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{{short description|County in South Dakota, United States}}
{{Use American English|date=June 2025}}
{{Use mdy dates|date=April 2024}}
{{Infobox U.S. county
| county = Bennett County
| state = South Dakota
| ex image = Inland Theater (Martin, SD) from S 1.JPG
| ex image size = 300px
| ex image cap = [[Art Deco]] style [[Inland Theater]] at Martin SD.
| type = [[County (United States)|County]]
| flag =
| seal =
| logo =
| coordinates = {{coord|43|11|12.883|N|101|40|37.851|W|region:US-SD_type:county|display=inline}}
| founded = June 3, 1909 (created)<br/>April 27, 1912 (organized)
| named for = [[John E. Bennett (judge)|John E. Bennett]] or [[Granville G. Bennett]]
| seat wl = Martin
| largest city wl = Martin
| area_total_sq_mi = 1190.451
| area_land_sq_mi = 1184.642
| area_water_sq_mi = 5.809
| area percentage = 0.5%
| population_as_of = 2020
| population_total = 3381
| pop_est_as_of = 2024
| population_est = 3289 {{decrease}}
| density_sq_mi = 2.788
| time zone = Mountain
| district = At-large
| website =
}}
'''Bennett County''' is a [[County (United States)|county]] in the [[U.S. state]] of [[South Dakota]]. As of the [[2020 United States census|2020 census]], the population was 3,381.<ref name="2020 Census (City)">{{cite web|title=Explore Census Data |url=https://data.census.gov/profile/Bennett_County,_South_Dakota?g=050XX00US46007 |publisher=[[United States Census Bureau]] |access-date=March 20, 2025}}</ref> Its [[county seat]] is [[Martin, South Dakota|Martin]].<ref>{{cite web|title=Find a County |url=https://ce.naco.org/?find=true |publisher=[[National Association of Counties]] |access-date=March 20, 2025}}</ref> Bennett County was removed from the Pine Ridge Reservation by an act of Congress in 1911, much of Bennett County however is still held in trust by the Reservation.<ref>{{Cite web|title=''Suzanne R. Schaeffer, Assistant Solicitor, Environment, Land and Minerals Branch, Division of Indian Affairs'' |url=http://villageearth.org/wp-content/uploads/2012/07/Resp_UO_SpiritLake_PineRidge_Rosebud-1.pdf |access-date=July 31, 2012 |archive-date=October 19, 2015 |archive-url=https://web.archive.org/web/20151019103857/http://villageearth.org/wp-content/uploads/2012/07/Resp_UO_SpiritLake_PineRidge_Rosebud-1.pdf |url-status=live}}</ref> To the east is the [[Rosebud Indian Reservation]], where dwell the ''[[Brulé|Sicangu Oyate]]'', also known the Upper Brulé Sioux Nation and the Rosebud Sioux Tribe (RST), a branch of the [[Lakota people]].
The North American [[continental pole of inaccessibility]] is in Bennett County, located {{convert|1650|km|mi|abbr=on}} from the nearest coastline, between [[Allen, South Dakota|Allen]] and [[Kyle, South Dakota|Kyle]] ([[Oglala Lakota County, South Dakota|Oglala Lakota County]]) at {{Coord|43.36|N|101.97|W|name=Pole of Inaccessibility North America}}.<ref>{{Cite journal |last=Garcia-Castellanos |first=D. |last2=U. Lombardo |year=2007 |title=Poles of Inaccessibility: A Calculation Algorithm for the Remotest Places on Earth |url=http://cuba.ija.csic.es/~danielgc/papers/Garcia-Castellanos,%20Lombardo,%202007,%20SGJ.pdf |url-status=dead |journal=[[Scottish Geographical Journal]] |volume=123 |issue=3 |pages=227–233 |doi=10.1080/14702540801897809 |s2cid=55876083 |archive-url=https://web.archive.org/web/20140629230429/http://cuba.ija.csic.es/~danielgc/papers/Garcia-Castellanos,%20Lombardo,%202007,%20SGJ.pdf |archive-date=June 29, 2014}} () - p. 231: "Region: America, North Longitude (deg. E.) -101.97 Latitude (deg. N.) 43.36 distance (km) 1639 uncertainty (km) +14 Altitude (m) 1030"</ref>
Historically, ranching and dry land farming have been the chief agricultural pursuits possible given climate and soil conditions.
