Gas prices in Decatur
Gas prices in DecaturDaily metro average from AAA (2026-07-28), per gallon including taxes, for the Decatur area of Illinois.
Regular
$4.15
per gallon · €0.96/L
Midgrade
$4.73
per gallon · €1.10/L
Premium
$5.21
per gallon · €1.21/L
Diesel
$5.10
per gallon · €1.18/L
▲ 1.1% vs last week ($4.10)▲ 28.3% vs a year ago ($3.23)
Nearest Illinois metros on price
The metros immediately either side of Decatur in Illinois, so you can see whether paying $4.15 here is normal or not.
| Metro | Regular | vs Decatur |
|---|---|---|
| Danville | $4.12 | −$0.03 |
| Decatur | $4.15 | — |
| Springfield | $4.15 | +$0.01 |
| Champaign-Urbana | $4.16 | +$0.02 |
| Bloomington-Normal | $4.18 | +$0.03 |
| Rockford | $4.18 | +$0.03 |
All Illinois gas prices →
State average, trend, station map and calculators.
Gas prices near me →
Your own area's price and a live map of the stations around you.
Frequently asked questions
How much is gas in Decatur right now?
Regular gasoline averages $4.15 per gallon across Decatur today (AAA metro average, 2026-07-28). Midgrade is $4.73, premium $5.21 and diesel $5.10.
Is gas cheaper in Decatur than the rest of Illinois?
A Illinois state comparison is unavailable today.
Where does Decatur rank in Illinois?
Decatur is the 2nd cheapest of 17 Illinois metros AAA tracks.
Are gas prices in Decatur higher than a year ago?
Yes — regular is 28.3% higher than this time last year ($3.23/gal then, $4.15 now).