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Minidoka County, Idaho facts for kids

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Minidoka County
Minidoka County Courthouse
Minidoka County Courthouse
Official seal of Minidoka County
Seal
Map of Idaho highlighting Minidoka County
Location within the U.S. state of Idaho
Map of the United States highlighting Idaho
Idaho's location within the U.S.
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Country  United States
State  Idaho
Founded January 28, 1913
Named for Dakota Sioux word meaning "a fountain or spring of water."
Seat Rupert
Largest city Rupert
Area
 • Total 763 sq mi (1,980 km2)
 • Land 758 sq mi (1,960 km2)
 • Water 5.3 sq mi (14 km2)  0.7%
Population
 (2020)
 • Total 21,613
 • Density 28.326/sq mi (10.937/km2)
Time zone UTC−7 (Mountain)
 • Summer (DST) UTC−6 (MDT)
Congressional district 2nd

Minidoka County is a county located in the U.S. state of Idaho. As of the 2010 census, the population was 20,069. The county seat and largest city is Rupert.

Minidoka County is part of the Burley, ID Micropolitan Statistical Area.

The name Minidoka is of Dakota Sioux origin meaning "a fountain or spring of water." Minidoka was first used in 1883 as a name for the Union Pacific's Oregon Short Line, a railroad spur in the middle of the Snake River Plain. The spur later became the site of a watering station along the line. The village of Minidoka grew up next to the station. The Minidoka name was then given to a reclamation project under then President Theodore Roosevelt which included the construction of the Minidoka Dam, completed in 1904. Minidoka National Historic Site (in Jerome County) was part of the original reclamation project and hence shares the name. Minidoka County was created by the Idaho Legislature on January 28, 1913, by a partition of Lincoln County.

Geography

According to the U.S. Census Bureau, the county has a total area of 763 square miles (1,980 km2), of which 758 square miles (1,960 km2) is land and 5.3 square miles (14 km2) (0.7%) is water.

It is part of the Magic Valley region of the Snake River Plain. Irrigated farmland covers the southern part of the county, while lava beds cover the northern portion. The elevation is generally in the range of 4,200 feet (1,300 m) to 4,500 feet (1,400 m). The Snake River forms the county's southern boundary.

Adjacent Counties

National protected area

Highways

  • I-84.svg Interstate 84
  • ID-24.svg SH-24
  • ID-25.svg SH-25

Demographics

Historical population
Census Pop.
1920 9,035
1930 8,403 −7.0%
1940 9,870 17.5%
1950 9,785 −0.9%
1960 14,394 47.1%
1970 15,731 9.3%
1980 19,718 25.3%
1990 19,361 −1.8%
2000 20,174 4.2%
2010 20,069 −0.5%
2020 21,613 7.7%
U.S. Decennial Census
1790-1960 1900-1990
1990-2000 2010-2020 2020

2010 census

At the 2010 census, there were 20,069 people, 7,170 households, and 5,315 families in the county. The population density was 26.5 inhabitants per square mile (10.2/km2). There were 7,665 housing units at an average density of 10.1 per square mile (3.9/km2). The racial makeup of the county was 80.2% white, 1.2% American Indian, 0.4% black or African American, 0.4% Asian, 15.3% from other races, and 2.4% from two or more races. Those of Hispanic or Latino origin made up 32.4% of the population. In terms of ancestry, 19.9% were German, 16.8% were English, 10.2% were American, and 6.5% were Irish.

Of the 7,170 households, 37.5% had children under the age of 18 living with them, 59.8% were married couples living together, 9.1% had a female householder with no husband present, 25.9% were non-families, and 22.0% of households were made up of individuals. The average household size was 2.79 and the average family size was 3.27. The median age was 35.3 years.

The median household income was $40,350 and the median family income was $47,079. Males had a median income of $32,895 versus $22,271 for females. The per capita income for the county was $17,747. About 9.4% of families and 13.1% of the population were below the poverty line, including 20.0% of those under age 18 and 7.4% of those age 65 or over.

Cities

Education

The only public high school in the county is Minico High School near Rupert.

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