Ethanol-Free Gas in Yankton, SD

3 verified ethanol-free gas stations

Yankton has 3 verified ethanol-free gas stations, all Casey's locations. All 3 carry 87-octane E0. For 90-octane or higher E0, the closest option is Maverik in Elk Point, South Dakota, about 40 miles away. Every listing is independently verified; the most recent check in Yankton was May 5, 2026.

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Ethanol-Free Gas in Yankton

Casey's General Store

1000 Broadway Street, Yankton, SD

605-665-0244

oct

Casey's

2300 Broadway Ave, Yankton, SD

6054128241

oct

Casey's

801 Burleigh St, Yankton, SD

6054122921

oct

All South Dakota Stations

Nearby Cities with Ethanol-Free Gas

Straight-line distance from Yankton.

Sioux Falls, SD

15 stations · 56 mi away

Sioux City, IA

11 stations · 58 mi away

Norfolk, NE

3 stations · 59 mi away

Columbus, NE

4 stations · 101 mi away

Slayton, MN

3 stations · 112 mi away

Ethanol-Free Gas in Yankton: FAQ

Is there ethanol-free gas in Yankton, SD?

Yes. Yankton has 3 gas stations verified to sell ethanol-free (E0) gasoline: Casey's (3 locations).

Does Yankton have 90-octane or higher ethanol-free gas?

Not currently. Stations in Yankton top out at 87-octane E0. The nearest station with 90-octane or higher is Maverik in Elk Point, South Dakota, about 40 miles away.

Which brands sell ethanol-free gas in Yankton?

Casey's (3 locations). All locations are independently verified through chain-website confirmation or direct source data; the most recent verification in Yankton was May 5, 2026.