Gas prices in Boulder & Longmont, CO
Gas prices in Boulder & Longmont, CODaily metro average from AAA (2026-10-26), per gallon including taxes, for AAA’s Boulder-Longmont metro area in Colorado.
Boulder runs $0.13 a gallon above the Colorado average of $4.27. It is the 2 cheapest of 10 Colorado metros AAA tracks.
Nearest Colorado metros on price
The metros immediately either side of Boulder in Colorado, so you can see whether paying $4.40 here is normal or not.
| Metro | Regular | vs Boulder |
|---|---|---|
| Pueblo, CO | $4.35 | −$0.05 |
| Boulder & Longmont, CO | $4.40 | — |
| Greeley, CO | $4.42 | +$0.02 |
| Denver, CO | $4.43 | +$0.02 |
| Grand Junction, CO | $4.45 | +$0.05 |
| Colorado Springs, CO | $4.47 | +$0.06 |
State average, trend, station map and calculators.
Your own area's price and a live map of the stations around you.
Tools for drivers in Boulder
Frequently asked questions
How much is gas in Boulder right now?
Regular gasoline averages $4.40 per gallon across Boulder & Longmont, CO today (AAA metro average, 2026-10-26). Midgrade is $4.86, premium $5.18 and diesel $6.71.
Is gas cheaper in Boulder than the rest of Colorado?
No — Boulder runs $0.13 a gallon above the Colorado average of $4.27.
Where does Boulder rank in Colorado?
Boulder is the 2nd cheapest of 10 Colorado metros AAA tracks.
Are gas prices in Boulder higher than a year ago?
Yes — regular is 49.0% higher than this time last year ($2.95/gal then, $4.40 now).