(Pierre, SD) — South Dakotans continue to enjoy some of the nation’s lowest gas prices. As of yesterday, Triple-A says the average price for a gallon of regular unleaded was two dollars, 61 cents. That’s almost 20 cents lower than the average price at this time last year. Union County has the cheapest gas in the state at two-37. The national average price for a gallon of gas is two-84.
