CostcoDiesel.com is a free tool that helps drivers find every Costco fuel station across the United States and Canada. We track 769 Costco warehouses with fuel stations, including 71 locations with diesel. Search by ZIP code, filter for diesel-only, and get hours, addresses, phone numbers, and driving directions for every Costco gas station.
Costco consistently offers some of the lowest fuel prices in North America — typically 10-30 cents per gallon below competing stations. Whether you drive a diesel truck, RV, or just want cheap gas for your daily commute, our map helps you find the nearest Costco fuel stop fast.
Beyond Costco, we track 600+ gas stations on tribal trust land across 30 states. Because of different tax rules on tribal land, these stations often sell fuel 10–40 cents per gallon cheaper than nearby off-reservation stations — open to everyone, same branded fuel (Shell, Chevron, Sinclair, Conoco). Top states: Arizona (90), Washington (78), New York (58), New Mexico (57), California (48). Read why tribal gas is cheaper →
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