Costco Gas Prices in Seattle, Washington
Latest reported regular prices per gallon from 1 of 1 Costco gas station; most recent report Nov 13, 2026 (UTC). Prices may vary at the pump.
Average Price
$4.45/gal
Lowest Price
$4.45/gal
Highest Price
$4.45/gal
All Costco Gas Stations in Seattle, Washington
Browse every listed location and open its latest reported prices and station details.