South Dakota gas prices
South Dakota gas prices usually run near or slightly below the national average. The state is in PADD 2 with pipeline access from the Gulf Coast and Midwest. South Dakota doesn't have its own refineries, but its central location means fuel from multiple sources is available.
Sioux Falls is the main market and typically has the best prices thanks to station competition. Western South Dakota, including Rapid City and the Black Hills tourist area, tends to run 5 to 15 cents higher. State gas taxes are low, and ethanol blended fuel is widely available thanks to the state's corn production.
Price history
Why is gas more expensive near the Black Hills?
The Black Hills and Rapid City are farther from pipeline terminals and distribution hubs. During tourist season (summer), increased demand from visitors to Mount Rushmore and Sturgis can push prices up further.
Does South Dakota produce ethanol?
Yes. South Dakota is a significant corn-producing state with multiple ethanol plants. E10 is standard at most stations, and E15 is increasingly available at a discount. Ethanol production helps keep blended fuel prices competitive.
How do South Dakota prices compare to North Dakota?
They're usually similar, within a few cents. Both states are in PADD 2 with moderate taxes. North Dakota sometimes has a slight advantage from its in-state refinery capacity and oil production infrastructure.