Regular gasoline averaged $4.02 a gallon in Colorado in the week of October 5, 2026, −7.4¢ on the week and 33¢ below the US average. Weekly figures from the U.S. Energy Information Administration.
Colorado average, week of October 5, 2026
Regular$4.02/gal−7.4¢ vs last week+$1.19 vs a year ago
Midgrade$4.42/gal−7.2¢ vs last week+$1.20 vs a year ago
Premium$4.77/gal−9.7¢ vs last week+$1.21 vs a year ago
Diesel$6.27/gal−14.0¢ vs last week+$2.60 vs a year ago
Diesel: EIA has no Colorado figure, so this is the Rocky Mountain (PADD 4) average.
US average regular: $4.35 (−11.1¢ on the week). Colorado is 33¢ below it.
Regular per gallon, last 52 weeks: Colorado vs USColoradoUS average
Source: U.S. Energy Information Administration (EIA), weekly retail gasoline and diesel prices, week of October 5, 2026. Prices include taxes and are averages of a survey of stations, published every Monday (Tuesday after a federal holiday); a single station near you can be well above or below them. Via the Roadscore API.
