Live Costco Gas Prices Across the United States
Track current fuel prices at all 570 Costco gas stations across 47 U.S. states.
Costco operates 570 fuel centers across the United States, spread over 47 states with the largest network in California (121 stations). Nationally, regular gas averages $4.230, premium runs about $0.675 higher at $4.905, and diesel sits at $5.417. Pump prices vary widely by region: Puerto Rico averages the lowest at $1.037 while California averages the highest at $5.287, a roughly $4.250 swing driven by local taxes, fuel-blend rules, and transport costs. Nationally, regular pump prices have climbed about $0.365 over the past month, from $3.865 a month ago. Premium has climbed about $0.423 and diesel has climbed about $0.370 over the same period. Diesel is sold at 63 of the 570 U.S. locations.
30-day U.S. average price trend
Costco is consistently ranked among the cheapest places to fill up in the country, and has repeatedly topped GasBuddy's list of the cheapest U.S. fuel chains. The reason is structural: fuel is a loss-leader that Costco runs on thin margins to pull members into the warehouse, and its bulk purchasing power lets it negotiate hard with suppliers. Independent measurements peg the typical saving at around 20 cents a gallon below the local average. For a driver who burns close to 490 gallons a year, that gap alone can more than cover the cost of membership — we run the break-even math in Is Costco gas worth it?
You need a membership — with one exception. The pump reads your Costco membership card before it dispenses, so fuel is members-only ($65 a year for Gold Star, $130 for Executive). The exception is the Costco Shop Card, a prepaid card that anyone can use at the pump, even without a membership.
It's card-only at the pump. There's no cash at Costco gas stations. In the U.S. the pumps take any Visa credit card, PIN debit, the Costco Shop Card, and Apple Pay or Google Pay linked to a Visa — but not Mastercard, American Express, or Discover. Canada is the mirror image (Mastercard, not Visa), and the UK and Australia follow their own rules. See the full breakdown in our Costco gas payment methods guide.
The fuel is Top Tier. A low price doesn't mean low quality. Costco's Kirkland Signature gasoline is Top Tier certified — it carries more engine-cleaning detergent than the EPA requires, the standard major automakers recommend — and it's refined at the same regional terminals that supply name-brand stations. Most warehouses sell regular and premium; diesel is available at a subset of locations, noted on each station page.
Prices change daily and vary by region. Pump prices track wholesale markets and differ widely from state to state because of local taxes, fuel-blend rules, and transport costs — the figures on this page refresh daily from public sources. To see what Costco charges where you live, check the state leaderboard or find your nearest station. As always, confirm the price at the pump before filling up.
10 cheapest U.S. Costco gas stations right now
| Rank | Station | State | Regular |
|---|---|---|---|
| 1 | Carolina SAN JUAN, PR | PR | $1.037 |
| 2 | North Tulsa TULSA, OK | OK | $2.969 |
| 3 | Evansville EVANSVILLE, IN | IN | $3.169 |
| 4 | Avon AVON, IN | IN | $3.249 |
| 5 | S Indianapolis INDIANAPOLIS, IN | IN | $3.299 |
| 6 | Fortune Park INDIANAPOLIS, IN | IN | $3.339 |
| 7 | N Fort Worth FORT WORTH, TX | TX | $3.339 |
| 8 | Noblesville NOBLESVILLE, IN | IN | $3.349 |
| 9 | Southlake SOUTHLAKE, TX | TX | $3.349 |
| 10 | The Woodlands CONROE, TX | TX | $3.349 |
State leaderboard
Ranked by average regular gas price across all stations in the state.
Top 5 cheapest states
- $1.037
- $3.337
- $3.439
- $3.466
- $3.471
Top 5 most expensive states
- $5.287
- $4.932
- $4.737
- $4.503
- $4.416
Browse by state
From our blog
See all →
U.S. Gas Slid to $3.82, Then Bounced — July 2026 Report
Regular fell 5.4% to a $3.90 Costco average and diesel 11% in 30 days — then hit a $3.82 floor on July 8 and turned back up. The West-led drop, and the reversal.
Canada Gas Bottomed in June, Then Turned Up — July 2026 Report
Regular slipped 1.4% to 158.3¢/L and diesel fell 8% in a V-shaped month that bottomed June 20; the Prairies flipped faller→riser. The data and the why.
UK Fuel Caught the Slide: Diesel Down 8% — July 2026 Report
Petrol fell 4.3% to a 142.5p Costco average and diesel 8.2% to 155.5p as Britain caught the global slide — the RAC’s record diesel month. The data and the why.
Australia Fuel: Diesel −10%, Petrol Cycled Back Up — July 2026 Report
Diesel fell 10.1% to $1.74 while Unleaded 91 ran a full price cycle — down to $1.43 by July 1, then back to $1.53. The cycle, the July excise change, and the why.
Is Costco Gas Open on Holidays? 2026 Holiday Hours
Costco gas follows the warehouse: closed on 7 major holidays — including July 4th, Memorial Day, Labor Day, and Thanksgiving — and open, sometimes on reduced hours, on every other holiday. The full 2026 schedule, plus normal gas hours.
Is Costco Gas Bad for Your Car? What It Does to Your Engine
Cheap doesn’t mean low-quality: Costco gas is Top Tier certified, and an AAA study found Top Tier fuel leaves 19× fewer engine deposits. What it really does to your car.