⛽ Costco Gas Prices in Montana
Estimated today · Based on Montana AAA avg · Source: AAA + historical Costco savings data
Montana Avg Today
—
per gallon · regular
Est. Costco Price
—
~15–30¢ below state avg
⚠️ Costco does not publish real-time prices. Estimated price uses today's Montana AAA average minus Costco's typical 15–30¢/gal savings. Actual prices vary by location.
Montana Gas Tax Context
Montana'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 Montana — FAQs
How much is gas at Costco in Montana today?
Based on today's Montana average of current local prices, Costco in Montana 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 Montana?
Yes. Costco gas in Montana 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 Montana?
Yes. A valid Costco Membership ($65–$130/year) is required to purchase fuel at any Costco location, including those in Montana.
Why is gas more expensive in Montana than the national average?
Montana gas prices are currently near the national average of $—. State gas tax is approximately 33¢/gal.