Round Lake Average Gas Price
| Regular | Mid-Grade | Premium | Diesel | E85 | |
|---|---|---|---|---|---|
| Week Ago Avg. | $3.87 | $4.68 | $5.46 | - | - |
| Month Ago Avg. | $3.78 | $4.68 | $5.34 | - | - |
Highest Recorded Average Gas Price In Round Lake Year to Date
| Price | Date | |
|---|---|---|
| Diesel | $6.6 | 05/01/26 |
| Regular | $3.95 | 05/01/26 |
Top 10 Gas Stations & Cheap Fuel Prices in Round Lake
Marathon in Round Lake (1175 W IL-134)
1175 W IL-134, Round Lake, Illinois,
$3.89
May 29, 2026
0¢ Cashback
Marathon in Round Lake (1175 W IL-134)
1175 W IL-134Round LakeIllinois60073USA
BP in Round Lake (320 W Nippersink Rd)
320 W Nippersink Rd, Round Lake, Illinois,
$4.01
May 29, 2026
0¢ Cashback
BP in Round Lake (320 W Nippersink Rd)
320 W Nippersink RdRound LakeIllinois60073USA
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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.