[[Category:Twin Falls County, Idaho| ]]
[[Category:Idaho counties]]
[[Category:1907 establishments in Idaho]]
[[Category:Populated places established in 1907]]
[[Category:Twin Falls, Idaho metropolitan area]]