Duncan Average Gas Price
| Regular | Mid-Grade | Premium | Diesel | E85 | |
|---|---|---|---|---|---|
| Week Ago Avg. | $3.46 | $3.77 | $4.15 | $4.03 | - |
| Month Ago Avg. | $3.07 | $3.49 | $3.93 | $3.66 | - |
Highest Recorded Average Gas Price In Duncan Year to Date
| Price | Date | |
|---|---|---|
| Diesel | $4.04 | 06/15/26 |
| Regular | $3.47 | 06/15/26 |
Top 10 Gas Stations & Cheap Fuel Prices in Duncan
Sunoco in Duncan (719 US-81)
719 U.S. 81, Duncan, Oklahoma,
$3.77
Jul 12, 2026
0¢ Cashback
Conoco in Duncan (502 Plato Rd)
502 Plato Rd, Duncan, Oklahoma,
$4.02
Jul 12, 2026
0¢ Cashback
Sunoco in Duncan (908 N US-81)
908 US-81, Duncan, Oklahoma,
$4.02
Jul 12, 2026
0¢ Cashback
Valero in Duncan (2003 Elk Ave)
2003 W Elk Ave, Duncan, Oklahoma,
$4.02
Jul 12, 2026
0¢ Cashback
Phillips 66 in Duncan (1815 US-81)
1815 N US-81, Duncan, Oklahoma,
$4.02
Jul 12, 2026
0¢ Cashback
Valero in Duncan (1201 W Bois D'Arc Ave)
1201 W Bois D'Arc Ave, Duncan, Oklahoma,
$4.09
Jul 12, 2026
0¢ Cashback
Love's Country Store in Duncan (202 W Main St)
202 W Main St, Duncan, Oklahoma,
$4.48
Jul 12, 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.