Arizona has 20 Costco warehouses, including 2 with diesel fuel and 20 with gasoline. Use our interactive map to search by ZIP code or city, or browse the diesel station list below.
→ Search for Costco stations near you in Arizona
Costco fuel stations in Arizona consistently offer some of the lowest gas prices in the state, typically undercutting competitors like Chevron, Shell, and QuikTrip by 10 to 30 cents per gallon. With 20 Costco warehouses across the state — from Phoenix to Tucson, Scottsdale, Mesa, and Flagstaff — Arizona members have excellent access to savings at the pump. The Phoenix metro area in particular has a high concentration of Costco locations, making it easy to find affordable fuel wherever you are.
Gas prices in Arizona can vary significantly between the Phoenix metro area and more remote regions like Yuma or Kingman. Costco's uniform pricing strategy within each market means you'll generally find consistent pricing across all Valley locations. Since prices change daily, we don't list specific rates here — use our interactive map to find the nearest station.
Arizona has 2 Costco locations with diesel fuel: the N Phoenix warehouse on 27th Avenue and the Prescott warehouse on State Route 69. The North Phoenix location is particularly convenient for diesel drivers in the Phoenix metro area, serving commuters and commercial vehicles alike. Both locations dispense high-quality ultra-low sulfur diesel that meets or exceeds manufacturer specifications.
For Arizona diesel drivers wondering about fuel quality, Costco diesel is a solid choice — it's additized ULSD that compares favorably with name-brand alternatives. If you're comparing Costco diesel vs. Shell diesel, the main difference is price rather than quality. For long-term diesel engine health, consider pairing Costco diesel with premium fuel additives, especially in Arizona's hot climate.
Costco gas stations in Arizona generally operate from 6:00 AM to 10:00 PM Monday through Friday, with weekend hours typically starting at 6:00 AM and closing earlier around 8:00 PM or 9:00 PM. Summer hours in cities like Phoenix and Tucson may start earlier to accommodate drivers wanting to fuel up before the extreme heat. A Costco membership is required to purchase fuel. Executive members earn 2% cashback on gas purchases (up to $1,000 annually), making the upgrade worthwhile for frequent drivers.
Learn more about fuel policies, payment options, and membership tiers on our FAQ page.
Every Costco warehouse in Arizona that offers diesel fuel:
| Warehouse | Address | Phone | Diesel Hours |
|---|---|---|---|
| Costco Warehouse - N Phoenix | 19001 N 27Th Ave, Phoenix, AZ | (623) 293-4400 | See station details |
| Costco Warehouse - Prescott | 3911 E State Route 69, Prescott, AZ | (928) 541-2203 | See station details |
Costco fuel stations consistently offer some of the lowest diesel prices in Arizona. Costco members can save significantly on diesel for trucks, RVs, and commercial vehicles. Diesel at Costco is typically high-quality, additized ultra-low sulfur diesel (ULSD).