Costco Gas Prices in Fullerton, California
Latest reported regular prices per gallon from 1 of 1 Costco gas station; most recent report Nov 12, 2026 (UTC). Prices may vary at the pump.
Average Price
$4.89/gal
Lowest Price
$4.89/gal
Highest Price
$4.89/gal
1 Stations Found
Showing 1 cheapest — search or filter to see more
$4.89
900 S HARBOR BLVD
Fullerton
All Costco Gas Stations in Fullerton, California
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