Editing Black Hawk County, Iowa

{{short description|County in Iowa, United States}}
{{Use mdy dates|date=April 2024}}
{{Use American English|date=July 2022}}
{{Infobox U.S. county
 | county               = Black Hawk County
 | ex image             = Black Hawk County Courthouse in Waterloo IA.JPG
 | ex image size        = 250px
 | ex image cap         = [[Black Hawk County Courthouse (Iowa)|Black Hawk County Courthouse]] in Waterloo
 | state                = Iowa
 | logo                 = File:Black_Hawk_County_Logo.png
 | founded year         = 1843
 | founded date         = 
 | seat wl              = Waterloo
 | largest city wl      = Waterloo
 | area_total_sq_mi     = 573
 | area_land_sq_mi      = 566
 | area_water_sq_mi     = 6.9
 | area percentage      = 1.2
 | population_as_of     = 2020
 | population_total     = 131144
 | population_density_sq_mi = auto
 | time zone            = Central
 | footnotes            = 
 | web                  = https://www.blackhawkcounty.iowa.gov/
 | district             = 2nd
 | named for            = [[Black Hawk (Sauk leader)|Black Hawk]]
}}

'''Black Hawk County''' is a [[County (United States)|county]] in the northeastern part of the [[U.S. state]] of [[Iowa]]. As of the [[2020 United States census|2020 census]], the population was 131,144,<ref name=cen2020>{{cite web |title=2020 Census State Redistricting Data |url=https://www2.census.gov/programs-surveys/decennial/2020/data/01-Redistricting_File--PL_94-171/Iowa/ |website=census.gov |publisher=United states Census Bureau |access-date=August 12, 2021}}</ref> making it Iowa's fifth-most populous county. The [[county seat]] is [[Waterloo, Iowa|Waterloo]].<ref name="GR6">{{cite web|url=http://www.naco.org/Counties/Pages/FindACounty.aspx |access-date=June 7, 2011 |title=Find a County |publisher=National Association of Counties |url-status=dead |archive-url=https://web.archive.org/web/20110531210815/http://www.naco.org/Counties/Pages/FindACounty.aspx |archive-date=May 31, 2011}}</ref>

Black Hawk County is part of the [[Waterloo – Cedar Falls metropolitan area]].<ref>{{cite web|url=https://www.whitehouse.gov/omb/bulletins/fy2006/b06-01.pdf|title=Update of Statistical Area Definitions and Guidance on Their Uses|access-date=July 21, 2006|author=United States Office of Management and Budget|author-link=United States Office of Management and Budget|pages=5, 36|url-status=dead|archive-url=https://web.archive.org/web/20060514003222/http://www.whitehouse.gov/omb/bulletins/fy2006/b06-01.pdf <!-- Bot retrieved archive --> |archive-date=May 14, 2006}}</ref>

==History==
Black Hawk County was formed on February 17, 1853, from sections of Buchanan County. It was named after [[Black Hawk (Sauk leader)|Black Hawk]], a [[Sauk people|Sauk]] leader during the 1832 [[Black Hawk War]].<ref>[http://www.co.black-hawk.ia.us/about.html Black Hawk County Online<!-- Bot generated title -->] {{webarchive |url=https://web.archive.org/web/20071013204926/http://www.co.black-hawk.ia.us/about.html |date=October 13, 2007 }}</ref>

==Geography==
According to the [[U.S. Census Bureau]], the county has an area of {{convert|573|sqmi}}, of which {{convert|566|sqmi}} is land and {{convert|6.9|sqmi}} (1.2%) 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>

The [[Cedar River (Iowa River)|Cedar River]] roughly divides the county in half from the northwest to the southeast corner. The land is mostly level since much of it is on the river's [[flood plain]].