[[File:Pine Ridge Reservation SD.png|thumb|255x255px|Bennett County lies entirely within the boundaries of the [[Pine Ridge Indian Reservation]].]]
==History==
This land has for centuries been the traditional territory of the [[Oglala Lakota]], also known as the [[Sioux]]; it has been part of their legally defined territory since the treaty of 1851 and has remained within its legal boundaries through various other Treaties and Acts that reduced their land base to the current boundaries of the [[Pine Ridge Indian Reservation]] when the reservation was created by the Act of March 2, 1889 (25 Stat. 888).<ref>{{Cite web |title=Bennett County, South Dakota v. United States, 394 F.2d 8 | Casetext Search + Citator |url=https://casetext.com/case/bennett-county-south-dakota-v-united-states?sort=relevance&resultsNav=false |access-date=October 2, 2018 |archive-date=October 3, 2018 |archive-url=https://web.archive.org/web/20181003100811/https://casetext.com/case/bennett-county-south-dakota-v-united-states?sort=relevance&resultsNav=false |url-status=dead }}</ref> Despite its reservation status, most of the county was opened for settlement by the Act of May 27, 1910, where the US Congress "authorized and directed the Secretary of Interior to sell and dispose of all that portion of the Pine Ridge Indian Reservation, in the State of South Dakota, lying and being in Bennett County". Open settlement was ended by a Secretarial Order of June 10, 1936, which restored "to tribal ownership of all lands which are now, or may hereafter be, classified as undisposed-of surplus opened lands of the Pine Ridge Reservation...."<ref>[https://books.google.com/books?id=la1LmoyRUlEC&dq=secretarial+order+June+10%2C+1936+Pine+Ridge+Reservation&pg=PA1399] ''Secretarial Order''</ref> The allotment process left the county's landownership a "[[Checkerboarding (land)|checkerboard]]" mixture of Indian trust lands and state and private lands.<ref>{{Cite web |last=Ecoffey |first=Brandon |date=August 24, 2016 |title=Lakota Country Times: County seeks compensation for trust lands |url=https://www.indianz.com/News/2016/08/24/lakota-country-times-county-seeks-compen.asp |publisher=Lakota Country Times |via=Indianz |access-date=November 22, 2022 |archive-date=November 22, 2022 |archive-url=https://web.archive.org/web/20221122061207/https://www.indianz.com/News/2016/08/24/lakota-country-times-county-seeks-compen.asp |url-status=live}}</ref>
The county was created in 1909, with land partitioned from [[Fall River County, South Dakota|Fall River County]].<ref>{{Cite web |date=2006 |title=Dakota Territory, South Dakota, and North Dakota: Individual County Chronologies |url=http://publications.newberry.org/ahcbp/documents/DAKs_Individual_County_Chronologies.htm |url-status=dead |archive-url=https://web.archive.org/web/20180402202102/http://publications.newberry.org/ahcbp/documents/DAKs_Individual_County_Chronologies.htm |archive-date=April 2, 2018 |access-date=March 28, 2015 |website=Dakota Territory Atlas of Historical County Boundaries |publisher=The [[Newberry Library]]}}</ref> On April 27, 1912, the county's first board of commissioners was elected. In November 1912, residents chose the town of [[Martin, South Dakota|Martin]] as the county seat.
