Diesel Prices in South Dakota Today
Average diesel price in South Dakota: $6.277 per gallon on September 22, 2026. U.S. average $6.529. Updated daily.
What is the price of diesel in South Dakota today?
Diesel in South Dakota averages $6.277 per gallon today (September 22, 2026), $0.252 less than the U.S. average of $6.529. South Dakota ranks #16 of 51 for cheapest diesel (1 = cheapest). A loaded semi at about 6.3 mpg spends about $1.00 per mile on fuel in South Dakota.
per gallon today
U.S. average $6.529
of 51 (1 = cheapest)
semi truck, today
Fuel cost per mile in South Dakota
Estimated diesel cost at today's South Dakota price of $6.277 a gallon, using fuel economy calibrated to FHWA and NACFE data.
| Truck | Fuel per mile | Fuel per 1,000 miles |
|---|---|---|
| Dry Van38,000 lbs, ~6.3 mpg | $1.00 | $999 |
| Reefer38,000 lbs, ~6.0 mpg | $1.04 | $1,040 |
| Flatbed40,000 lbs, ~6.0 mpg | $1.04 | $1,038 |
| Hotshot12,000 lbs, ~8.9 mpg | $0.70 | $705 |
| Box Truck7,000 lbs, ~9.1 mpg | $0.69 | $688 |
Your numbers depend on load weight, speed, terrain and idling. Enter them in the truck fuel cost calculator for an exact estimate.
Frequently asked questions
What is the price of diesel in South Dakota today?
Diesel in South Dakota averages $6.277 per gallon today (September 22, 2026), $0.252 less than the U.S. average of $6.529. South Dakota ranks #16 of 51 for cheapest diesel (1 = cheapest). A loaded semi at about 6.3 mpg spends about $1.00 per mile on fuel in South Dakota.
How much does it cost to fill a semi truck in South Dakota?
At $6.28 a gallon, 150 gallons of diesel costs about $942 and 200 gallons about $1,255 in South Dakota today.
Is diesel cheaper in South Dakota than nearby states?
Among nearby states in the same region, the cheapest today is Oklahoma at $6.029 a gallon. South Dakota is $6.277.
How often are South Dakota diesel prices updated?
Every day. This page refreshes each morning from daily state averages, with the EIA weekly survey as a backup.
| Oklahoma | $6.029 |
| Tennessee | $6.215 |
| Nebraska | $6.231 |
| North Dakota | $6.239 |
| Kansas | $6.249 |
| Iowa | $6.314 |
Source: AAA daily state average, September 22, 2026. All 50 states
Running freight through South Dakota?
Texas Solutions dispatches semis for 5%, hotshots for 8% and box trucks for 10% of weekly gross. We plan lanes to cut empty miles and fuel.