===Major highways===
{{div col}}
*[[File:I-380.svg|x20px]] [[Interstate 380 (Iowa)|Interstate 380]]
*[[File:US 20.svg|x20px]] [[U.S. Route 20 in Iowa|U.S. Highway 20]]
*[[File:US 63.svg|x20px]] [[U.S. Route 63 in Iowa|U.S. Highway 63]]
*[[File:US 218.svg|x20px]] [[U.S. Route 218|U.S. Highway 218]]
*[[File:Elongated circle 21.svg|x20px]] [[Iowa Highway 21]]
*[[File:Elongated circle 27.svg|x20px]] [[Iowa Highway 27]]
*[[File:Elongated circle 57.svg|x20px]] [[Iowa Highway 57]]
*[[File:Elongated circle 58.svg|x20px]] [[Iowa Highway 58]]
*[[File:Elongated circle 175.svg|x20px]] [[Iowa Highway 175]]
*[[File:Elongated circle 281.svg|x20px]] [[Iowa Highway 281]]
{{div col end}}

===Transit===
* [[Metropolitan Transit Authority of Black Hawk County]]
* [[List of intercity bus stops in Iowa]]

===Adjacent counties===
*[[Bremer County, Iowa|Bremer County]] (north)
*[[Buchanan County, Iowa|Buchanan County]] (east)
*[[Benton County, Iowa|Benton County]] (southeast)
*[[Tama County, Iowa|Tama County]] (southwest)
*[[Grundy County, Iowa|Grundy County]] (west)
*[[Butler County, Iowa|Butler County]] (northwest)
*[[Fayette County, Iowa|Fayette County]]  (northeast)

==Demographics==
{{US Census population
|1850= 135
|1860= 8244
|1870= 21706
|1880= 23913
|1890= 24219
|1900= 32399
|1910= 44865
|1920= 56570
|1930= 69146
|1940= 79946
|1950= 100448
|1960= 122482
|1970= 132916
|1980= 137961
|1990= 123798
|2000= 128012
|2010= 131090
|2020= 131144
|estyear=2023
|estimate=130471
|estref=<ref name="USCensusEst2023">{{cite web|url=https://www.census.gov/programs-surveys/popest/data/tables.html|title=Annual Estimates of the Resident Population for Counties: April 1, 2020 to July 1, 2023|publisher=United States Census Bureau|access-date=April 2, 2024}}</ref>
|align-fn=center
|footnote=U.S. Decennial Census<ref>{{cite web|url=https://www.census.gov/programs-surveys/decennial-census.html|title=U.S. Decennial Census|publisher=United States Census Bureau|access-date=July 13, 2014}}</ref><br />1790-1960<ref>{{cite web|url=http://mapserver.lib.virginia.edu|title=Historical Census Browser|publisher=University of Virginia Library|access-date=July 13, 2014}}</ref> 1900-1990<ref>{{cite web|url=https://www.census.gov/population/cencounts/ia190090.txt|title=Population of Counties by Decennial Census: 1900 to 1990|publisher=United States Census Bureau|access-date=July 13, 2014}}</ref><br />1990-2000<ref>{{cite web|url=https://www.census.gov/population/www/cen2000/briefs/phc-t4/tables/tab02.pdf|title=Census 2000 PHC-T-4. Ranking Tables for Counties: 1990 and 2000|publisher=United States Census Bureau|access-date=July 13, 2014}}</ref> 2010-2019<ref name="QF">{{cite web|title=State & County QuickFacts|url=http://quickfacts.census.gov/qfd/states/19/19013.html|publisher=United States Census Bureau|access-date=July 13, 2014|archive-url=https://web.archive.org/web/20110607063810/http://quickfacts.census.gov/qfd/states/19/19013.html|archive-date=June 7, 2011|url-status=dead}}</ref>
}}
[[File:BlackHawkCountyIowaPop2020.png|thumb|right|Population of Black Hawk County from US census data]]

===2020 census===
The 2020 census recorded a population of 131,144 in the county, with a population density of {{Pop density|131144|571.430778|sqmi|km2}}. 94.55% of the population reported being of one race. 73.49% were White, 10.43% were Black, 4.92% were Hispanic, 0.32% were Native American, 2.61% were Asian, 0.65% were Native Hawaiian or Pacific Islander and 7.57% were some other race or more than one race. There were 58,559 housing units of which 54,223 were occupied.<ref name=cen2020/>