==Dispute Over Reservation Status==
A 1975 decision of the Eighth Circuit Court decided that Bennett County was not to be considered part of the Pine Ridge Reservation. However, the federal government participated in that lawsuit only as amicus, and did not consider itself bound by that decision because it did not participate in the litigation. The United States was a party in United States v. Bennett County, 394 F.2d 8 (8th Cir. 1968), in which the State of South Dakota had to obtain permission from the Department of the Interior in order to fix roads or condemn property in Bennett County, consistent with the property's reservation status.<ref>[https://archive.org/details/RespUOSpiritLakePineRidgeRosebud1/page/n1 ''Suzanne R. Schaeffer, Assistant Solicitor, Environment, Land and Minerals Branch, Division of Indian Affairs'']</ref> Putnam v. United States 248 F.2d 292 (8th Cir. 1957) ruled that "Bennett County is within the Pine Ridge Indian Reservation created by the Act of Congress of March 2, 1889, 25 Stat. 888." The Federal Government recognizes Bennett County as being entirely within the Pine Ridge Indian Reservation. In 2004, in State of South Dakota v. Acting Great Plains Regional Director, Bureau of Indian Affairs Docket Number IBIA3-24-A the State of South Dakota argued against an Oglala Sioux Tribal member's application to the BIA to return a 10-acre tract of land in Bennett County into Federal Trust arguing it was outside of the Boundary of the Pine Ridge Reservation. The judge ruled in favor of the applicant and Bureau of Indian Affairs' affirming that Bennett County is indeed within the boundaries of the Reservation.<ref>{{Cite web |date=October 3, 2018 |title=State of South Dakota and Bennett County SD v. Acting Great Plains Regional Director BIA |url=https://www.oha.doi.gov/ibia/IbiaDecisions/39ibia/39ibia301.pdf |url-status=live |archive-url=https://ghostarchive.org/archive/20221009/https://www.oha.doi.gov/ibia/IbiaDecisions/39ibia/39ibia301.pdf |archive-date=October 9, 2022 |website=oha.doi.gov}}</ref>
==Native/Non-Native Relations==
Both Lakota and European Americans have worked during recent decades to improve relations between the groups, which residents commonly refer to as full-bloods, mixed-bloods (usually both identified as Native American) and whites. Intermarriage continues between the groups and cooperation has been increasing.<ref>[http://www.denverpost.com/Stories/0,1413,36%257E53%257E1095196%257E,00.html Gwen Florio, "Indians Show Political Clout; Natives Throng Polls in 'White' SD County"] {{Webarchive|url=https://web.archive.org/web/20081116003953/http://www.denverpost.com/Stories/0%2C1413%2C36~53~1095196~%2C00.html |date=November 16, 2008 }}, ''The Denver Post,'' January 8, 2003, accessed June 8, 2011</ref> In the mid-1990s, residents co-sponsored a concurrent [[powwow]] and [[rodeo]] in the county. By the 1990s, people of Native American descent comprised the majority of county residents. In the 2000 Census, 5.7% of the people in Bennett County identified as [[mixed-race]] Native American-European American (more Lakota socially identify as having mixed-race ancestry). This is the highest percentage of any county within US boundaries, except northeastern Oklahoma and [[White Earth Indian Reservation]] in northwestern Minnesota.<ref>[http://www.h-net.org/reviews/showrev.php?id=9101 Sterling Fluharty, "Review of Wagoner, Paula L., '' 'They Treated Us Just Like Indians': The Worlds of Bennett County SD''] {{Webarchive|url=https://web.archive.org/web/20121017181128/http://www.h-net.org/reviews/showrev.php?id=9101 |date=October 17, 2012}}", ''H-AmIndian, H-Net Reviews'', March 2004, accessed June 8, 2011</ref>
