Costco Union Gap
2310 Longfibre Rd, Union Gap, Washington 98903-1513
Regular
$4.759
Premium
$5.329
Diesel
N/A
Updated Oct 26, 2026View details →
Costco Gas Prices in Union Gap
Latest reported Costco fuel prices in Union Gap, Washington.
- Stations
- 1
- Avg. Regular
- $4.759
- Lowest Regular
- $4.759
- Avg. Diesel
- N/A