Costco Gas Prices in Portland, OR
The Costco station at 4849 NE 138th Ave (near I-84 and Portland Airport) is selling Regular at $4.53/gal as of Aug 18, 2026 — one of the few stations we track that also carries Diesel. Oregon pump prices run above the national average, which makes the Costco discount here worth more per tank than in most states.
Today's Costco Member Gas Prices
Costco Gas Station, 4849 NE 138th Ave, Portland, OR. Prices are for Costco members and are updated when station prices change.
Pumping your own gas in Oregon
Oregon allowed self-serve statewide in 2023, and Costco stations are self-serve: scan your membership card, pay at the pump, and fill up. Attendants are still around if you prefer a hand.
Fuel options
This station carries Regular, Premium and Diesel — all Kirkland Signature, and the gasoline grades are Top Tier certified. Diesel drivers take note: Costco diesel here is usually well below the Portland-area truck-stop price.
Payment
Visa credit cards, most debit cards, and Costco Shop Cards work at the pump; Mastercard, Amex and cash do not.
How we track this price
YepSavings logs every price change at this station daily, so the chart above is the station's actual history rather than a metro average.