Bennett County was in national news in 2014 when the township of Swett was put up for sale. The township's two residents listed six acres and all property in the township for sale for nearly $400,000.<ref>{{Cite web|title=Buy a town: Swett, South Dakota for sale |url=https://www.usatoday.com/story/news/nation-now/2014/06/29/south-dakota-swett-for-sale/11728823/ |access-date=June 30, 2014 |publisher=Usatoday.com |archive-date=June 30, 2014 |archive-url=https://web.archive.org/web/20140630053142/http://www.usatoday.com/story/news/nation-now/2014/06/29/south-dakota-swett-for-sale/11728823/ |url-status=live}}</ref> By 2016 the price had been reduced to $250,000, still with no takers.<ref>[https://www.mnn.com/your-home/at-home/blogs/swett-deal-south-dakota-town-hits-market-250k-saloon-included ''Saloon Included''] (accessed January 30, 2019)</ref>
==Geography==
Bennett County lies on the south line of South Dakota. Its south boundary line abuts the north boundary line of the state of [[Nebraska]]. The Little White River flows eastward through the lower central part of the county.<ref>[https://www.google.com/maps/place/Bennett+County,+SD/@43.2285967,-101.6862348,10.98z/data=!4m5!3m4!1s0x877ecacca77b3d9f:0xe1de53cfdc0d88a7!8m2!3d43.1223577!4d-101.6157773 ''Bennett County SD'' Google Maps (accessed January 30, 2019)]</ref> The highest point on the county's terrain is the SW corner, at {{convert|3,497|ft|m|abbr=on}} ASL. Its lowest point is along the north boundary line, at {{convert|2,703|ft|m|abbr=on}} ASL.<ref>{{Cite web|title="Find an Altitude" Google Maps (accessed January 30, 2019) |url=https://www.daftlogic.com/sandbox-google-maps-find-altitude.htm |url-status=dead |archive-url=https://web.archive.org/web/20190521043409/https://www.daftlogic.com/sandbox-google-maps-find-altitude.htm |archive-date=May 21, 2019 |access-date=January 30, 2019}}</ref> The terrain consists of rolling hills cut with drainage gullies, sloping to the east-northeast.
According to the [[United States Census Bureau]], the county has a total area of {{convert|1190.451|sqmi}}, of which {{convert|1184.642|sqmi}} is land and {{convert|5.809|sqmi}} (0.5%) is water.<ref>{{Cite web|title=2024 County Gazetteer Files – South Dakota|url=https://www2.census.gov/geo/docs/maps-data/data/gazetteer/2024_Gazetteer/2024_gaz_counties_46.txt|publisher=[[United States Census Bureau]]|access-date=March 20, 2025}}</ref> It is the 23rd largest county in South Dakota by total area.
The eastern portion of South Dakota's counties (48 of 66) observe [[Central Time Zone|Central Time]]; the western counties (18 of 66) observe [[Mountain Time Zone|Mountain Time]]. Bennett County is the easternmost of the SD counties to observe Mountain Time.<ref>{{Cite web |url=http://www.timebie.com/us/south_dakota.php |title=Map of Time Zone Line through South Dakota (accessed January 30, 2019) |access-date=January 30, 2019 |archive-date=January 31, 2019 |archive-url=https://web.archive.org/web/20190131093610/http://www.timebie.com/us/south_dakota.php |url-status=live}}</ref>
===Major highways===
* [[Image:US 18.svg|20px]] [[U.S. Route 18 in South Dakota|U.S. Highway 18]]
* [[
===Adjacent counties===
{{div col|colwidth=33em}}
* [[Jackson County, South Dakota|Jackson County]] - north
* [[Mellette County, South Dakota|Mellette County]] – northeast (boundary of [[Central Time Zone|Central Time]])
* [[Todd County, South Dakota|Todd County]] - east (boundary of Central Time)
* [[Cherry County, Nebraska]] - south (eastern part of county observes Central Time)
