Gas in Colorado averaged $2.55 in 2006 — $4.07 in today’s money
Average, that year
$2.55
In 2025 dollars
$4.07
The average price of a gallon of regular gasoline in Colorado across 2006, shown both as it was at the pump and adjusted for inflation to constant 2025 dollars (CPI-U).
Across the year
How Colorado prices moved through 2006
Weekly average for regular gasoline. The year’s high was $3.03 the week of August 7, 2006; the low was $2.14 the week of November 27, 2006 — a swing of 41.3%.
View the weekly data (52 weeks)
| Week of | Nominal | 2025 $ |
|---|---|---|
| January 2, 2006 | $2.17 | $3.50 |
| January 9, 2006 | $2.28 | $3.68 |
| January 16, 2006 | $2.25 | $3.63 |
| January 23, 2006 | $2.24 | $3.62 |
| January 30, 2006 | $2.25 | $3.64 |
| February 6, 2006 | $2.24 | $3.62 |
| February 13, 2006 | $2.22 | $3.58 |
| February 20, 2006 | $2.19 | $3.53 |
| February 27, 2006 | $2.22 | $3.59 |
| March 6, 2006 | $2.29 | $3.69 |
| March 13, 2006 | $2.33 | $3.75 |
| March 20, 2006 | $2.48 | $4.00 |
| March 27, 2006 | $2.47 | $3.98 |
| April 3, 2006 | $2.52 | $4.04 |
| April 10, 2006 | $2.61 | $4.19 |
| April 17, 2006 | $2.71 | $4.35 |
| April 24, 2006 | $2.83 | $4.53 |
| May 1, 2006 | $2.83 | $4.53 |
| May 8, 2006 | $2.82 | $4.51 |
| May 15, 2006 | $2.82 | $4.51 |
| May 22, 2006 | $2.80 | $4.47 |
| May 29, 2006 | $2.78 | $4.45 |
| June 5, 2006 | $2.78 | $4.43 |
| June 12, 2006 | $2.82 | $4.51 |
| June 19, 2006 | $2.81 | $4.48 |
| June 26, 2006 | $2.79 | $4.46 |
| July 3, 2006 | $2.90 | $4.60 |
| July 10, 2006 | $2.92 | $4.64 |
| July 17, 2006 | $2.93 | $4.65 |
| July 24, 2006 | $2.95 | $4.68 |
| July 31, 2006 | $2.98 | $4.72 |
| August 7, 2006 | $3.03 | $4.79 |
| August 14, 2006 | $3.03 | $4.78 |
| August 21, 2006 | $3.00 | $4.73 |
| August 28, 2006 | $2.96 | $4.67 |
| September 4, 2006 | $2.89 | $4.59 |
| September 11, 2006 | $2.83 | $4.50 |
| September 18, 2006 | $2.74 | $4.35 |
| September 25, 2006 | $2.65 | $4.21 |
| October 2, 2006 | $2.55 | $4.06 |
| October 9, 2006 | $2.43 | $3.88 |
| October 16, 2006 | $2.33 | $3.72 |
| October 23, 2006 | $2.25 | $3.59 |
| October 30, 2006 | $2.21 | $3.52 |
| November 6, 2006 | $2.18 | $3.47 |
| November 13, 2006 | $2.16 | $3.44 |
| November 20, 2006 | $2.15 | $3.43 |
| November 27, 2006 | $2.14 | $3.42 |
| December 4, 2006 | $2.17 | $3.45 |
| December 11, 2006 | $2.18 | $3.45 |
| December 18, 2006 | $2.17 | $3.44 |
| December 25, 2006 | $2.18 | $3.45 |
Year over year
How 2006 compares, adjusted for inflation
2006 was Colorado’s 8th-most-expensive year for gas on record, adjusted for inflation — equivalently, the 20th-cheapest of 27 years (2000–2026).
Every grade
Colorado fuel prices by grade in 2006
Year-average price per grade. Premium figures are the spread drivers paid for higher-octane fuel that year.
| Grade | Avg / gal | 2025 $ | vs. regular |
|---|---|---|---|
| Regular | $2.55 | $4.07 | — |
| Midgrade | $2.66 | $4.24 | +10.8¢ |
| Premium | $2.75 | $4.40 | +20.8¢ |
Common questions
Colorado gas prices in 2006, answered
- What was the average price of gas in Colorado in 2006?
- The average price of regular gasoline in Colorado in 2006 was $2.55 per gallon — about $4.07 in 2025 dollars after adjusting for inflation, according to U.S. Energy Information Administration weekly data.
- How high did gas prices get in Colorado during 2006?
- Colorado's weekly average for regular gasoline peaked at $3.03 the week of August 7, 2006 and bottomed out at $2.14 the week of November 27, 2006 — a swing of 41.3% across the year.
- Were gas prices in Colorado higher in 2006 than in 2005?
- Adjusted for inflation, regular gasoline in Colorado was more expensive in 2006 than in 2005, up 9.4% year over year.
- How does 2006 rank for gas prices in Colorado history?
- Adjusted for inflation, 2006 was the 8th-most-expensive year for regular gasoline in Colorado out of the 27 years EIA has published weekly prices (2000–2026).