Gregory County is a county in the U.S. state of South Dakota. As of the 2010 United States Census, the population was 4,271. Its county seat is Burke. The county was created in 1862 and organized in 1898. It was named for the politician J. Shaw Gregory.
Gregory County lies on the south line of South Dakota. Its south boundary line abuts the north boundary line of Nebraska. The Missouri River flows southeastward along its east boundary line. The county terrain consists of rolling hills, sloping to the southeast. The eastern part of the county is etched with gullies and drainages, flowing to the river basin. The county’s highest point is in the SW corner, at 2,247′ (685m) ASL.
Gregory County has a total area of 1,054 square miles (2,730 km), of which 1,015 square miles (2,630 km) is land and 39 square miles (100 km) (3.7%) is water.
As of the 2000 United States Census, there were 4,792 people, 2,022 households, and 1,290 families in the county. The population density was 5 people per square mile (2/km²). There were 2,405 housing units at an average density of 2 per square mile (1/km²). The racial makeup of the county was 93.18% White, 0.04% Black or African American, 5.59% Native American, 0.23% Asian, 0.10% from other races, and 0.86% from two or more races. 0.86% of the population were Hispanic or Latino of any race. 50.0% were of German, 7.9% Czech, 6.3% Irish, 5.7% American and 5.5% English ancestry.
There were 2,022 households out of which 26.40% had children under the age of 18 living with them, 55.20% were married couples living together, 5.70% had a female householder with no husband present, and 36.20% were non-families. 33.90% of all households were made up of individuals and 20.30% had someone living alone who was 65 years of age or older. The average household size was 2.32 and the average family size was 2.98.
The county population contained 24.30% under the age of 18, 5.10% from 18 to 24, 22.00% from 25 to 44, 23.80% from 45 to 64, and 24.80% who were 65 years of age or older. The median age was 44 years. For every 100 females there were 94.50 males. For every 100 females age 18 and over, there were 91.90 males.
The median income for a household in the county was $22,732, and the median income for a family was $30,833. Males had a median income of $21,063 versus $16,920 for females. The per capita income for the county was $13,656. About 15.10% of families and 20.10% of the population were below the poverty line, including 24.50% of those under age 18 and 20.60% of those age 65 or over.
As of the 2010 United States Census, there were 4,271 people, 1,936 households, and 1,172 families in the county. The population density was 4.2 inhabitants per square mile (1.6/km). There were 2,503 housing units at an average density of 2.5 per square mile (0.97/km). The racial makeup of the county was 89.6% white, 7.5% American Indian, 0.3% Asian, 0.2% black or African American, 0.2% from other races, and 2.2% from two or more races. Those of Hispanic or Latino origin made up 0.9% of the population. In terms of ancestry, 54.5% were German, 11.4% were Irish, 10.9% were Czech, 7.1% were English, 6.0% were Norwegian, and 2.4% were American.
Of the 1,936 households, 23.7% had children under the age of 18 living with them, 49.9% were married couples living together, 7.4% had a female householder with no husband present, 39.5% were non-families, and 36.6% of all households were made up of individuals. The average household size was 2.18 and the average family size was 2.84. The median age was 48.2 years.
The median income for a household in the county was $33,940 and the median income for a family was $44,333. Males had a median income of $30,401 versus $25,804 for females. The per capita income for the county was $21,311. About 10.7% of families and 16.0% of the population were below the poverty line, including 27.1% of those under age 18 and 19.2% of those age 65 or over.
Gregory County South Dakota neighborhoods include: Alcester, Baltic, Black Hawk, Box Elder, Brandon, Buffalo Ridge, Camp Crook, Canton, Caputa, Central City, Chancellor, Colton, Creighton, Crooks, Custer, Deadwood, Dell Rapids, Elkton, Ellsworth Afb, Garretson, Hartford, Hermosa, Hill City, Howes, Humboldt, Keystone, Lead, Ludlow, Montrose, Nemo, New Underwood, North Sioux City, Owanka, Parker, Quinn, Rapid City, Renner, Rowena, Saint Onge, Scenic, Sherman, Silver City, Sioux Falls, Spearfish, Sturgis, Valley Springs, Wall, Wanblee, Wasta, Whitewood