Whiteclay is a census-designated place in Sheridan County, Nebraska, United States. The population was 10 at the 2010 census. A significant part of Whiteclay's economy was based on alcohol sales to residents of the Pine Ridge Indian Reservation, located two miles north across the border in South Dakota, where alcohol consumption and possession …Whiteclay is a census-designated place in Sheridan County, Nebraska, United States. The population was 10 at the 2010 census. A significant part of Whiteclay's economy was based on alcohol sales to residents of the Pine Ridge Indian Reservation, located two miles north across the border in South Dakota, where alcohol consumption and possession is prohibited. According to the Nebraska Liquor Control Commission, beer sales at Whiteclay's four liquor stores totalled 4.9 million cans in 2010 for gross sales of $3 million. The four beer merchants paid federal and state excise taxes of $413,932 that year. In 2017 the four liquor stores lost their licenses, and the town has ceased to be the main supplier of alcohol to the reservation.