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 $4.100, premium runs about $0.657 higher at $4.756, and diesel sits at $5.449. The lowest-priced regular pump is at Costco Avondale in Avondale at $3.799, while Surprise in Surprise sits about $0.660 higher. Across the state, regular pump prices have eased about $0.098 over the past month, from $4.198 a month ago. Premium has eased about $0.078 and diesel has climbed about $0.150 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 Avondale in Avondale at $4.429. The cheapest diesel is at Costco N Phoenix in Phoenix at $5.399. 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 |
|---|---|---|
| Avondale Avondale | $3.799 | $4.429 |
| Buckeye Buckeye | $3.799 | $4.429 |
| Scottsdale Scottsdale | $3.899 | $4.499 |
| SW Tucson Tucson | $3.899 | $4.499 |
| Gilbert Gilbert | $3.949 | $4.549 |
| NW Tucson Tucson | $3.959 | $4.799 |
| Prescott Prescott | $3.959 | $4.759 |
| Tucson Tucson | $3.999 | $4.799 |
| Cave Creek Phoenix | $4.059 | $4.759 |
| N Phoenix Phoenix | $4.059 | $4.759 |