| Gas Station | Regular | Plus | Premium | Diesel |
 | Midwest Petroleum
1060 Bryan Rd, O Fallon, MO 63366
Get Directions | $3.529
Lowest Price | N/A | N/A | N/A |
 | Circle K
2035 Highway K, O Fallon, MO 63366
Get Directions | $3.559 | N/A | $3.899 | $3.699 |
| Circle K
602 N Main St, O Fallon, MO 63366
Get Directions | $3.599 | N/A | N/A | $3.649 |
| Quik Trip
801 Belleau Creek Rd, O Fallon, MO 63366
Get Directions | $3.539 | $3.709 | $3.839
Lowest Price | N/A |
| Quik Trip
8601 Mexico Rd, O Fallon, MO 63366
Get Directions | $3.539 | $3.689
Lowest Price | $3.859 | N/A |
| Quik Trip
955 Bryan Rd, O Fallon, MO 63366
Get Directions | $3.529 | $3.689 | $3.859 | N/A |
| Fast Lane
7430 Highway N, O Fallon, MO 63366
Get Directions | $3.539 | N/A | N/A | $3.699 |
 | Mobil
2999 Highway K, O Fallon, MO 63366
Get Directions | $3.559 | N/A | N/A | $3.599 |
| Fast Lane
1001 Tom Ginnever Ave, O Fallon, MO 63366
Get Directions | $3.539 | N/A | N/A | $3.699 |
| Mobil
1325 N Main St, O Fallon, MO 63366
Get Directions | $3.589 | $3.749 | N/A | $3.599 |
| Zx
4425 Highway 79, O Fallon, MO 63366
Get Directions | N/A | N/A | N/A | $3.599 |
| Zx
8695 Veterans Memorial Pkwy, O Fallon, MO 63366
Get Directions | $3.599 | N/A | N/A | N/A |
| Fast Lane
1000 N Main St, O Fallon, MO 63366
Get Directions | $3.559 | N/A | N/A | $3.699 |
| Hucks
328 S Main St, O Fallon, MO 63366
Get Directions | $3.539 | N/A | $3.879 | N/A |
 | Phillips 66
1322 N Main St, O Fallon, MO 63366
Get Directions | $3.539 | N/A | N/A | $3.599 |
| Phillips 66
708 Highway K, O Fallon, MO 63366
Get Directions | $3.529 | N/A | N/A | $3.659 |
| Zx
7407 Highway N, O Fallon, MO 63366
Get Directions | $3.559 | N/A | N/A | $3.659 |
| Phillips 66
2140 W Terra Ln, O Fallon, MO 63366
Get Directions | $3.529 | N/A | $3.839 | $3.649 |
| Circle K
1750 Ofallon Rd, O Fallon, MO 63366
Get Directions | $3.559 | N/A | $3.919 | N/A |
| Quik Trip
4750 Highway K, O Fallon, MO 63368
Get Directions | $3.539 | $3.709 | $3.859 | $3.579
Lowest Price |