Midwest (PADD 2) benchmark
South Dakota Gas Prices
Regular gasoline, all formulations, including taxes · Week ending Oct 26, 2026
Regular gasoline · Oct 26, 2026
Midwest (PADD 2) regional average (state benchmark) average price per gallon
$4.269 +$0.120
vs. week earlier · +3.0%
−$0.000 vs U.S. average ($4.269)
- 4 weeks ago
- $4.291
- Year ago
- $2.873
- 52-week low
- $2.590
- 52-week high
- $4.410
5-year weekly trend
USD / gallonWeekly retail average, all formulations, including taxes. Source: U.S. Energy Information Administration. Latest available week: 2026-10-26.
All-time high
$4.970
Jun 13, 2022
All-time low (since 2000)
$1.030
Dec 17, 2001
What drivers in South Dakota are paying this week
South Dakota does not have a published weekly statewide average, so the reference number above is the Midwest (PADD 2) average of $4.269. That regional benchmark rose $0.120 week over week and is $0.000 below the national average of $4.269. Stations in South Dakota typically trade within roughly 20 to 40 cents of the regional figure, depending on distance from the nearest terminal and local taxes.
South Dakota has low fuel taxes and no refineries. Fuel is trucked in from Minnesota, Nebraska, and Wyoming, so prices rise as you move west across the state.
Why South Dakota gas prices land where they do
- Low state fuel tax.
- All fuel is imported by pipeline and truck.
- Western counties pay a freight premium over Sioux Falls.
These are structural factors, not daily noise. They explain why South Dakota tends to sit in the same part of the national price range week after week, even when the national average moves. For the general mechanics behind these forces, see our guide on how gas prices are set.
How South Dakota compares
Neighboring states with a published weekly average give the clearest picture of the regional spread. The table below compares South Dakota against those states and the national average.
| Market | Regular price | vs South Dakota | Week change |
|---|---|---|---|
| South Dakota | $4.269 | — | +$0.120 |
| Minnesota | $4.146 | −$0.123 | −$0.030 |
| U.S. average | $4.269 | −$0.000 | −$0.010 |
Ways to spend less on gas in South Dakota
- Membership warehouses such as Costco, Sam’s Club, and BJ’s usually price 10 to 30 cents below nearby branded stations.
- Stations a few miles off the interstate are often cheaper than the first exit, because they pay less for land and rely on local traffic.
- Apps that show station-level prices are worth using for the last mile — our numbers give you the regional baseline, they give you the address.
- Keeping tires at the recommended pressure and removing roof racks can recover 3 to 6 percent of fuel economy, which is worth 10 to 20 cents a gallon at current prices.
Want a number instead of a rule of thumb? The commute cost calculator turns your own miles and MPG into a weekly and annual fuel bill, using the current South Dakota price as the default.
How we source South Dakota prices
Every figure on this page comes from the U.S. Energy Information Administration's weekly retail gasoline survey, which reports average retail prices in dollars per gallon including taxes. We rebuild the page every week after the survey is released, so the date on the price panel always matches the data behind it. We do not estimate missing state numbers; where the EIA does not publish a statewide series, we label the regional benchmark instead. Full details are in our methodology and data sources pages.
The bottom line for South Dakota drivers
At the regional benchmark of $4.269 per gallon, a 12-gallon fill-up in South Dakota costs about $51.23. Over a 15,000-mile year at 28 MPG, that implies roughly $2287 in fuel, before any local station discounts.
South Dakota gas price FAQ
What is the average gas price in South Dakota right now?
The U.S. Energy Information Administration does not publish a weekly statewide retail average for South Dakota. The closest official benchmark is the Midwest (PADD 2) average, which was $4.269 per gallon for the week ending Oct 26, 2026. Local station prices in South Dakota typically fall within roughly 20 to 40 cents of that regional figure.
Is gas cheaper in South Dakota than the national average?
South Dakota is compared against the Midwest (PADD 2) benchmark rather than a statewide number. The region averaged $4.269 versus the national average of $4.269, so South Dakota stations are best described as tracking below the national figure.
Why are gas prices low in South Dakota?
Low state fuel tax. All fuel is imported by pipeline and truck. Western counties pay a freight premium over Sioux Falls. These factors matter more than the national average in determining what local stations charge, because fuel markets are regional, not national.
Where can I find the cheapest gas in South Dakota?
Station-level pricing is not part of the EIA dataset, so we do not publish a cheapest-station list. In practice, the lowest prices in South Dakota are usually at membership warehouses, at high-volume stations on secondary roads rather than interstate exits, and at stations in lower-cost suburban counties. Use a station-level price app for the final address and our South Dakota benchmark to judge whether the price you see is reasonable.
Will gas prices go down in South Dakota?
Nobody can forecast a specific week with confidence. What can be said is mechanical: South Dakota prices follow crude oil costs, regional refining capacity, seasonal fuel specifications, and local taxes. When crude falls and refineries run normally, prices usually follow within two to four weeks. When a refinery goes down or a hurricane threatens the Gulf Coast, the move can reverse within days.