Colorado Gas Prices
Average retail price · Source: AAA · Updated daily
Today's Average
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per gallon · regular unleaded
Colorado sits in the middle of the national price range, benefiting from proximity to Wyoming oil production and refinery infrastructure while facing higher costs in mountain resort corridors. Denver typically offers competitive prices; mountain towns like Aspen and Vail can run $1+ above the state average.
⛽ Gas Tax: 22¢/gallon
Ranked #18 most expensive nationally
Top Gas Station Chains in Colorado
King Soopers FuelCircle KShellCostcoConoco
Top Colorado Cities for Gas Prices
Colorado Gas Price FAQ
Why is gas so expensive in Colorado mountain towns?
Mountain resort towns have limited station competition, high real estate costs, and difficult fuel delivery logistics — trucks must navigate mountain passes year-round. Aspen, Vail, and Telluride regularly run $1-1.50 above Denver prices.
Where is gas cheapest in Colorado?
King Soopers Fuel Centers (tied to grocery loyalty rewards) offer the best everyday value in Denver and Front Range cities. Costco is also competitive. Prices are consistently lower along I-25 in the Denver-to-Pueblo corridor than in mountain areas.
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Gas Prices by City in Colorado
Colorado Gas Price — Frequently Asked Questions
What is the average gas price in Colorado today?
Colorado gas prices are updated daily from AAA data. Check back for today's average.
Why are gas prices lower in Colorado than the national average?
Colorado benefits from low state fuel taxes (~22¢/gal).
What is Colorado's gas tax?
Colorado's state gas tax is approximately 22¢ per gallon. This is a combined state excise tax and in some states includes local levies. The federal gas tax adds an additional 18.4¢/gal on top of state taxes.
When is the cheapest time to buy gas in Colorado?
Gas prices in Colorado — like across the US — tend to be lowest on Mondays and Tuesdays, when weekly demand is lowest. Prices typically rise Thursday through Saturday as weekend travel demand increases. Avoiding fill-ups on Fridays and Saturdays can save 3–8¢/gal on average. Colorado prices also tend to be lower in late fall and winter when summer-blend fuel requirements end.
Which cities in Colorado have the cheapest gas?
Gas prices vary by city within Colorado based on local competition, distance from fuel terminals, and population density. Use our city pages to compare prices across Colorado: cities farther from major metro areas and distribution hubs often have slightly higher prices due to transport costs, while high-competition suburban areas near major highways tend to be cheapest.