Bennett County, South Dakota
Map of South Dakota highlighting Bennett County
Location in the state of South Dakota
Map of USA SD
South Dakota's location in the U.S.
Founded 1909
Named for John E. Bennett or Granville C. Bennett
Seat Martin
 - Total
 - Land
 - Water

1,191 sq mi (3,084 km²)
1,185 sq mi (3,070 km²)
5 sq mi (14 km²), 0.45%
 - (2000)
 - Density

3/sq mi (1/km²)

Bennett County is a county located in the U.S. state of South Dakota. As of 2000, the population is 3,574. Its county seat is Martin6.


Although created in 1909, Bennett County, previously part of the Pine Ridge Indian Reservation, remained a part of Fall River County until its organization in 1912, when its first board of county commissioners was elected on April 27. In November 1912, the town of Martin was chosen as the county seat.


According to the U.S. Census Bureau, the county has a total area of 3,084 km² (1,191 sq mi). 3,070 km² (1,185 sq mi) of it is land and 14 km² (5 sq mi) of it (0.45%) is water.

Townships Edit

The county is divided into two areas of unorganized territory: East Bennett and West Bennett.

Major highwaysEdit

Adjacent counties Edit


Historical populations
Census Pop.
1910 96
1920 1,924 1,904.2%
1930 4,590 138.6%
1940 3,983 −13.2%
1950 3,396 −14.7%
1960 3,053 −10.1%
1970 3,088 1.1%
1980 3,044 −1.4%
1990 3,206 5.3%
2000 3,574 11.5%
Est. 2006 3,543 −0.9%

As of the census2 of 2000, there were 3,574 people, 1,123 households, and 818 families residing in the county. The population density was 1/km² (3/sq mi). There were 1,278 housing units at an average density of 0/km² (1/sq mi). The racial makeup of the county was 40.91% White, 0.28% Black or African American, 52.07% Native American, 0.06% Asian, 0.14% Pacific Islander, 0.17% from other races, and 6.38% from two or more races. 2.01% of the population were Hispanic or Latino of any race. 14.2% were of German and 6.1% of Irish ancestry.

There were 1,123 households out of which 39.70% had children under the age of 18 living with them, 48.60% were married couples living together, 17.50% had a female householder with no husband present, and 27.10% were non-families. 23.30% of all households were made up of individuals and 10.20% had someone living alone who was 65 years of age or older. The average household size was 3.14 and the average family size was 3.74.

In the county, the population was spread out with 36.30% under the age of 18, 9.20% from 18 to 24, 25.30% from 25 to 44, 18.00% from 45 to 64, and 11.10% who were 65 years of age or older. The median age was 29 years. For every 100 females there were 98.30 males. For every 100 females age 18 and over, there were 93.90 males. The county's per-capita income makes it one of the poorest counties in the United States.

Cities and towns Edit

Coordinates: 43°11′N 101°40′W / 43.18, -101.66

This page uses content from the English language Wikipedia. The original content was at Bennett County, South Dakota. The list of authors can be seen in the page history. As with this Familypedia wiki, the content of Wikipedia is available under the Creative Commons License.

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