Gas prices in Boulder-Longmont
Daily metro average from AAA (2026-09-11), per gallon including taxes, for the Boulder-Longmont area of Colorado.
Boulder-Longmont runs $0.21 a gallon above the Colorado average of $4.19. It is the 6 cheapest of 10 Colorado metros AAA tracks.
Nearest Colorado metros on price
The metros immediately either side of Boulder-Longmont in Colorado, so you can see whether paying $4.40 here is normal or not.
| Metro | Regular | vs Boulder-Longmont |
|---|---|---|
| Greeley | $4.29 | −$0.12 |
| Colorado Springs | $4.30 | −$0.10 |
| Denver | $4.32 | −$0.08 |
| Fort Collins-Loveland | $4.33 | −$0.07 |
| Boulder-Longmont | $4.40 | — |
| Grand Junction (CO only) | $4.40 | +$0.00 |
| Durango | $4.51 | +$0.11 |
| Vail | $4.61 | +$0.21 |
| Glenwood Springs | $4.90 | +$0.50 |
State average, trend, station map and calculators.
Your own area's price and a live map of the stations around you.
Frequently asked questions
How much is gas in Boulder-Longmont right now?
Regular gasoline averages $4.40 per gallon across Boulder-Longmont today (AAA metro average, 2026-09-11). Midgrade is $4.86, premium $5.17 and diesel $5.83.
Is gas cheaper in Boulder-Longmont than the rest of Colorado?
No — Boulder-Longmont runs $0.21 a gallon above the Colorado average of $4.19.
Where does Boulder-Longmont rank in Colorado?
Boulder-Longmont is the 6th cheapest of 10 Colorado metros AAA tracks.
Are gas prices in Boulder-Longmont higher than a year ago?
Yes — regular is 38.6% higher than this time last year ($3.17/gal then, $4.40 now).