Ха́млин округі, Оңтүстік Дакота штаты

County in South Dakota, United States

Hamlin County is a county in the U. S. state of South Dakota. As of the 2020 census, the population was 6,164. Its county seat is Hayti. The county was created in 1873 and organized in 1878. It was named for Hannibal Hamlin, Lincoln's first vice president.

The terrain of Hamlin County consists of low rolling hills, dotted with small lakes and ponds. The land is largely dedicated to agriculture. The terrain slopes to the south southeast, and its highest point is on the eastern boundary line, near its NE corner, at 1,949 feet (594 m) ASL. Hamlin County has a total area of 538 square miles (1,393 km2), of which 507 square miles (1,313 km2) is land and 31 square miles (80 km2) (5.7%) is water.

As of the 2010 census, there were 5,903 people, 2,108 households, and 1,483 families in the county. The population density was There were 2,760 housing units at an average density of The racial makeup of the county was 96.7% white, 0.3% American Indian, 0.2% black or African American, 0.2% Asian, 1.8% from other races, and 0.8% from two or more races. Those of Hispanic or Latino origin made up 2.5% of the population. In terms of ancestry, 42.3% were German, 24.0% were Norwegian, 7.0% were English, 6.1% were Irish, 5.4% were Dutch, and 5.3% were American. Of the 2,108 households, 33.2% had children under the age of 18 living with them, 61.4% were married couples living together, 5.6% had a female householder with no husband present, 29.6% were non families, and 25.6% of all households were made up of individuals. The average household size was 2.68 and the average family size was 3.28. The median age was 36.8 years. The median income for a household in the county was $44,439 and the median income for a family was $54,483. Males had a median income of $36,921 versus $24,645 for females. The per capita income for the county was $21,558. About 4.9% of families and 7.5% of the population were below the poverty line, including 11.5% of those under age 18 and 7.9% of those age 65 or over.