Gas prices in Colorado
EIA surveyed Colorado at $4.46 per gallon for regular gasoline in the week of October 26, 2026, 19 cents above the US average of $4.27.
On-highway diesel for Rocky Mountain (PADD 4) is $6.52, 17 cents above the US diesel average of $6.35. EIA runs the diesel survey for California and the regions only, so every other state carries its district figure here. The Road Usage Fee adds a small annual cents-per-gallon climb to the headline excise.
[EIA state series] Series EMM_EPMR_PTE_SCO_DPG · State excise: 30.2 cents/gal · PADD 4
Colorado's pump-price cost stack
Every gallon breaks down into five named slices. Applying the shares to the $4.46 figure above, and to Colorado's own excise rate, the stack looks like this:
Crude / refining / distribution shares estimated from EIA Petroleum Marketing Monthly. Federal excise from FHWA Highway Statistics. State excise from the API Motor Fuel Tax Map and Tax Foundation 2026. [EIA · 26 Oct 2026] [API · 26 Oct 2026]
Border-state comparison
How the neighbours read in the same survey week. Neighbours inside the same EIA district carry the same published figure, which is why several rows can match exactly.
Use the border comparator to compute the per-tank difference where the two states fall in different EIA districts.
Metro-level EIA series for Colorado
EIA runs a separate weekly retail survey in one metro area inside Colorado:
- Denver $4.407/gal EMM_EPMR_PTE_YDEN_DPG
FAQ
What is the current average price of regular gas in Colorado?
EIA surveyed Colorado at $4.46 per gallon for regular gasoline in the week of October 26, 2026, 19 cents above the US average of $4.27. [EIA state series]
Does EIA publish a price for Colorado?
Yes. Colorado is one of the nine states with its own weekly retail gasoline series, EMM_EPMR_PTE_SCO_DPG.
What is Colorado's state gas tax?
30.2 cents per gallon state excise, plus the 18.4 cents federal excise. [API · 26 Oct 2026]