===2010 census===
The 2010 census recorded a population of 131,090 in the county, with a population density of {{Pop density|131090|567|sqmi|km2}}. There were 55,887 housing units, of which 52,470 were occupied.<ref name="USCB">{{cite web|url=http://factfinder.census.gov/faces/tableservices/jsf/pages/productview.xhtml?pid=DEC_10_PL_GCTPL2.ST05&prodType=table|archive-url=https://web.archive.org/web/20150929225050/http://factfinder.census.gov/faces/tableservices/jsf/pages/productview.xhtml?pid=DEC_10_PL_GCTPL2.ST05&prodType=table|url-status=dead|archive-date=September 29, 2015|title=Population and Housing Occupancy Status: 2010 - State &ndash; County  |publisher=[[United States Census Bureau]] American FactFinder|access-date=March 6, 2011}}</ref>

[[File:BlackHawkCountyIA2022PopPyr.png|thumb|left|2022 US Census [[population pyramid]] for Black Hawk County from [[American Community Survey|ACS]] 5-year estimates]]

===2000 census===
At the [[2000 United States Census|2000 census]] there were 128,012 people, 49,683 households, and 31,946 families in the county. The population density was {{convert|226|PD/sqmi|PD/km2|sp=us|adj=off}}. There were 51,759 housing units at an average density of {{convert|91|/mi2|/km2}}. The [[Race and ethnicity in the United States Census#2000 census|racial makeup]] of the county was 88.42% [[Race (United States Census)|White]], 7.95% [[Race (United States Census)|Black]] or [[Race (United States Census)|African American]], 0.18% [[Race (United States Census)|Native American]], 0.98% [[Race (United States Census)|Asian]], 0.04% [[Race (United States Census)|Pacific Islander]], 0.93% from other races, and 1.49% from two or more races. 1.84%.<ref name="GR2">{{cite web |url=https://www.census.gov |publisher=[[United States Census Bureau]] |access-date=January 31, 2008 |title=U.S. Census website }}</ref> were [[Race (United States Census)|Hispanic]] or [[Race (United States Census)|Latino]] of any race.

Of the 49,683 households 29.50% had children under the age of 18 living with them, 50.20% were married couples living together, 10.80% had a female householder with no husband present, and 35.70% were non-families. 27.10% of households were one person and 10.90% were one person aged 65 or older. The average household size was 2.45 and the average family size was 2.97.

Age spread: 23.10% under the age of 18, 15.70% from 18 to 24, 25.20% from 25 to 44, 22.00% from 45 to 64, and 14.00% 65 or older. The median age was 34 years. For every 100 females, there were 92.30 males. For every 100 females age 18 and over, there were 88.80 males.

The median household income was $37,266 and the median family income was $47,398. Males had a median income of $33,138 versus $23,394 for females. The per capita income for the county was $18,885. About 7.90% of families and 13.10% of the population were below the [[poverty line]], including 14.40% of those under age 18 and 8.90% of those age 65 or over.

==Communities==
===Cities===
{{Div col|colwidth=15em}}
*[[Cedar Falls, Iowa|Cedar Falls]]
*[[Dunkerton, Iowa|Dunkerton]]
*[[Elk Run Heights, Iowa|Elk Run Heights]]
*[[Evansdale, Iowa|Evansdale]]
*[[Gilbertville, Iowa|Gilbertville]]
*[[Hudson, Iowa|Hudson]]
*[[Janesville, Iowa|Janesville]]
*[[Jesup, Iowa|Jesup]]
*[[La Porte City, Iowa|La Porte City]]
*[[Raymond, Iowa|Raymond]]
*[[Waterloo, Iowa|Waterloo]]
{{div col end}}

===Census-designated place===
*[[Washburn, Iowa|Washburn]]

===Other unincorporated communities===
*[[Blessing, Iowa|Blessing]]
*[[Dewar, Iowa|Dewar]]
*[[Eagle Center, Iowa|Eagle Center]]
*[[Finchford, Iowa|Finchford]]
*[[Glasgow, Iowa|Glasgow]]
*[[Voorhies, Iowa|Voorhies]]

