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. |
|---|---|---|---|---|
|
$3.177
05/20/2025
|
$3.408
05/20/2025
|
$3.974
05/20/2025
|
$4.436
05/20/2025
|
$3.530
05/20/2025
|
Today's lowest gas prices in Illinois and around O Fallon
| Station | Regular | Plus | Premium | Diesel |
|---|---|---|---|---|
Casey's 391 S. Hunt Club Rd., Gurnee, IL |
$2.83
05/20/2025
|
05/20/2025
|
$3.63
05/20/2025
|
$3.49
05/20/2025
|
Sam's Club 6570 Grand Ave, Gurnee, IL |
$2.83
05/20/2025
|
05/20/2025
|
05/20/2025
|
$3.08
05/20/2025
|
COVID-19 Resources
Add an Event
See All Events
Local Events
Memorial Weekend Festival at Eckert's Belleville Farm
Saturday, May 24, 2025 from 10:00am to 5:00pm
Belleville, IL
More info »
Memorial Weekend Festival at Eckert's Belleville Farm
Sunday, May 25, 2025 from 10:00am to 5:00pm
Belleville, IL
More info »
Collinsville Memorial Day Firework Festival
Sunday, May 25, 2025 from 4:00pm to 10:00pm
Collinsville, IL
More info »
Memorial Day Service at Polish American War Veterans
Monday, May 26, 2025 at 9:00am
Caseyville, IL
More info »
See All Events
In and Around O Fallon, IL