Dakota County, Nebraska Information
|Dakota County, Nebraska|
Dakota County courthouse in Dakota City
Location within the U.S. state of Nebraska
Nebraska's location within the U.S.
|Founded||7 March 1855|
|Named for||Dakota people|
|Largest city||South Sioux City|
|• Total||267 sq mi (692 km2)|
|• Land||264 sq mi (684 km2)|
|• Water||3.2 sq mi (8 km2), 1.2%|
|• ( 2017)||20,186|
|• Density||76.5/sq mi (29.5/km2)|
|Time zone||Central: UTC−6/ −5|
In the Nebraska license plate system, Dakota County is represented by the prefix 70 (it had the 70th-largest number of vehicles registered in the county when the license plate system was established in 1922). In August 2009, the Dakota County Board of Commissioners reversed a decision to abandon this system for alphanumeric plates upon introduction of new license plates in 2011.  Douglas, Lancaster, and Sarpy Counties remain the only counties with alphanumeric plates in the state. 
Succeeding cultures of indigenous peoples lived along the Missouri River for millenia. By 1775, the Omaha people had migrated west of the Missouri, where they established a major settlement, Ton-wa-tonga, (the Big Village). It had some 1100 residents. From here, the Omaha controlled fur trading on the upper Missouri River with other tribes and with French-Canadian traders, often called voyageurs. The Omaha were the first of the Northern Plains tribes to have adopted an equestrian culture. 
Dakota County was formed by European-American settlers in 1855. They named it after the historic Dakota Sioux tribe, who were powerful in the area of Nebraska and South Dakota.  By this time, the Omaha were concentrated further south in what became the state of Nebraska.
Dakota County lies on the northeast line of the Nebraska state line. Its northeast boundary line abuts the southwest boundary lines of the states of South Dakota and Iowa, across the Missouri River. The county terrain consists of rolling prairies and bottom lands. 
According to the US Census Bureau, the county has an area of 267 square miles (690 km2), of which 264 square miles (680 km2) is land and 3.2 square miles (8.3 km2) (1.2%) is water.  It is the second-smallest county in Nebraska by area.
|US Decennial Census
1790-1960  1900-1990 
1990-2000  2010-2013 
As of the 2010 United States Census, there were 21,006 people and 7,314 households residing in the county. The racial makeup of the county was 85% White, 4.8% Black or African American, 4.1% Native American, 3.3% Asian, 0.6% Pacific Islander, and 2.2% from two or more races. 39.7% of the population were Hispanic or Latino of any race. Non-Hispanic Whites were 48.4% of the population.
As of the 2000 United States Census, there were 20,253 people, 7,095 households, and 5,087 families residing in the county. The population density was 77 people per square mile (30/km²). There were 7,528 housing units at an average density of 28 per square mile (11/km²). The racial makeup of the county was 78.84% White, 0.62% Black or African American, 1.86% Native American, 3.08% Asian, 0.06% Pacific Islander, 12.91% from other races, and 2.62% from two or more races. 22.62% of the population were Hispanic or Latino of any race. 28.0% were of German and 10.5% Irish ancestry.
There were 7,095 households out of which 39.90% had children under the age of 18 living with them, 54.60% were married couples living together, 11.90% had a female householder with no husband present, and 28.30% were non-families. 22.90% of all households were made up of individuals and 9.00% had someone living alone who was 65 years of age or older. The average household size was 2.81 and the average family size was 3.30.
The county population contained 30.50% under the age of 18, 10.10% from 18 to 24, 29.40% from 25 to 44, 20.10% from 45 to 64, and 9.90% who were 65 years of age or older. The median age was 31 years. For every 100 females, there were 99.70 males. For every 100 females age 18 and over, there were 97.10 males.
The median income for a household in the county was $38,834, and the median income for a family was $43,702. Males had a median income of $28,341 versus $22,035 for females. The per capita income for the county was $16,125. About 9.20% of families and 11.40% of the population were below the poverty line, including 14.60% of those under age 18 and 8.60% of those age 65 or over.
Dakota County voters have leaned Republican for several decades. From 1960 the county selected the Republican Party candidate in 80% of national elections, but the significant Hispanic population has led to the margins of victory not being as wide as most rural counties in the state.
- "State & County QuickFacts". US Census Bureau. Archived from the original on July 9, 2011. Retrieved October 24, 2014.
- "Find a County". National Association of Counties. Archived from the original on May 31, 2011. Retrieved 7 June 2011.
- Dakota County license plates to keep No.70 Sioux City Journal August 18, 2009
- Plate math: 70 follows 1, 2, 59 Archived 2012-07-12 at Archive.today Omaha World-Herald June 8, 2009
- Paulette W. Campbell, "Ancestral Bones: Reinterpreting the Past of the Omaha", Humanities, November/December 2002, Vol. 23/No. 6, accessed 26 August 2011
- "Dakota County, Nebraska" Archived 4 July 2008 at the Wayback Machine, National Association of County Executives, Retrieved on March 14, 2008.
- Ripley, George; Dana, Charles A., eds. (1879). The American Cyclopædia. .
- "2010 Census Gazetteer Files". US Census Bureau. August 22, 2012. Archived from the original on November 13, 2013. Retrieved December 6, 2014.
- "Population Estimates from US Census". Retrieved May 28, 2018.
- "US Decennial Census". US Census Bureau. Archived from the original on May 12, 2015. Retrieved December 6, 2014.
- "Historical Census Browser". University of Virginia Library. Retrieved December 6, 2014.
- "Population of Counties by Decennial Census: 1900 to 1990". US Census Bureau. Retrieved December 6, 2014.
- "Census 2000 PHC-T-4. Ranking Tables for Counties: 1990 and 2000" (PDF). US Census Bureau. Retrieved December 6, 2014.
- Election Results