Costco Arizona Gas Prices
Find the cheapest Costco gas in Arizona— every fuel center ranked by today's price.
19 Costco fuel centers in 13 cities · 2 of 19 sell diesel
Costco operates 19 fuel centers in Arizona across 13 cities, with the largest cluster in Phoenix (4 stations). Across the state, regular gas averages $3.480, premium runs about $0.53 higher at $4.015, and diesel sits at $4.449. The lowest-priced regular pump is at Costco NW Tucson in Tucson at $3.299, while Prescott in Prescott sits about $0.50 higher. Across the state, regular pump prices have eased about $0.68 over the past month, from $4.157 a month ago. Premium has eased about $0.68 and diesel has eased about $0.73 over the same period. Diesel is sold at 2 of the 19 Arizona locations.
If your vehicle takes premium, the lowest in Arizona is Costco Gilbert in Gilbert at $3.899. The cheapest diesel is at Costco N Phoenix in Phoenix at $4.399. Pump prices shift from one warehouse to the next with local taxes, fuel-blend rules, and transport costs, but Costco fuel is members-only and usually runs below nearby branded stations — which is what keeps these pumps busy.
30-day Arizona average price trend
Browse Arizona cities
All Arizona stations by price
| Station | Regular | Premium |
|---|---|---|
| NW Tucson Tucson | $3.299 | $3.999 |
| SW Tucson Tucson | $3.299 | $3.999 |
| Gilbert Gilbert | $3.399 | $3.899 |
| Mesa Mesa | $3.399 | $3.899 |
| Tucson Tucson | $3.439 | $3.999 |
| Avondale Avondale | $3.499 | $3.999 |
| Buckeye Buckeye | $3.499 | $3.999 |
| Cave Creek Phoenix | $3.499 | $3.999 |
| Chandler Chandler | $3.499 | $3.999 |
| Glendale Glendale | $3.499 | $3.999 |
Frequently asked questions
Which Costco has the cheapest gas in Arizona?
As of the latest daily update, Costco NW Tucson in Tucson has the cheapest regular gas in Arizona at $3.299 USD per gallon. Pump prices change daily, so check the ranking on this page for the current order.
How much is Costco gas in Arizona right now?
Across the 19 Costco fuel centers in Arizona, regular averages $3.480 USD per gallon, premium $4.015, and diesel $4.449. Those are averages of the latest pump prices — individual stations vary, so see the per-station table on this page.
Does Costco sell diesel in Arizona?
Yes — 2 of the 19 Costco fuel centers in Arizona sell diesel, averaging $4.449 USD per gallon. Availability varies by warehouse, so check the table above first.
Is Costco gas in Arizona cheaper than average?
Arizona Costco regular averages $3.480, about $0.34 lower than the national U.S. Costco average of $3.823. Wherever you fill up, Costco fuel is usually priced below nearby branded stations.
Do you need a Costco membership to buy gas in Arizona?
Yes — Costco gas stations in Arizona are members-only. You scan a membership card or a Costco Shop Card at the pump before fueling; non-members can't buy fuel at Costco.
How do you pay for gas at Costco in Arizona?
Costco gas stations in Arizona take any Visa credit card, PIN debit, a Costco Shop Card, and Apple Pay or Google Pay linked to a Visa — but not Mastercard, Amex, Discover, or cash at the pump.
What time do Costco gas stations open in Arizona?
Hours vary by location, and the gas station usually opens earlier and closes later than the warehouse itself. For example, the gas station at Costco NW Tucson runs 6AM – 10PM on weekdays. Check the individual station page for exact hours before a long drive.