Gas prices in South Dakota today
The latest reported regular gas average in South Dakota is $4.23 per gallon, with diesel at $6.06/gal. Prices include taxes. Compare fuel grades, recent changes and local metro averages below; individual pump prices vary.
South Dakota gas price trends
Regular, AAA daily state averages, as of 2026-10-24
A 15-US-gallon fill of regular gasoline in South Dakota costs about $63.50 at the state average reported on 2026-10-24, $0.42 less than on 2026-10-17.
The comparison holds the amount of fuel constant, so it shows what the price change means for your bill. For a road trip, use the averages to set a budget and check actual pump prices before choosing a stop.
- vs yesterday
- no change South Dakota regular 0.0%
- $4.23 on 2026-10-23 → $4.23
- $0.01 less per 15-gallon fill
- vs a week ago
- down South Dakota regular 0.7%
- $4.26 on 2026-10-17 → $4.23
- $0.42 less per 15-gallon fill
- vs a month ago
- down South Dakota regular 1.9%
- $4.32 → $4.23
- $1.26 less per 15-gallon fill
- vs a year ago
- up South Dakota regular 48.4%
- $2.85 → $4.23
- $20.70 more per 15-gallon fill
Cost for 15 US gallons of regular gasoline · USD
- Reported 2026-10-24
- USD 63.50
- Week ago (2026-10-17)
- USD 63.92
- Month ago
- USD 64.76
- Year ago
- USD 42.80
FuelWide calculation: each AAA regular state average × the selected US gallons, rounded to cents. Observations as of 2026-10-24; month-ago and year-ago are AAA's comparison labels. Station prices vary.
Check the AAA source for South Dakota
| Period | regular | midgrade | premium | diesel |
|---|---|---|---|---|
| Reported 2026-10-24 | $4.23 | $4.45 | $5.04 | $6.06 |
| Yesterday (2026-10-23) | $4.23 | $4.47 | $5.04 | $6.05 |
| Week ago (2026-10-17) | $4.26 | $4.49 | $5.05 | $6.07 |
| Month ago | $4.32 | $4.52 | $5.05 | $6.25 |
| Year ago | $2.85 | $3.03 | $3.50 | $3.31 |
The EIA doesn’t survey South Dakota weekly, so there is no long South Dakota series. For the trend it follows, see US gas price history since 1990 →
South Dakota diesel prices
Diesel averages $6.06 per gallon in South Dakota, according to AAA on 2026-10-24. That is $0.28/gal below the unweighted mean of AAA’s 51 diesel averages for states and DC. A 30-gallon fill costs about $181.77.
South Dakota diesel prices by city, with the weekly and yearly change and the diesel tax →
Lowest reported metro diesel averages in South Dakota
AAA metro averages as of 2026-10-24. Area averages, not individual station prices. Compare all local areas →
Gas stations in South Dakota
Stations color-coded by brand — the panel ranks the providers and you can filter to one brand. Move the map anywhere in South Dakota and press “Search this area”.
Locations onlyNo public station-price feed exists here, so pins show locations, brands and directions only. Prices on this page are area averages. Locations come from OpenStreetMap, a volunteer-edited map, so a new or rebranded station can be missing until someone updates it.
Explore stations, fuel options and directions.
a gallon more for premium than regular in South Dakota. How that compares with every other state, and whether your car needs it.
Where gas is cheapest in South Dakota: prices by metro area
AAA reports separate daily averages for 3 South Dakota metros — $0.13 a gallon between the cheapest and the dearest.
AAA metro averages · 2026-10-24
What a tank costs in South Dakota, and how much of it is tax
- Compact — 12 gal$50.80
- Sedan / crossover — 15 gal$63.50
- SUV — 20 gal$84.66
- Full-size pickup — 26 gal$110.06
Tax is 11% of the pump price in South Dakota. Pre-tax figure is an estimate — state rates as of 2026-01-01.
South Dakota compared with neighbouring states
Where the line is worth crossing, and where it is not — each comparison shows how much of the gap is tax rather than the fuel itself.
