⛽ Costco Gas Prices in Idaho
Estimated today · Based on Idaho AAA avg · Source: AAA + historical Costco savings data
Idaho Avg Today
—
per gallon · regular
Est. Costco Price
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~15–30¢ below state avg
⚠️ Costco does not publish real-time prices. Estimated price uses today's Idaho AAA average minus Costco's typical 15–30¢/gal savings. Actual prices vary by location.
Idaho Gas Tax Context
Idaho's state gas tax is approximately 33¢ per gallon — near the national average. This tax applies equally to all stations including Costco, so the 15–30¢ membership discount is on top of the post-tax street price.
Membership required
Costco fuel is available to members only. $65–$130/year · Gold Star ($65/year)
Costco Gas in Idaho — FAQs
How much is gas at Costco in Idaho today?
Based on today's Idaho average of current local prices, Costco in Idaho is estimated at around $a few cents less per gallon. Costco typically prices 15–30¢ per gallon below the state average.
Is Costco gas cheaper than regular gas stations in Idaho?
Yes. Costco gas in Idaho is typically 15–30¢ per gallon cheaper than branded stations. At $the current state average, that's a meaningful per-fill-up savings.
Do you need a membership for Costco gas in Idaho?
Yes. A valid Costco Membership ($65–$130/year) is required to purchase fuel at any Costco location, including those in Idaho.
Why is gas more expensive in Idaho than the national average?
Idaho gas prices are currently near the national average of $—. State gas tax is approximately 33¢/gal.