Gas prices in Lake County
Gas prices in Lake CountyDaily metro average from AAA (2026-07-28), per gallon including taxes, for the Lake County area of Illinois.
Regular
$4.22
per gallon · €0.98/L
Midgrade
$4.82
per gallon · €1.12/L
Premium
$5.38
per gallon · €1.25/L
Diesel
$5.11
per gallon · €1.19/L
▲ 3.8% vs last week ($4.06)▲ 26.1% vs a year ago ($3.35)
Nearest Illinois metros on price
The metros immediately either side of Lake County in Illinois, so you can see whether paying $4.22 here is normal or not.
| Metro | Regular | vs Lake County |
|---|---|---|
| Bloomington-Normal | $4.18 | −$0.04 |
| Rockford | $4.18 | −$0.04 |
| Kankakee-Bradley | $4.19 | −$0.02 |
| East Saint Louis | $4.21 | −$0.01 |
| Lake County | $4.22 | — |
| Peoria-Pekin | $4.24 | +$0.02 |
| Carbondale-Marion | $4.24 | +$0.02 |
| Elgin | $4.25 | +$0.03 |
| Davenport-Moline-Rock Island (IL only) | $4.26 | +$0.04 |
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Frequently asked questions
How much is gas in Lake County right now?
Regular gasoline averages $4.22 per gallon across Lake County today (AAA metro average, 2026-07-28). Midgrade is $4.82, premium $5.38 and diesel $5.11.
Is gas cheaper in Lake County than the rest of Illinois?
A Illinois state comparison is unavailable today.
Where does Lake County rank in Illinois?
Lake County is the 9th cheapest of 17 Illinois metros AAA tracks.
Are gas prices in Lake County higher than a year ago?
Yes — regular is 26.1% higher than this time last year ($3.35/gal then, $4.22 now).