Union Average Gas Price
| Regular | Mid-Grade | Premium | Diesel | E85 | |
|---|---|---|---|---|---|
| Week Ago Avg. | $2.79 | $3.41 | $3.83 | $3.5 | - |
| Month Ago Avg. | $2.81 | $3.41 | $3.86 | $3.55 | - |
Highest Recorded Average Gas Price In Union Year to Date
| Price | Date | |
|---|---|---|
| Diesel | $4.17 | 06/15/26 |
| Regular | $3.19 | 06/15/26 |
Top 10 Gas Stations & Cheap Fuel Prices in Union
Murphy USA in Union (309 Buffalo-West Springs Hwy)
309 Buffalo-West Springs Hwy, Union, South Carolina,
$3.89
Jun 19, 2026
0¢ Cashback
Circle K in Union (1315 Lockhart Hwy)
1315 Lockhart Hwy, Union, South Carolina,
$3.95
Jun 19, 2026
0¢ Cashback
Marathon in Union (908 S Duncan Bypass )
908 S Duncan Bypass , Union, South Carolina,
$4.09
Jun 19, 2026
0¢ Cashback
Li'l Cricket in Union (1241 S Duncan Byp)
1241 S Duncan Byp, Union, South Carolina,
$4.21
Jun 19, 2026
0¢ Cashback
Valero in Union (100 Duncan Byp)
100 N Duncan Bypass, Union, South Carolina,
$4.22
Jun 19, 2026
0¢ Cashback
Mobil in Union (439 N Duncan)
439 N Duncan, Union, South Carolina,
$4.39
Jun 19, 2026
0¢ Cashback
Exxon in Union (101 N Duncan Bypass)
101 N Duncan Bypass, Union, South Carolina,
$4.49
Jun 19, 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.