Cheapest Gas in Illinois
Every Illinois metro AAA tracks, ranked from the lowest regular price up, updated 9/5/26. The cheapest gas in Illinois right now is $3.98/gal in Decatur.
Cheapest metroDecatur$3.98/gal regular
| # | Metro | Regular | Diesel |
|---|---|---|---|
| 1 | Decatur | $3.98 | $5.86 |
| 2 | Springfield | $4.06 | $5.83 |
| 3 | Bloomington-Normal | $4.13 | $5.87 |
| 4 | Kankakee-Bradley | $4.13 | $5.97 |
| 5 | Danville | $4.13 | $5.89 |
| 6 | Champaign-Urbana | $4.15 | $5.83 |
| 7 | Rockford | $4.17 | $5.83 |
| 8 | Peoria-Pekin | $4.19 | $5.84 |
| 9 | Quincy | $4.19 | $5.80 |
| 10 | East Saint Louis | $4.21 | $5.85 |
| 11 | Carbondale-Marion | $4.23 | $6.00 |
| 12 | Lake County | $4.28 | $5.66 |
| 13 | Elgin | $4.29 | $5.81 |
| 14 | Davenport-Moline-Rock Island (IL only) | $4.35 | $5.80 |
| 15 | Chicago Metro | $4.45 | $5.88 |
| 16 | City of Chicago | $4.70 | $6.00 |
| 17 | Alexander County | $4.70 | $0.00 |