Costco Arizona Gas Prices
Find the cheapest Costco gas in Arizona— every fuel center ranked by today's price.
20 Costco fuel centers in 13 cities · 2 of 20 sell diesel
Costco operates 20 fuel centers in Arizona across 13 cities, with the largest cluster in Phoenix (5 stations). Across the state, regular gas averages $4.221, premium runs about $0.634 higher at $4.856, and diesel sits at $6.189. The lowest-priced regular pump is at Costco Avondale in Avondale at $3.899, while Prescott in Prescott sits about $0.600 higher. Across the state, regular pump prices have eased about $0.205 over the past month, from $4.426 a month ago. Premium has eased about $0.217 and diesel has eased about $0.060 over the same period. Diesel is sold at 2 of the 20 Arizona locations.
If your vehicle takes premium, the lowest in Arizona is Costco Avondale in Avondale at $4.549. The cheapest diesel is at Costco N Phoenix in Phoenix at $6.099. 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 | $3.899 | $4.549 |
| Buckeye Buckeye | $3.899 | $4.549 |
| SW Tucson Tucson | $3.999 | $4.759 |
| NW Tucson Tucson | $4.059 | $4.899 |
| Tucson Tucson | $4.099 | $4.699 |
| Surprise Surprise | $4.199 | $4.799 |
| Scottsdale Scottsdale | $4.219 | $4.819 |
| Mesa Mesa | $4.239 | $4.839 |
| Queen Creek Queen Creek | $4.239 | $4.839 |
| Gilbert Gilbert | $4.249 | $4.899 |