- North Carolina$3.51
- Georgia$3.67
- Texas$3.73
- Louisiana$3.80
- South Carolina$3.80
- Alabama$3.83
- Tennessee$3.83
- Mississippi$3.85
- Arkansas$3.85
- Delaware$3.92
- Missouri$3.94
- Oklahoma$3.94
- Kansas$3.95
- Maryland$3.99
- Indiana$4.02
- Kentucky$4.05
- Virginia$4.06
- North Dakota$4.12
- Florida$4.13
- Rhode Island$4.15
- New Jersey$4.18
- Iowa$4.20
- Minnesota$4.21
- West Virginia$4.21
- New Hampshire$4.22
- Massachusetts$4.23
- South Dakota$4.23
- New Mexico$4.24
- Connecticut$4.31
- Maine$4.31
- Nebraska$4.33
- Vermont$4.36
- District of Columbia$4.36
- New York$4.39
- Colorado$4.41
- Montana$4.41
- Wyoming$4.42
- Ohio$4.42
- Pennsylvania$4.45
- Arizona$4.52
- Wisconsin$4.52
- Utah$4.68
- Idaho$4.70
- Michigan$4.84
- Alaska$4.87
- Oregon$4.88
- Illinois$4.90
- Nevada$5.30
- Washington$5.31
- Hawaii$5.66
- California$6.03
The answer, in full — and where it comes from
As of 24 October 2026, regular gasoline in South Dakota averages $4.23/gal, the state average. Source: Daily fuel gauge report, AAA (a third-party aggregator, published daily). Retrieved by FuelWide on 24 October 2026.
Midgrade gasoline in South Dakota averages $4.45/gal. Premium gasoline in South Dakota averages $5.04/gal. Diesel in South Dakota averages $6.06/gal.
- Price:
- $4.23/gal
- Fuel:
- Regular gasoline
- Price basis:
- State average
- Applies to:
- South Dakota (state level)
- Measured:
- 2026-10-24
- Retrieved:
- 2026-10-24
- Source:
- AAA — a third-party aggregator
Daily fuel gauge report · State and metro averages: AAA · How we measure this
Tools for drivers in South Dakota
Frequently asked questions
How much is gas in South Dakota right now?
Regular gasoline in South Dakota averages $4.23 per gallon today (AAA daily state average). Midgrade is $4.45, premium $5.04 and diesel $6.06.
Is gas in South Dakota expensive compared to other states?
South Dakota ranks 27 of 51 states from cheapest to most expensive for regular gas this week.
Is gas in South Dakota above or below the US average?
Regular in South Dakota is 2.0% below the unweighted mean of AAA's 51 state averages ($4.32/gal), measured on 2026-10-24. The EIA publishes a separate, volume-weighted national average weekly; the two are different measurements and will not match.
How much is diesel in South Dakota today?
Diesel averages $6.06 a gallon in South Dakota today (AAA daily state average), down 0.1% on a week earlier. A 30-gallon pickup fill costs about $181.77.
How have gas prices in South Dakota changed recently?
Regular gas in South Dakota is down 0.7% on a week ago, down 1.9% on a month ago, up 48.4% on a year ago, according to AAA's daily state averages.
Where is gas cheapest in South Dakota?
Among the 3 South Dakota metro areas AAA reports, Sioux Falls is cheapest at $4.11 a gallon for regular and Rapid City dearest at $4.24. These are area averages; individual stations vary.
How much tax is on a gallon of diesel in South Dakota?
$0.54 a gallon — $0.24 federal plus $0.30 in South Dakota state taxes and fees, the 32 highest of 51 states. That is about 9% of today's pump price of $6.06. Rates as of 2026-01-01.
How much tax is on a gallon of gas in South Dakota?
$0.48 a gallon — $0.18 federal plus $0.30 in South Dakota state taxes and fees, the 32 highest of 51 states. That is about 11% of the pump price. Rates as of 2026-01-01.
How much does it cost to fill up in South Dakota?
At today's average of $4.23 a gallon, a 15-gallon sedan tank costs $63.50 to fill from empty, and a 26-gallon full-size pickup $110.06.
Why this price is what it is
- Premium vs. Regular Gas: Is Premium Actually Worth It?Premium costs more per gallon — but does it help your car? Here's when premium is worth it, when it's wasted money, and what octane really does.
- Fuel Taxes Explained: What You Really Pay Per GallonA big slice of every gallon is tax — but how much, and where does it go? A clear guide to federal, state and European fuel taxes.
- The Best Day and Time to Buy Gas (Backed by Price Data)Studies of billions of transactions point to early in the week as the cheapest time to fill up. Here's the best day, the best time of day, and why it works.