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. |
|---|---|---|---|---|
|
$3.124
06/10/2025
|
$3.349
06/10/2025
|
$3.899
06/10/2025
|
$4.361
06/10/2025
|
$3.493
06/10/2025
|
Today's lowest gas prices in Illinois and around O Fallon
| Station | Regular | Plus | Premium | Diesel |
|---|---|---|---|---|
Casey's 1104 S Willow St, Effingham, IL |
$2.81
06/10/2025
|
06/10/2025
|
06/10/2025
|
$3.29
06/10/2025
|
Phillips 66 2911 S Banker St, Effingham, IL |
$2.81
06/10/2025
|
06/10/2025
|
06/10/2025
|
06/10/2025
|
COVID-19 Resources
Add an Event
See All Events
Local Events
St. Louis Cardinals vs. Toronto Blue Jays
Tuesday, Jun 10, 2025 at 6:45pm
Saint Louis, MO
More info »
St. Louis Cardinals vs. Toronto Blue Jays
Wednesday, Jun 11, 2025 at 1:15pm
Saint Louis, MO
More info »
Midwest Metal Punks Presents: STL Tornado Relief Fundraiser Show
Wednesday, Jun 11, 2025 at 8:00pm
Saint Louis, MO
More info »
Rockwell Beer Garden Market
Thursday, Jun 12, 2025 from 4:00pm to 7:00pm
Saint Louis, MO
More info »
See All Events
In and Around O Fallon, IL