Dewey County, South Dakota

Dewey County is a located in the  of. As of, the population is 5,972. Its is. It was created in 1883 and was named for William P. Dewey, Territorial surveyor-general from 1873 to 1877.

Geography
According to the, the county has a total area of 6,334 (2,446 ). 5,964 km² (2,303 sq mi) of it is land and 370 km² (143 sq mi) of it (5.85%) is water. Almost the entire county lies in the. The balance of the county, along its extreme northern, lies in the. It is one of five South Dakota counties that lie entirely on Indian reservations.

Townships
The county is divided into two areas of unorganized territory: North Dewey and South Dewey.

Major Highways

 * [[Image:US 212.svg|23px]]
 * [[Image:SD 20.svg|20px]]
 * [[Image:SD 63.svg|20px]]
 * [[Image:SD 65.svg|20px]]

Adjacent Counties

 * - north
 * - northeast
 * - east
 * - southeast
 * - south
 * - west

Demographics
As of the of 2000, there were 5,972 people, 1,863 households, and 1,386 families residing in the county. The was 1/km² (3/sq mi). There were 2,133 housing units at an average density of 0/km² (1/sq mi). The racial makeup of the county was 74.16%, 24.15% , 0.03% or , 0.12% , 0.05% , 0.07% from , and 1.42% from two or more races. 0.85% of the population were or  of any race.

There were 1,863 households out of which 43.70% had children under the age of 18 living with them, 42.90% were living together, 22.30% had a female householder with no husband present, and 25.60% were non-families. 22.10% of all households were made up of individuals and 8.90% had someone living alone who was 65 years of age or older. The average household size was 3.15 and the average family size was 3.66.

In the county, the population was spread out with 38.90% under the age of 18, 9.00% from 18 to 24, 27.20% from 25 to 44, 16.60% from 45 to 64, and 8.30% who were 65 years of age or older. The median age was 26 years. For every 100 females there were 95.90 males. For every 100 females age 18 and over, there were 95.00 males.

The county's makes it one of the.