* [[Sheridan County, Nebraska]] – southwest
* [[Oglala Lakota County, South Dakota|Oglala Lakota County]] - west
{{div col end}}
===Protected areas===
* [[Lacreek National Wildlife Refuge]]
* Little White River Recreation Area<ref>[https://www.google.com/maps/place/Little+White+River+Recreation+Area,+Martin,+SD+57551/@43.1636499,-101.5594717,15z/data=!3m1!4b1!4m13!1m7!3m6!1s0x877ecacca77b3d9f:0xe1de53cfdc0d88a7!2sBennett+County,+SD!3b1!8m2!3d43.1223577!4d-101.6157773!3m4!1s0x8779325e8b5987ab:0x1ae2f98038d11301!8m2!3d43.1635843!4d-101.5518044 ''Little White River Recreation Area, Martin SD'' Google Maps (accessed January 30, 2019)]</ref>
* Little White River State Game Production Area
* Todd State Game Production Area
==Demographics==
{{US Census population
|1910= 96
|1920= 1924
|1930= 4590
|1940= 3983
|1950= 3396
|1960= 3053
|1970= 3088
|1980= 3044
|1990= 3206
|2000= 3574
|2010= 3431
|2020= 3381
|estyear=2024
|estimate=3289
|estref=<ref name="USCensusEst2024">{{cite web|title=County Population Totals and Components of Change: 2020-2024 |url=https://www.census.gov/data/tables/time-series/demo/popest/2020s-counties-total.html |access-date=March 15, 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 20, 2014}}</ref><br>1790–1960<ref>{{cite web|title=Historical Census Browser |url=http://mapserver.lib.virginia.edu |publisher=University of Virginia Library |url-status=live |date=2007 |access-date=July 20, 2014 |archive-url=https://web.archive.org/web/20091212224028/http://mapserver.lib.virginia.edu/ |archive-date=December 12, 2009}}</ref> 1900–1990<ref>{{cite web|last=Forstall |first=Richard L. |title=Population of Counties by Decennial Census: 1900 to 1990 |url=https://www.census.gov/population/cencounts/sd190090.txt |publisher=United States Census Bureau |url-status=live |date=March 27, 1995 |access-date=July 20, 2014 |archive-url=https://web.archive.org/web/19990219135447/http://www.census.gov/population/cencounts/sd190090.txt |archive-date=February 19, 1999}}</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 |url-status=live |publisher=United States Census Bureau |access-date=July 20, 2014 |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}}</ref> 2010–2020<ref name="QF"/>
}}
As of the third quarter of 2024, the median home value in Bennett County was $143,900.<ref>{{Cite web|title=County Median Home Price|url=https://www.nar.realtor/research-and-statistics/housing-statistics/county-median-home-prices-and-monthly-mortgage-payment|publisher=[[National Association of Realtors]]|access-date=March 20, 2025}}</ref>
As of the 2023 [[American Community Survey]], there are 1,024 estimated households in Bennett County with an average of 3.23 persons per household. The county has a median household income of $44,569. Approximately 27.7% of the county's population lives at or below the [[Poverty in the United States|poverty line]]. Bennett County has an estimated 51.1% employment rate, with 20.3% of the population holding a bachelor's degree or higher and 86.9% holding a high school diploma.<ref name="QF">{{Cite web|title=U.S. Census Bureau QuickFacts: Bennett County, South Dakota |url=https://www.census.gov/quickfacts/fact/table/bennettcountysouthdakota/PST045224 |access-date=March 20, 2025 |website=www.census.gov |language=en}}</ref>
The top five reported ancestries (people were allowed to report up to two ancestries, thus the figures will generally add to more than 100%) were English (88.3%), Spanish (0.1%), Indo-European (0.0%), Asian and Pacific Islander (0.9%), and Other (10.7%).
The median age in the county was 28.8 years.
