Cassia County, Idaho
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Cassia County is a county located in the state of Idaho. As of 2000, the population is 21,416. The county seat is Burley6. Albion served as county seat between 1879 and 1918.
Cassia County was created by the Idaho Territorial Legislature on February 20, 1879 by a partition of Owyhee County. A western portion became Twin Falls County in 1907. The county assumed its present boundaries when an eastern portion became Power County on January 30, 1913. The county was named for Cassia Creek, which in turn was named either for John Cazier, a member of the Mormon Battalion and an emigrant train captain, or for a plant found in the area.
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Geography
The Silent City of Rocks National Reserve, containing exposed granitic batholith as old as 2.5 billion years is located in the southern part of the county. According to the U.S. Census Bureau, the county has a total area of 6,683 km² (2,580 mi²). 6,647 km² (2,566 mi²) of it is land and 36 km² (14 mi²) of it is water. The total area is 0.54% water.
Adjacent Counties
- Minidoka County, Idaho - north
- Blaine County, Idaho - north
- Power County, Idaho - northeast
- Oneida County, Idaho - east
- Box Elder County, Utah - southeast
- Elko County, Nevada - southwest
- Twin Falls County, Idaho - west
- Jerome County, Idaho - northwest
Demographics
As of the census2 of 2000, there are 21,416 people, 7,060 households, and 5,485 families residing in the county. The population density is 3/km² (8/mi²). There are 7,862 housing units at an average density of 1/km² (3/mi²). The racial makeup of the county is 84.69% White, 0.17% Black or African American, 0.80% Native American, 0.37% Asian, 0.05% Pacific Islander, 12.06% from other races, and 1.87% from two or more races. 18.74% of the population are Hispanic or Latino of any race.
There are 7,060 households out of which 42.40% have children under the age of 18 living with them, 65.20% are married couples living together, 8.80% have a female householder with no husband present, and 22.30% are non-families. 19.50% of all households are made up of individuals and 9.50% have someone living alone who is 65 years of age or older. The average household size is 2.99 and the average family size is 3.46.
In the county the population is spread out with 34.10% under the age of 18, 9.00% from 18 to 24, 24.50% from 25 to 44, 19.60% from 45 to 64, and 12.70% who are 65 years of age or older. The median age is 31 years. For every 100 females there are 101.20 males. For every 100 females age 18 and over, there are 98.70 males.
The median income for a household in the county is $33,322, and the median income for a family is $38,162. Males have a median income of $29,132 versus $19,851 for females. The per capita income for the county is $14,087. 13.60% of the population and 11.10% of families are below the poverty line. Out of the total population, 17.60% of those under the age of 18 and 8.00% of those 65 and older are living below the poverty line.
Cities and towns
| Regions of Idaho | 
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| Rocky Mountains | Columbia River Plateau | Inland Empire | Basin and Range Province | |
| Boise metropolitan area | Treasure Valley | Idaho Panhandle | Magic Valley | |
| Largest cities | |
| Blackfoot | Boise | Burley | Caldwell | Chubbuck | Coeur D'Alene | Eagle | Garden City | Hayden | Idaho Falls | Lewiston | Meridian | Moscow | Mountain Home | Nampa | Pocatello | Post Falls | Rexburg | Twin Falls | |
| Counties | |
| Ada | Adams | Bannock | Bear Lake | Benewah | Bingham | Blaine | Boise | Bonner | Bonneville | Boundary | Butte | Camas | Canyon | Caribou | Cassia | Clark | Clearwater | Custer | Elmore | Franklin | Fremont | Gem | Gooding | Idaho | Jefferson | Jerome | Kootenai | Latah | Lemhi | Lewis | Lincoln | Madison | Minidoka | Nez Perce | Oneida | Owyhee | Payette | Power | Shoshone | Teton | Twin Falls | Valley | Washington | |