Cheapest Gas in South Dakota
Every South Dakota metro AAA tracks, ranked from the lowest regular price up, updated 7/21/26. The cheapest gas in South Dakota right now is $3.87/gal in North Sioux City.
Cheapest metroNorth Sioux City$3.87/gal regular
| # | Metro | Regular | Diesel |
|---|---|---|---|
| 1 | North Sioux City | $3.87 | $4.75 |
| 2 | Sioux Falls | $3.87 | $4.78 |
| 3 | Rapid City | $4.12 | $4.84 |