'''Bennett County, South Dakota – racial and ethnic composition'''<br><small>{{nobold|''Note: the US Census treats Hispanic/Latino as an ethnic category. This table excludes Latinos from the racial categories and assigns them to a separate category. Hispanics/Latinos may be of any race.''}}</small>
{| class="wikitable sortable collapsible" style="font-size: 95%;"
|-
! Race / ethnicity <small>(''NH = non-Hispanic'')</small>
! Pop. 1980<ref name=1980CensusScope>{{Cite web|title=Bennett County, South Dakota — Population by Race |url=https://censusscope.org/us/s46/c7/chart_race.html |publisher=CensusScope |access-date=March 20, 2025}}</ref> !! Pop. 1990<ref name=1990CensusScope>{{Cite web|title=Bennett County, South Dakota — Population by Race |url=https://censusscope.org/us/s46/c7/chart_race.html |publisher=CensusScope |access-date=March 20, 2025}}</ref> !! Pop. 2000<ref name=2000CensusP004>{{Cite web|title=P004: Hispanic or Latino, and Not Hispanic or Latino by Race – 2000: DEC Summary File 1 – Bennett County, South Dakota |url=https://data.census.gov/table/DECENNIALSF12000.P004?g=050XX00US46007 |publisher=[[United States Census Bureau]] |access-date=March 20, 2025}}</ref> !! Pop. 2010<ref name=2010CensusP2>{{Cite web|title=P2: Hispanic or Latino, and Not Hispanic or Latino by Race – 2010: DEC Redistricting Data (PL 94-171) – Bennett County, South Dakota |url=https://data.census.gov/table?q=p2&g=050XX00US46007&tid=DECENNIALPL2010.P2 |publisher=[[United States Census Bureau]] |access-date=March 20, 2025}}</ref> !! {{partial|Pop. 2020}}<ref name=2020CensusP2>{{Cite web|title=P2: Hispanic or Latino, and Not Hispanic or Latino by Race – 2020: DEC Redistricting Data (PL 94-171) – Bennett County, South Dakota |url=https://data.census.gov/cedsci/table?q=p2&g=050XX00US46007&tid=DECENNIALPL2020.P2 |publisher=[[United States Census Bureau]] |access-date=March 20, 2025}}</ref>
|-
| [[Non-Hispanic or Latino whites|White]] alone (NH)
| 1,852<br>(60.84%) || 1,698<br>(52.96%) || 1,449<br>(40.54%) || 1,141<br>(33.26%) || style='background: #ffffe6; |997<br>(29.49%)
|-
| [[Non-Hispanic or Latino African Americans|Black or African American]] alone (NH)
| 0<br>(0.00%) || 8<br>(0.25%) || 10<br>(0.28%) || 3<br>(0.09%) || style='background: #ffffe6; |7<br>(0.21%)
|- style='background: #F4A460;
| '''[[Native Americans in the United States|Native American]] or [[Alaska Native]] alone (NH)'''
| '''1,174<br>(38.57%)''' || '''1,462<br>(45.60%)''' || '''1,826<br>(51.09%)''' || '''2,072<br>(60.39%)''' || '''2,060<br>(60.93%)'''
|-
| [[Asian Americans|Asian]] alone (NH)
| 0<br>(0.00%) || 2<br>(0.06%) || 2<br>(0.06%) || 13<br>(0.38%) || style='background: #ffffe6; |7<br>(0.21%)
|-
| [[Pacific Islander Americans|Pacific Islander]] alone (NH)
| — || — || 5<br>(0.14%) || 3<br>(0.09%) || style='background: #ffffe6; |0<br>(0.00%)
|-
| [[Race and ethnicity in the United States census|Other race]] alone (NH)
| 1<br>(0.03%) || 1<br>(0.03%) || 1<br>(0.03%) || 2<br>(0.06%) || style='background: #ffffe6; |2<br>(0.06%)
|-
| [[Multiracial Americans|Mixed race or multiracial]] (NH)
| — || — || 209<br>(5.85%) || 130<br>(3.79%) || style='background: #ffffe6; |221<br>(6.54%)
|-
| [[Hispanic and Latino Americans|Hispanic or Latino]] (any race)
| 17<br>(0.56%) || 35<br>(1.09%) || 72<br>(2.01%) || 67<br>(1.95%) || style='background: #ffffe6; |87<br>(2.57%)
|-
| '''Total'''
| '''3,044<br>(100.00%)''' || '''3,206<br>(100.00%)''' || '''3,574<br>(100.00%)''' || '''3,431<br>(100.00%)''' || style='background: #ffffe6; |'''3,381<br>(100.00%)'''
|}
===2020 census===
