McCook County, South Dakota

Geography

According to the U.S. Census Bureau, the county has a total area of 577 square miles (1,490 km²), of which 574 square miles (1,490 km²) is land and 2.7 square miles (7.0 km²) (0.5%) is water. The county contains Lake Vermillion.

Major highways

Adjacent counties

2000 census

As of the census of 2000, there were 5,832 people, 2,204 households, and 1,558 families residing in the county. The population density was 10 people per square mile (4/km²). There were 2,383 housing units at an average density of 4 per square mile (2/km²). The racial makeup of the county was 98.87% White, 0.05% Black or African American, 0.36% Native American, 0.21% Asian, 0.15% from other races, and 0.36% from two or more races. 0.77% of the population were Hispanic or Latino of any race.

There were 2,204 households out of which 34.10% had children under the age of 18 living with them, 62.10% were married couples living together, 5.10% had a female householder with no husband present, and 29.30% were non-families. 26.80% of all households were made up of individuals and 15.60% had someone living alone who was 65 years of age or older. The average household size was 2.58 and the average family size was 3.15.

In the county, the population was spread out with 28.40% under the age of 18, 6.20% from 18 to 24, 25.50% from 25 to 44, 20.40% from 45 to 64, and 19.50% who were 65 years of age or older. The median age was 39 years. For every 100 females there were 99.50 males. For every 100 females age 18 and over, there were 97.20 males.

The median income for a household in the county was $35,396, and the median income for a family was $42,609. Males had a median income of $28,390 versus $21,073 for females. The per capita income for the county was $16,374. About 5.50% of families and 8.10% of the population were below the poverty line, including 8.90% of those under age 18 and 8.80% of those age 65 or over.

2010 census

As of the 2010 United States Census, there were 5,618 people, 2,168 households, and 1,535 families residing in the county. The population density was 9.8 inhabitants per square mile (3.8/km²). There were 2,491 housing units at an average density of 4.3 per square mile (1.7/km²). The racial makeup of the county was 98.0% white, 0.4% American Indian, 0.1% Pacific islander, 0.1% Asian, 0.1% black or African American, 0.6% from other races, and 0.7% from two or more races. Those of Hispanic or Latino origin made up 1.8% of the population. In terms of ancestry, 61.5% were German, 12.8% were Irish, 11.1% were Norwegian, 7.4% were Swedish, 6.2% were Dutch, 5.2% were English, and 3.5% were American.

Of the 2,168 households, 30.4% had children under the age of 18 living with them, 61.0% were married couples living together, 6.0% had a female householder with no husband present, 29.2% were non-families, and 26.2% of all households were made up of individuals. The average household size was 2.45 and the average family size was 2.94. The median age was 42.7 years.

The median income for a household in the county was $42,022 and the median income for a family was $57,287. Males had a median income of $35,951 versus $29,750 for females. The per capita income for the county was $25,502. About 5.2% of families and 7.9% of the population were below the poverty line, including 6.7% of those under age 18 and 14.4% of those age 65 or over.

Cities

Unincorporated community

Townships

The county is divided into sixteen townships:

Other places