Yankton, South Dakota Yankton, South Dakota Yankton is a city in, and the county seat of, Yankton County, South Dakota, United States. The population was 14,454 at the 2010 census. Yankton is the principal city of the Yankton Micropolitan Statistical Area, which includes the entirety of Yankton County, and which had an estimated population of 22,662 as of July 1, 2017. Yankton was the first capital of Dakota Territory. It is named for the Yankton tribe of Nakota (Sioux) Native Americans; Yankton is derived from the Nakota word "I-hank-ton-wan" ("the end village"). Yankton is located on the Missouri River just downstream of the
Manteo (Native American leader) Manteo (Native American leader) Manteo was a Native American Croatan Indian, the chief of a local tribe that befriended the English explorers who landed at Roanoke Island in 1584. In 1585 the English returned to Roanoke, arriving too late in the year to plant crops and harvest food, and Manteo helped the colonists make it through the harsh winter. He traveled to England on two occasions, in 1584 and 1585. After staying there, he was among those who sailed for the New World in 1587 along with Governor John White and his colonists, who founded the failed settlement later known