Union Average Gas Price
| Regular | Mid-Grade | Premium | Diesel | E85 | |
|---|---|---|---|---|---|
| Month Ago Avg. | $3.21 | $3.91 | $4.15 | $4.28 | - |
Highest Recorded Average Gas Price In Union Year to Date
| Price | Date | |
|---|---|---|
| Diesel | $4.32 | 09/08/26 |
| Regular | $3.23 | 09/07/26 |
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
Oct 24, 2026
0¢ Cashback
Circle K in Union (1315 Lockhart Hwy)
1315 Lockhart Hwy, Union, South Carolina,
$3.95
Oct 24, 2026
0¢ Cashback
Marathon in Union (908 S Duncan Bypass )
908 S Duncan Bypass , Union, South Carolina,
$4.09
Oct 24, 2026
0¢ Cashback
Valero in Union (100 Duncan Byp)
100 N Duncan Bypass, Union, South Carolina,
$4.22
Oct 24, 2026
0¢ Cashback
Exxon in Union (101 N Duncan Bypass)
101 N Duncan Bypass, Union, South Carolina,
$4.49
Oct 24, 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.