Illinois Average Gas Price
| Regular | Mid-Grade | Premium | Diesel | E85 | |
|---|---|---|---|---|---|
| Week Ago Avg. | $4.1 | $4.4 | $4.89 | $4.47 | $3.57 |
| Month Ago Avg. | $4.09 | $4.4 | $4.88 | $4.46 | $3.57 |
Top 10 Gas Stations & Cheap Fuel Prices in Illinois
Mr. Fuel in Litchfield ( 4 Corvette Dr)
4 Corvette Dr, Litchfield, Illinois,
$3.03
May 29, 2026
0¢ Cashback
Shell in Rochelle (452 Lake Lida Ln)
452 Lake Lida Ln, Rochelle, Illinois,
$3.26
May 29, 2026
3¢ Cashback
Casey's in Oglesby (100 N Columbia Ave)
100 N Columbia Ave, Oglesby, Illinois,
$3.26
May 29, 2026
0¢ Cashback
BP in Saint Anne (300 South Dixie Hwy)
300 South Dixie Hwy, Saint Anne, Illinois,
$3.27
May 29, 2026
0¢ Cashback
QuikTrip in Bethalto (605 W Bethalto Dr )
605 W Bethalto Dr, Bethalto, Illinois,
$3.27
May 29, 2026
0¢ Cashback
Mobil in Palatine (20235 N Rand Rd)
20235 N Rand Rd, Palatine, Illinois,
$3.29
May 29, 2026
0¢ Cashback
Phillips 66 in Pontoon Beach (3802 IL-111)
3802 IL-111, Pontoon Beach, Illinois,
$3.29
May 29, 2026
0¢ Cashback
BP in Kildeer (20915 N Quentin Rd)
20915 N Quentin Rd, Kildeer, Illinois,
$3.29
May 29, 2026
0¢ Cashback
Casey's in North Utica (2949 IL-178)
2949 IL-178, North Utica, Illinois,
$3.29
May 29, 2026
0¢ Cashback
TA Travel Center in Effingham (1702 W Evergreen Ave)
1702 W Evergreen Ave, Effingham, Illinois,
$3.29
May 29, 2026
0¢ Cashback
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Gas Data Methodology
The fuel prices published in this guide are based on the results of research completed by Way.com’s data team. Using a mix of external and internal data, we analyzed millions of prices across U.S. ZIP codes and globally.