===Townships===
Black Hawk County is divided into seventeen [[Township (United States)|townships]]:
{{Div col|colwidth=15em}}
* [[Barclay Township, Black Hawk County, Iowa|Barclay]]
* [[Bennington Township, Black Hawk County, Iowa|Bennington]]
* [[Big Creek Township, Black Hawk County, Iowa|Big Creek]]
* [[Black Hawk Township, Black Hawk County, Iowa|Black Hawk]]
* [[Cedar Township, Black Hawk County, Iowa|Cedar]]
* [[Cedar Falls Township, Black Hawk County, Iowa|Cedar Falls]]
* [[Eagle Township, Black Hawk County, Iowa|Eagle]]
* [[East Waterloo Township, Black Hawk County, Iowa|East Waterloo]]
* [[Fox Township, Black Hawk County, Iowa|Fox]]
* [[Lester Township, Black Hawk County, Iowa|Lester]]
* [[Lincoln Township, Black Hawk County, Iowa|Lincoln]]
* [[Mount Vernon Township, Black Hawk County, Iowa|Mount Vernon]]
* [[Orange Township, Black Hawk County, Iowa|Orange]]
* [[Poyner Township, Black Hawk County, Iowa|Poyner]]
* [[Spring Creek Township, Black Hawk County, Iowa|Spring Creek]]
* [[Union Township, Black Hawk County, Iowa|Union]]
* [[Washington Township, Black Hawk County, Iowa|Washington]]
{{div col end}}

===Population ranking===
The population ranking of the following table is based on the [[2020 United States census|2020 census]] of Black Hawk County.<ref name=cen2020/>

'''†''' ''county seat''

{| class="wikitable sortable"
|-
!Rank
!City/Town/etc.
!Municipal type
!Population (2020 Census)

|- style="background-color:#FFFACD;"
| 1
|'''†''' '''[[Waterloo, Iowa|Waterloo]]''' 
| City
| 67,314
|- style="background-color:#FFFACD;"
| 2
|'''[[Cedar Falls, Iowa|Cedar Falls]]''' 
| City
| 40,713
|- style="background-color:#FFFACD;"
| 3
|'''[[Evansdale, Iowa|Evansdale]]''' 
| City
| 4,561
|- style="background-color:#FFFACD;"
| 4
|'''[[Hudson, Iowa|Hudson]]''' 
| City
| 2,546
|- style="background-color:#FFFACD;"
| 5
|'''[[Jesup, Iowa|Jesup]]''' (''mostly in [[Buchanan County, Iowa|Buchanan County]]'')
| City
| 193 (2508 total)
|- style="background-color:#FFFACD;"
| 6
|'''[[La Porte City, Iowa|La Porte City]]''' 
| City
| 2,284
|- style="background-color:#FFFACD;"
| 7
|'''[[Elk Run Heights, Iowa|Elk Run Heights]]''' 
| City
| 1,069
|- style="background-color:#FFFACD;"
| 8
|'''[[Janesville, Iowa|Janesville]]''' (''mostly in [[Bremer County, Iowa|Bremer County]]'')
| City
| 115 (1034 total)
|- style="background-color:#F0FFF0;"
| 9
|'''[[Washburn, Iowa|Washburn]]''' 
| CDP
| 870
|- style="background-color:#FFFACD;"
| 10
|'''[[Dunkerton, Iowa|Dunkerton]]''' 
| City
| 842
|- style="background-color:#FFFACD;"
| 11
|'''[[Gilbertville, Iowa|Gilbertville]]''' 
| City
| 794
|- style="background-color:#FFFACD;"
| 12
|'''[[Raymond, Iowa|Raymond]]''' 
| City
| 759
|}

