Spearfish Average Gas Price
| Regular | Mid-Grade | Premium | Diesel | E85 | |
|---|---|---|---|---|---|
| Week Ago Avg. | $3.24 | $3.19 | $3.8 | $3.47 | - |
| Month Ago Avg. | $3.24 | $3.19 | $3.8 | $3.47 | - |
Highest Recorded Average Gas Price In Spearfish Year to Date
| Price | Date | |
|---|---|---|
| Regular | $3.24 | 02/01/26 |
| Diesel | $3.47 | 02/02/26 |
Top 10 Gas Stations & Cheap Fuel Prices in Spearfish
Conoco in Spearfish (611 E Jackson Blvd)
611 E Jackson Blvd, Spearfish, South Dakota,
$2.99
Apr 02, 2026
0¢ Cashback
Phillips 66 in Spearfish (3275 Old Belle Rd)
3275 Old Belle Rd, Spearfish, South Dakota,
$3.01
Apr 02, 2026
0¢ Cashback
Phillips 66 in Spearfish (2615 E Colorado Blvd)
2615 E Colorado Blvd, Spearfish, South Dakota,
$3.01
Apr 02, 2026
0¢ Cashback
Conoco in Spearfish (820 E Colorado Blvd)
820 E Colorado Blvd, Spearfish, South Dakota,
$3.09
Apr 02, 2026
0¢ Cashback
Exxon in Spearfish (546 W Jackson Blvd)
546 W Jackson Blvd, Spearfish, South Dakota,
$3.14
Apr 02, 2026
0¢ Cashback
Cenex in Spearfish (6764 E Colorado Blvd Spearfish SD 57783)
6764 E Colorado Blvd Spearfish SD 57783, Spearfish, South Dakota,
$3.14
Apr 02, 2026
0¢ Cashback
Phillips 66 in Spearfish (706 N Main St )
706 N Main St , Spearfish, South Dakota,
$3.15
Apr 02, 2026
0¢ Cashback
Safeway in Spearfish (1606 North Ave)
1606 North Ave, Spearfish, South Dakota,
$3.49
Apr 02, 2026
0¢ Cashback
Loaf 'N Jug in Spearfish (813 N Main St)
813 N Main St, Spearfish, South Dakota,
$3.58
Apr 02, 2026
0¢ Cashback
Find Cheap Gas Prices By State
Click on the state to view the State details
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.