Costco Idaho Gas Prices
Find the cheapest Costco gas in Idaho— every fuel center ranked by today's price.
7 Costco fuel centers in 7 cities · 2 of 7 sell diesel
Costco operates 7 fuel centers in Idaho, spread across 7 cities. Across the state, regular gas averages $3.876, premium runs about $0.46 higher at $4.336, and diesel sits at $4.359. The lowest-priced regular pump is at Costco Idaho Falls in Idaho Falls at $3.749, while Twin Falls in Twin Falls sits about $0.25 higher. Across the state, regular pump prices have eased about $0.41 over the past month, from $4.288 a month ago. Premium has eased about $0.43 and diesel has eased about $0.74 over the same period. Diesel is sold at 2 of the 7 Idaho locations.
If your vehicle takes premium, the lowest in Idaho is Costco Idaho Falls in Idaho Falls at $4.199. The cheapest diesel is at Costco Idaho Falls in Idaho Falls at $4.259. 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 Idaho average price trend
Browse Idaho cities
All Idaho stations by price
| Station | Regular | Premium |
|---|---|---|
| Idaho Falls Idaho Falls | $3.749 | $4.199 |
| Nampa Nampa | $3.799 | $4.299 |
| Coeur d Alene Coeur D' Alene | $3.839 | $4.249 |
| Boise Boise | $3.849 | $4.249 |
| Meridian Meridian | $3.899 | $4.299 |
| Pocatello Pocatello | $3.999 | $4.559 |
| Twin Falls Twin Falls | $3.999 | $4.499 |
Frequently asked questions
Which Costco has the cheapest gas in Idaho?
As of the latest daily update, Costco Idaho Falls in Idaho Falls has the cheapest regular gas in Idaho at $3.749 USD per gallon. Pump prices change daily, so check the ranking on this page for the current order.
How much is Costco gas in Idaho right now?
Across the 7 Costco fuel centers in Idaho, regular averages $3.876 USD per gallon, premium $4.336, and diesel $4.359. 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 Idaho?
Yes — 2 of the 7 Costco fuel centers in Idaho sell diesel, averaging $4.359 USD per gallon. Availability varies by warehouse, so check the table above first.
Is Costco gas in Idaho cheaper than average?
Idaho Costco regular averages $3.876, about $0.05 higher 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 Idaho?
Yes — Costco gas stations in Idaho 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 Idaho?
Costco gas stations in Idaho 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 Idaho?
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 Idaho Falls runs 6AM – 10PM on weekdays. Check the individual station page for exact hours before a long drive.