==Politics==
Black Hawk County has been a Democratic stronghold in Iowa since the late 1980s. In presidential politics, it is one of the most Democratic counties in Iowa. As the state swung hard to the right in the 2010s and 2020s, Black Hawk County—as a major population center, in accordance with most other population centers nationwide—has remained staunchly Democratic. In 2016, however, Donald Trump became the first Republican since 1984 to hold the Democratic candidate's margin to under 10 percent, and in 2024 Trump came the closest to winning the county since 1984.
{{PresHead|place=Black Hawk County, Iowa|source=<ref>{{cite web|url=http://uselectionatlas.org/RESULTS|title=Dave Leip's Atlas of U.S. Presidential Elections|first=David|last=Leip|website=uselectionatlas.org|access-date=April 10, 2018}}</ref>}}
<!-- PresRow should be {{PresRow|Year|Winning party|GOP vote #|Dem vote #|3rd party vote #|State}} -->
{{PresRow|2024|Democratic|30,572|31,299|1,035|Iowa}}
{{PresRow|2020|Democratic|29,640|35,647|1,306|Iowa}}
{{PresRow|2016|Democratic|27,476|32,233|4,696|Iowa}}
{{PresRow|2012|Democratic|26,235|39,821|1,085|Iowa}}
{{PresRow|2008|Democratic|24,662|39,184|941|Iowa}}
{{PresRow|2004|Democratic|28,046|35,392|469|Iowa}}
{{PresRow|2000|Democratic|23,468|30,112|1,505|Iowa}}
{{PresRow|1996|Democratic|19,322|29,651|4,136|Iowa}}
{{PresRow|1992|Democratic|21,398|29,584|10,568|Iowa}}
{{PresRow|1988|Democratic|24,112|31,657|402|Iowa}}
{{PresRow|1984|Republican|32,262|31,467|504|Iowa}}
{{PresRow|1980|Republican|29,627|27,443|6,652|Iowa}}
{{PresRow|1976|Republican|30,994|29,508|1,213|Iowa}}
{{PresRow|1972|Republican|30,929|21,721|1,132|Iowa}}
{{PresRow|1968|Republican|25,594|21,097|2,863|Iowa}}
{{PresRow|1964|Democratic|19,744|30,716|56|Iowa}}
{{PresRow|1960|Republican|28,435|24,078|38|Iowa}}
{{PresRow|1956|Republican|28,250|20,403|66|Iowa}}
{{PresRow|1952|Republican|28,671|17,360|203|Iowa}}
{{PresRow|1948|Democratic|16,041|19,603|586|Iowa}}
{{PresRow|1944|Democratic|15,687|16,593|154|Iowa}}
{{PresRow|1940|Democratic|17,132|17,305|95|Iowa}}
{{PresRow|1936|Democratic|13,666|16,793|1,222|Iowa}}
{{PresRow|1932|Republican|14,746|14,660|359|Iowa}}
{{PresRow|1928|Republican|19,409|8,467|113|Iowa}}
{{PresRow|1924|Republican|15,813|2,981|5,427|Iowa}}
{{PresRow|1920|Republican|16,920|4,000|1,181|Iowa}}
{{PresRow|1916|Republican|6,742|4,270|349|Iowa}}
{{PresRow|1912|Progressive|1,601|3,702|5,346|Iowa}}
{{PresRow|1908|Republican|5,437|3,127|548|Iowa}}
{{PresRow|1904|Republican|5,236|1,861|730|Iowa}}
{{PresRow|1900|Republican|5,010|2,512|259|Iowa}}
{{PresRow|1896|Republican|4,643|2,167|220|Iowa}}
{{PresRow|1892|Republican|3,483|2,544|75|Iowa}}
{{PresRow|1888|Republican|3,106|2,127|76|Iowa}}
{{PresRow|1884|Republican|3,153|2,084|0|Iowa}}
{{PresFoot|1880|Republican|3,014|1,558|96|Iowa}}

==See also==
{{Portal|Iowa}}
*[[National Register of Historic Places listings in Black Hawk County, Iowa]]
*[[Impact of the 2019–20 coronavirus pandemic on the meat industry in the United States]]

==References==
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{{Reflist|30em}}

==External links==
{{Commons}}<!-- for current and future use if material is uploaded -->
*[http://www.co.black-hawk.ia.us/ Black Hawk County government's website]

{{Geographic Location
|Centre    = Black Hawk County, Iowa
|North     = [[Bremer County, Iowa|Bremer County]]
|Northeast = [[Fayette County, Iowa|Fayette County]]
|East      = [[Buchanan County, Iowa|Buchanan County]]
|Southeast = [[Benton County, Iowa|Benton County]]
|South     = 
|Southwest = [[Tama County, Iowa|Tama County]]
|West      = [[Grundy County, Iowa|Grundy County]]
|Northwest = [[Butler County, Iowa|Butler County]]
}}
{{Black Hawk County, Iowa}}
{{Iowa}}
{{authority control}}
{{Coord|42|28|08|N|92|18|19|W|region:US-IA_type:adm2nd_source:dewiki|display=title}}

[[Category:Black Hawk County, Iowa| ]]
[[Category:Waterloo – Cedar Falls metropolitan area]]
[[Category:1843 establishments in Iowa Territory]]
[[Category:Populated places established in 1843]]