Decatur Average Gas Price
| Regular | Mid-Grade | Premium | Diesel | E85 | |
|---|---|---|---|---|---|
| Week Ago Avg. | $4.05 | $4.54 | $4.9 | $4.97 | $3.79 |
| Month Ago Avg. | $4.05 | $4.54 | $4.9 | $4.97 | $3.79 |
Highest Recorded Average Gas Price In Decatur Year to Date
| Price | Date | |
|---|---|---|
| Diesel | $4.97 | 06/15/26 |
| Regular | $4.05 | 06/15/26 |
Top 10 Gas Stations & Cheap Fuel Prices in Decatur
Thorntons in Decatur (612 E Mound Rd)
612 E Mound Rd, Decatur, Illinois,
$4.28
Jul 18, 2026
0¢ Cashback
Harvest Market in Decatur (1266 N IL-48)
1266 N IL-48, Decatur, Illinois,
$4.29
Jul 18, 2026
0¢ Cashback
Thorntons in Decatur (1707 E Pershing Rd)
1707 E Pershing Rd, Decatur, Illinois,
$4.39
Jul 18, 2026
0¢ Cashback
Kroger in Decatur (3070 N Water St)
3070 N Water St, Decatur, Illinois,
$4.39
Jul 18, 2026
0¢ Cashback
Marathon in Decatur (101 E Pershing Rd)
101 E Pershing Rd, Decatur, Illinois,
$4.39
Jul 18, 2026
0¢ Cashback
Shell in Decatur (3603 E William Street Rd)
3603 E William Street Rd, Decatur, Illinois,
$4.47
Jul 18, 2026
0¢ Cashback
Pilot in Decatur (4030 E Boyd Rd)
4030 E Boyd Rd, Decatur, Illinois,
$4.59
Jul 18, 2026
0¢ Cashback
Love's Travel Stop in Decatur (3925 County Fair Dr)
3925 County Fair Dr, Decatur, Illinois,
$4.59
Jul 18, 2026
0¢ Cashback
BP in Decatur (1108 W ELDORADO ST)
1108 W ELDORADO ST, Decatur, Illinois,
$4.59
Jul 18, 2026
0¢ Cashback
Kroger in Decatur (1818 Airport Plaza)
1818 Airport Plaza, Decatur, Illinois,
$4.59
Jul 18, 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.