Janesville Average Gas Price
| Regular | Mid-Grade | Premium | Diesel | E85 | |
|---|---|---|---|---|---|
| Week Ago Avg. | $3.7 | $4.22 | $4.76 | $4.89 | $2.88 |
| Month Ago Avg. | $3.7 | $4.22 | $4.76 | $4.89 | $2.88 |
Highest Recorded Average Gas Price In Janesville Year to Date
| Price | Date | |
|---|---|---|
| Diesel | $4.89 | 06/15/26 |
| Regular | $3.7 | 06/15/26 |
Top 10 Gas Stations & Cheap Fuel Prices in Janesville
CITGO in Janesville (1620 W US-14)
1620 W US-14, Janesville, Wisconsin,
$4.14
Jul 18, 2026
0¢ Cashback
Mobil in Janesville (1215 Milton Ave)
1215 Milton Ave, Janesville, Wisconsin,
$4.19
Jul 18, 2026
0¢ Cashback
Mobil in Janesville (1009 N Washington St)
1009 N Washington St, Janesville, Wisconsin,
$4.19
Jul 18, 2026
0¢ Cashback
CITGO in Janesville (2807 W Court St)
2807 W Court St, Janesville, Wisconsin,
$4.23
Jul 18, 2026
0¢ Cashback
Casey's in Janesville (1542 Center Ave)
1542 Center Ave, Janesville, Wisconsin,
$4.26
Jul 18, 2026
0¢ Cashback
Mobil in Janesville (600 W Milwaukee St)
600 W Milwaukee St, Janesville, Wisconsin,
$4.26
Jul 18, 2026
0¢ Cashback
BP in Janesville (951 N WASHINGTON ST)
951 N WASHINGTON ST, Janesville, Wisconsin,
$4.28
Jul 18, 2026
0¢ Cashback
BP in Janesville (3961 MILTON AVE)
3961 MILTON AVE, Janesville, Wisconsin,
$4.29
Jul 18, 2026
0¢ Cashback
Mobil in Janesville (3222 US-14 E)
3222 US-14 E, Janesville, Wisconsin,
$4.29
Jul 18, 2026
0¢ Cashback
CITGO in Janesville (2615 Milton Ave)
2615 Milton Ave, Janesville, Wisconsin,
$4.29
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.