Ethanol-Free Gas in Sioux City, IA

11 verified ethanol-free gas stations

Sioux City has 11 verified ethanol-free gas stations from 2 brands: Casey's and Maverik. 4 stations carry 91-octane and 7 stations carry 87-octane ethanol-free fuel. Every listing is independently verified; the most recent check in Sioux City was May 5, 2026.

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Ethanol-Free Gas in Sioux City

Casey's General Store

1000 Riverside Blvd, Sioux City, IA

712-277-9949

oct

Casey's

1132 Lewis Blvd, Sioux City, IA

7122547288

oct

Casey's

1419 Hamilton Blvd, Sioux City, IA

7122502674

oct

Casey's

3051 Floyd Blvd, Sioux City, IA

7122390644

oct

Casey's

3731 Hamilton Blvd, Sioux City, IA

7122547279

oct

Casey's

4301 Stone Ave, Sioux City, IA

7122502699

oct

Casey's

4727 Southern Hills Dr, Sioux City, IA

7122502708

oct

Maverik

1005 Gordon Drive, Sioux City, IA

(712) 258-0023

oct

Maverik

1373 Pierce Street, Sioux City, IA

(712) 258-4226

oct

Maverik

1821 Hamilton Blvd, Sioux City, IA

(712) 255-7600

oct

Maverik

1925 S Lakeport St, Sioux City, IA

(712) 276-3385

oct

All Iowa Stations

Nearby Cities with Ethanol-Free Gas

Straight-line distance from Sioux City.

Yankton, SD

3 stations · 58 mi away

Norfolk, NE

3 stations · 62 mi away

Sioux Falls, SD

15 stations · 74 mi away

Omaha, NE

60 stations · 87 mi away

Columbus, NE

4 stations · 89 mi away

Ethanol-Free Gas in Sioux City: FAQ

Is there ethanol-free gas in Sioux City, IA?

Yes. Sioux City has 11 gas stations verified to sell ethanol-free (E0) gasoline: Casey's (7 locations) and Maverik (4 locations).

Does Sioux City have 90-octane or higher ethanol-free gas?

Yes. 4 of the 11 stations in Sioux City carry 91-octane ethanol-free fuel.

Which brands sell ethanol-free gas in Sioux City?

Casey's (7 locations) and Maverik (4 locations). All locations are independently verified through chain-website confirmation or direct source data; the most recent verification in Sioux City was May 5, 2026.