O Fallon
Illinois
O Fallon Gas Prices - Find the Lowest Gas Prices in O Fallon, IL
Search for the lowest gasoline prices in O Fallon, IL. Find local O Fallon gas prices and O Fallon gas stations with the best prices to fill up at the pump today
National and Illinois Gas Price Averages
| National Avg. | IL Reg. Avg. | IL Plus Avg. | IL Prem. Avg. | IL Diesel Avg. |
|---|---|---|---|---|
|
$3.150
06/01/2025
|
$3.381
06/01/2025
|
$3.951
06/01/2025
|
$4.417
06/01/2025
|
$3.521
06/01/2025
|
Today's lowest gas prices in Illinois and around O Fallon
| Station | Regular | Plus | Premium | Diesel |
|---|---|---|---|---|
Casey's 1104 S Willow St, Effingham, IL |
$2.87
06/01/2025
|
06/01/2025
|
06/01/2025
|
$3.29
06/01/2025
|
Casey's 1101 S Banker St, Effingham, IL |
$2.87
06/01/2025
|
06/01/2025
|
$3.57
06/01/2025
|
$3.29
06/01/2025
|
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In and Around O Fallon, IL