Lawrence County is a county in the U.S. state of South Dakota. As of the 2010 United States Census, the population was 24,097. Its county seat is Deadwood.
Lawrence County lies on the west side of South Dakota. Its west boundary line abuts the east boundary line of the state of Wyoming. The terrain of Lawrence County consists of mountains in the south and west, falling off to the hilly NE portion. A tributary of the Redwater River flows east-northeasterly along a portion of the county’s north boundary line, delineating that portion of the line. The terrain generally slopes to the county’s northeast corner; its highest point is on a ridge on the south boundary line near its SW corner, at 6,581′ (2006m) ASL. The county has a total area of 800 square miles (2,100 km), of which 800 square miles (2,100 km) is land and 0.3 square miles (0.78 km) (0.03%) is water.
As of the 2000 United States Census, there were 21,802 people, 8,881 households, and 5,559 families in the county. The population density was 27 people per square mile (11/km²). There were 10,427 housing units at an average density of 13 per square mile (5/km²). The racial makeup of the county was 95.79% White, 0.23% Black or African American, 2.18% Native American, 0.33% Asian, 0.05% Pacific Islander, 0.33% from other races, and 1.08% from two or more races. 1.82% of the population were Hispanic or Latino of any race. 36.0% were of German, 12.0% Norwegian, 9.0% English and 7.5% Irish ancestry.
There were 8,881 households out of which 28.80% had children under the age of 18 living with them, 51.00% were married couples living together, 8.50% had a female householder with no husband present, and 37.40% were non-families. 29.60% of all households were made up of individuals and 11.50% had someone living alone who was 65 years of age or older. The average household size was 2.33 and the average family size was 2.89.
The county population contained 23.10% under the age of 18, 13.70% from 18 to 24, 25.40% from 25 to 44, 23.10% from 45 to 64, and 14.60% who were 65 years of age or older. The median age was 37 years. For every 100 females there were 96.80 males. For every 100 females age 18 and over, there were 93.30 males.
The median income for a household in the county was $31,755, and the median income for a family was $40,501. Males had a median income of $30,098 versus $19,679 for females. The per capita income for the county was $17,195. About 9.50% of families and 14.80% of the population were below the poverty line, including 15.70% of those under age 18 and 9.10% of those age 65 or over.
As of the 2010 United States Census, there were 24,097 people, 10,536 households, and 6,181 families in the county. The population density was 30.1 inhabitants per square mile (11.6/km). There were 12,756 housing units at an average density of 15.9 per square mile (6.1/km). The racial makeup of the county was 94.4% white, 2.0% American Indian, 0.7% Asian, 0.4% black or African American, 0.5% from other races, and 2.0% from two or more races. Those of Hispanic or Latino origin made up 2.5% of the population. In terms of ancestry, 44.5% were German, 13.7% were Irish, 13.4% were English, 11.4% were Norwegian, and 4.4% were American.
Of the 10,536 households, 24.0% had children under the age of 18 living with them, 46.6% were married couples living together, 8.1% had a female householder with no husband present, 41.3% were non-families, and 33.2% of all households were made up of individuals. The average household size was 2.19 and the average family size was 2.77. The median age was 41.0 years.
The median income for a household in the county was $42,356 and the median income for a family was $60,209. Males had a median income of $38,933 versus $28,649 for females. The per capita income for the county was $25,465. About 8.4% of families and 15.3% of the population were below the poverty line, including 15.8% of those under age 18 and 8.1% of those age 65 or over.