As of the [[2020 United States census|2020 census]], there were 3,381 people, 1,085 households, and 737 families residing in the county.<ref>{{Cite web|title=US Census Bureau, Table P16: Household Type |url=https://data.census.gov/table?q=Bennett%20County,%20South%20Dakota%20p16&y=2020 |access-date=March 20, 2025 |publisher=United States Census Bureau}}</ref> The [[population density]] was {{convert|2.9|PD/sqmi|PD/km2|1}}. There were 1,177 housing units at an average density of {{convert|1.0|/sqmi|/km2|1}}. The racial makeup of the county was 29.9% [[White (U.S. Census)|White]], 0.21% [[African American (U.S. Census)|African American]], '''{{font color|#8B4513|61.90%}}''' '''[[Native American (U.S. Census)|{{font color|#8B4513|Native American}}]]''', 0.21% [[Asian (U.S. Census)|Asian]], 0.00% [[Race (U.S. Census)|Pacific Islander]], 0.12% from some other races and 7.66% from two or more races. [[Hispanic and Latino Americans|Hispanic or Latino]] people of any race were 2.57% of the population.<ref>{{Cite web|title=How many people live in Bennett County, South Dakota |url=https://data.usatoday.com/census/total-population/total-population-change/Bennett-county-south-dakota/050-46007/ |access-date=March 20, 2025 |publisher=USA Today}}</ref>
===2010 census===
As of the [[2010 United States census|2010 census]], there were 3,431 people, 1,090 households, and 766 families in the county. The population density was {{convert|2.9|PD/sqmi}}. There were 1,263 housing units at an average density of {{convert|1.1|/sqmi}}. The racial makeup of the county was 33.72% [[White (U.S. Census)|White]], 0.12% [[African American (U.S. Census)|African American]], '''{{font color|#8B4513|61.47%}}''' '''[[Native American (U.S. Census)|{{font color|#8B4513|Native American}}]]''', 0.38% [[Asian (U.S. Census)|Asian]], 0.09% [[Race (U.S. Census)|Pacific Islander]], 0.20% from some other races and 4.02% from two or more races. [[Hispanic and Latino Americans|Hispanic or Latino]] people of any race were 1.95% of the population. In terms of ancestry, 20.9% were [[Germans|German]], 5.1% were [[Swedes|Swedish]], and 1.9% were [[Americans|American]].
Of the 1,090 households, 42.9% had children under the age of 18 living with them, 40.3% were married couples living together, 20.1% had a female householder with no husband present, 29.7% were non-families, and 24.3% of all households were made up of individuals. The average household size was 3.11 and the average family size was 3.73. The median age was 28.7 years.
The median income for a household in the county was $32,841 and the median income for a family was $38,487. Males had a median income of $40,158 versus $31,406 for females. The per capita income for the county was $16,153. About 24.3% of families and 32.1% of the population were below the [[poverty line]], including 42.3% of those under age 18 and 15.4% of those age 65 or over.
==Communities==
===Cities===
* [[Martin, South Dakota|Martin]] (county seat)
===Census-designated places===
* [[Allen, South Dakota|Allen]]
===Unincorporated communities===
{{div col|colwidth=33em}}
* [[Blackpipe, South Dakota|Blackpipe]]
* [[Harrington, South Dakota|Harrington]]
* [[Tuthill, South Dakota|Tuthill]]
* [[Vetal, South Dakota|Vetal]]
{{div col end}}
===Former communities===
* [[Swett, South Dakota|Swett]]
==Politics==
Bennett is a solidly Republican county in Presidential elections. It has not been carried by a Democratic Presidential nominee since [[Lyndon Johnson]]’s landslide of 1964, although vis-à-vis most [[West River (South Dakota)|West River]] counties it has a sizeable Democratic vote and a substantial Native American population. Both [[John Kerry]] in 2004 and [[Barack Obama]] in 2008 came within five percentage points of carrying the county.
