Jefferson is a city in Union County,

South Dakota South Dakota (; Sioux language, Sioux: , ) is a U.S. state, state in the West North Central states, North Central region of the United States. It is also part of the Great Plains. South Dakota is named after the Dakota people, Dakota Sioux ...

, United States. The population was 475 at the 2020 census. It is part of the

Sioux City Sioux City () is a city in Woodbury and Plymouth counties in the U.S. state of Iowa. The population was 85,797 in the 2020 census, making it the fourth-most populous city in Iowa. The county seat of Woodbury County, Sioux City is the primar ...

, IA- NE-SD Metropolitan Statistical Area. Jefferson was founded in 1859. Every year the citizens of Jefferson and surrounding area celebrate the founding of Jefferson during "Jefferson Days", a festival that includes a movie in the park, a car show, fireworks and parade. The city has the name of President

Thomas Jefferson Thomas Jefferson (, 1743July 4, 1826) was an American Founding Fathers of the United States, Founding Father and the third president of the United States from 1801 to 1809. He was the primary author of the United States Declaration of Indepe ...

History

Jefferson was primarily settled by French-Canadians. By 1867 the town consisted of 25 or so French-Canadian families. During the winter of 1880–1, the town was ravaged by a smallpox epidemic, reported to have arrived in the area via Russian Mennonite emigrants en route to Yankton, in the Dakota Territory. The town was quarantined for several weeks, without railroad service or mail delivery. At least 150 cases of "black small pox" were reported by February 1881, resulting in more than 82 deaths.

Geography

According to the

United States Census Bureau The United States Census Bureau, officially the Bureau of the Census, is a principal agency of the Federal statistical system, U.S. federal statistical system, responsible for producing data about the American people and American economy, econ ...

, the city has a total area of , all land. The closest bodies of water are Horseshoe Lake, a small oxbow lake formed from the nearby river;

McCook Lake McCook Lake is a natural oxbow lake found in Union County, South Dakota, United States, about one mile north of North Sioux City. It was formed from a "cutoff" of the Missouri River. The lake is named for General John Cook, who commanded a comp ...

, the

Big Sioux River The Big Sioux River is a tributary of the Missouri River in eastern South Dakota and northwestern Iowa in the United States. It flows generally southwardly for ,U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataTh ...

and the

Missouri River The Missouri River is a river in the Central United States, Central and Mountain states, Mountain West regions of the United States. The nation's longest, it rises in the eastern Centennial Mountains of the Bitterroot Range of the Rocky Moun ...

Demographics

2010 census

As of the

census A census (from Latin ''censere'', 'to assess') is the procedure of systematically acquiring, recording, and calculating population information about the members of a given Statistical population, population, usually displayed in the form of stati ...

of 2010, there were 547 people, 233 households, and 146 families residing in the city. The

population density Population density (in agriculture: Standing stock (disambiguation), standing stock or plant density) is a measurement of population per unit land area. It is mostly applied to humans, but sometimes to other living organisms too. It is a key geog ...

was . There were 248 housing units at an average density of . The racial makeup of the city was 97.4%

White White is the lightest color and is achromatic (having no chroma). It is the color of objects such as snow, chalk, and milk, and is the opposite of black. White objects fully (or almost fully) reflect and scatter all the visible wa ...

, 0.5%

African American African Americans, also known as Black Americans and formerly also called Afro-Americans, are an Race and ethnicity in the United States, American racial and ethnic group that consists of Americans who have total or partial ancestry from an ...

, 0.2% Native American, 0.2% from other races, and 1.6% from two or more races.

Hispanic The term Hispanic () are people, Spanish culture, cultures, or countries related to Spain, the Spanish language, or broadly. In some contexts, Hispanic and Latino Americans, especially within the United States, "Hispanic" is used as an Ethnici ...

or Latino of any race were 1.5% of the population. There were 233 households, of which 28.8% had children under the age of 18 living with them, 50.2% were

married couples Marriage, also called matrimony or wedlock, is a culturally and often legally recognised union between people called spouses. It establishes rights and obligations between them, as well as between them and their children (if any), and b ...

living together, 9.0% had a female householder with no husband present, 3.4% had a male householder with no wife present, and 37.3% were non-families. 29.6% of all households were made up of individuals, and 12.9% had someone living alone who was 65 years of age or older. The average household size was 2.35 and the average family size was 2.94. The median age in the city was 39.2 years. 23% of residents were under the age of 18; 8.3% were between the ages of 18 and 24; 27.3% were from 25 to 44; 28.4% were from 45 to 64; and 13% were 65 years of age or older. The gender makeup of the city was 49.9% male and 50.1% female.

2000 census

As of the

of 2000, there were 586 people, 228 households, and 160 families residing in the city. The population density was . There were 240 housing units at an average density of . The racial makeup of the city was 96.59%

, 0.85%

, 1.02% Native American, 0.17% Asian, and 1.37% from two or more races.

or Latino of any race were 1.88% of the population. There were 228 households, out of which 38.6% had children under the age of 18 living with them, 61.4% were

living together, 6.6% had a female householder with no husband present, and 29.8% were non-families. 25.9% of all households were made up of individuals, and 10.1% had someone living alone who was 65 years of age or older. The average household size was 2.57 and the average family size was 3.13. In the city, the population was spread out, with 29.7% under the age of 18, 6.8% from 18 to 24, 30.2% from 25 to 44, 22.0% from 45 to 64, and 11.3% who were 65 years of age or older. The median age was 33 years. For every 100 females, there were 103.5 males. For every 100 females age 18 and over, there were 99.0 males. The median income for a household in the city was $47,625, and the median income for a family was $52,813. Males had a median income of $34,750 versus $23,750 for females. The

per capita income Per capita income (PCI) or average income measures the average income earned per person in a given area (city, region, country, etc.) in a specified year. In many countries, per capita income is determined using regular population surveys, such ...

for the city was $18,467. About 1.3% of families and 3.7% of the population were below the

poverty line The poverty threshold, poverty limit, poverty line, or breadline is the minimum level of income deemed adequate in a particular country. The poverty line is usually calculated by estimating the total cost of one year's worth of necessities for ...

, including 4.0% of those under age 18 and 3.9% of those age 65 or over.

References

{{Authority control Cities in South Dakota Cities in Union County, South Dakota Sioux City metropolitan area