{{PresHead|place=Bennett County, South Dakota|whig=no|source1=<ref>{{Cite web |last=Leip |first=David |title=Atlas of US Presidential Elections |url=http://uselectionatlas.org/RESULTS |access-date=April 13, 2018 |website=uselectionatlas.org |archive-date=March 23, 2018 |archive-url=https://web.archive.org/web/20180323225526/https://uselectionatlas.org/RESULTS/ |url-status=live}}</ref>}}
<!-- PresRow should be {{PresRow|Year|Winning party|GOP/Whig vote #|Dem vote #|3rd party vote #|State}} -->
{{PresRow|2024|Republican|676|389|23|South Dakota}}
{{PresRow|2020|Republican|694|466|23|South Dakota}}
{{PresRow|2016|Republican|666|412|71|South Dakota}}
{{PresRow|2012|Republican|626|548|29|South Dakota}}
{{PresRow|2008|Republican|614|557|37|South Dakota}}
{{PresRow|2004|Republican|833|759|38|South Dakota}}
{{PresRow|2000|Republican|712|377|27|South Dakota}}
{{PresRow|1996|Republican|539|507|99|South Dakota}}
{{PresRow|1992|Republican|556|413|228|South Dakota}}
{{PresRow|1988|Republican|663|579|20|South Dakota}}
{{PresRow|1984|Republican|856|453|7|South Dakota}}
{{PresRow|1980|Republican|919|350|55|South Dakota}}
{{PresRow|1976|Republican|610|481|20|South Dakota}}
{{PresRow|1972|Republican|808|476|2|South Dakota}}
{{PresRow|1968|Republican|665|457|111|South Dakota}}
{{PresRow|1964|Democratic|624|775|0|South Dakota}}
{{PresRow|1960|Republican|779|607|0|South Dakota}}
{{PresRow|1956|Republican|746|685|0|South Dakota}}
{{PresRow|1952|Republican|873|516|0|South Dakota}}
{{PresRow|1948|Democratic|477|758|17|South Dakota}}
{{PresRow|1944|Democratic|494|566|0|South Dakota}}
{{PresRow|1940|Republican|915|860|0|South Dakota}}
{{PresRow|1936|Democratic|530|807|12|South Dakota}}
{{PresRow|1932|Democratic|453|1,410|45|South Dakota}}
{{PresRow|1928|Republican|766|544|7|South Dakota}}
{{PresRow|1924|Republican|444|102|232|South Dakota}}
{{PresRow|1920|Republican|220|199|33|South Dakota}}
{{PresRow|1916|Democratic|67|222|8|South Dakota}}
{{PresFoot|1912|Democratic|0|179|74|South Dakota}}
==Education==
The [[Bennett County School District]] serves all of Bennett County.<ref>{{Cite web |title=2020 CENSUS - SCHOOL DISTRICT REFERENCE MAP: Bennett County, SD |url=https://www2.census.gov/geo/maps/DC2020/PL20/st46_sd/schooldistrict_maps/c46007_bennett/DC20SD_C46007.pdf |url-status=live |archive-url=https://ghostarchive.org/archive/20221009/https://www2.census.gov/geo/maps/DC2020/PL20/st46_sd/schooldistrict_maps/c46007_bennett/DC20SD_C46007.pdf |archive-date=October 9, 2022 |access-date=August 11, 2021 |publisher=[[United States Census Bureau]]}}</ref>
The [[Bureau of Indian Education]] (BIE) is affiliated with the American Horse School, a [[K-8 school]] in Allen operated by a tribal group.<ref>{{Cite web |title=American Horse School |url=https://www.bie.edu/schools/directory/american-horse-school |access-date=August 11, 2021 |publisher=[[Bureau of Indian Education]] |archive-date=June 6, 2022 |archive-url=https://web.archive.org/web/20220606164458/https://www.bie.edu/schools/directory/american-horse-school |url-status=live}}</ref>
==See also==
* [[National Register of Historic Places listings in Bennett County, South Dakota|National Register of Historic Places listing]]
==References==
{{Reflist|30em}}
{{Geographic Location
|Centre = Bennett County, South Dakota
|North = [[Jackson County, South Dakota|Jackson County]]
|Northeast = [[Mellette County, South Dakota|Mellette County]]
|East = [[Todd County, South Dakota|Todd County]]
|South = [[Cherry County, Nebraska]]
|Southwest = [[Sheridan County, Nebraska]]
|West = [[Oglala Lakota County, South Dakota|Oglala Lakota County]]
}}
{{Bennett County, South Dakota}}
{{South Dakota}}
{{Authority control}}
{{Coord|43.18|-101.66|display=title|type:adm2nd_region:US-SD_source:UScensus1990}}
[[Category:Bennett County, South Dakota| ]]
[[Category:1912 establishments in South Dakota]]
[[Category:Populated places established in 1912]]
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