Gas in Colorado averaged $3.13 in 2021 — $3.71 in today’s money
Average, that year
$3.13
In 2025 dollars
$3.71
The average price of a gallon of regular gasoline in Colorado across 2021, 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 2021
Weekly average for regular gasoline. The year’s high was $3.62 the week of August 16, 2021; the low was $2.21 the week of January 4, 2021 — a swing of 64.3%.
View the weekly data (52 weeks)
| Week of | Nominal | 2025 $ |
|---|---|---|
| January 4, 2021 | $2.21 | $2.70 |
| January 11, 2021 | $2.25 | $2.76 |
| January 18, 2021 | $2.29 | $2.81 |
| January 25, 2021 | $2.30 | $2.82 |
| February 1, 2021 | $2.31 | $2.82 |
| February 8, 2021 | $2.36 | $2.89 |
| February 15, 2021 | $2.44 | $2.98 |
| February 22, 2021 | $2.48 | $3.03 |
| March 1, 2021 | $2.63 | $3.19 |
| March 8, 2021 | $2.73 | $3.31 |
| March 15, 2021 | $2.80 | $3.41 |
| March 22, 2021 | $2.90 | $3.52 |
| March 29, 2021 | $2.88 | $3.50 |
| April 5, 2021 | $2.88 | $3.48 |
| April 12, 2021 | $2.89 | $3.49 |
| April 19, 2021 | $2.92 | $3.53 |
| April 26, 2021 | $2.93 | $3.54 |
| May 3, 2021 | $2.93 | $3.51 |
| May 10, 2021 | $2.99 | $3.58 |
| May 17, 2021 | $3.05 | $3.66 |
| May 24, 2021 | $3.08 | $3.69 |
| May 31, 2021 | $3.09 | $3.70 |
| June 7, 2021 | $3.14 | $3.73 |
| June 14, 2021 | $3.18 | $3.78 |
| June 21, 2021 | $3.28 | $3.90 |
| June 28, 2021 | $3.33 | $3.97 |
| July 5, 2021 | $3.44 | $4.07 |
| July 12, 2021 | $3.45 | $4.08 |
| July 19, 2021 | $3.48 | $4.12 |
| July 26, 2021 | $3.50 | $4.14 |
| August 2, 2021 | $3.52 | $4.15 |
| August 9, 2021 | $3.62 | $4.28 |
| August 16, 2021 | $3.62 | $4.28 |
| August 23, 2021 | $3.61 | $4.26 |
| August 30, 2021 | $3.59 | $4.24 |
| September 6, 2021 | $3.58 | $4.21 |
| September 13, 2021 | $3.57 | $4.20 |
| September 20, 2021 | $3.53 | $4.15 |
| September 27, 2021 | $3.52 | $4.14 |
| October 4, 2021 | $3.51 | $4.09 |
| October 11, 2021 | $3.51 | $4.08 |
| October 18, 2021 | $3.50 | $4.08 |
| October 25, 2021 | $3.50 | $4.08 |
| November 1, 2021 | $3.50 | $4.04 |
| November 8, 2021 | $3.49 | $4.03 |
| November 15, 2021 | $3.48 | $4.02 |
| November 22, 2021 | $3.45 | $3.99 |
| November 29, 2021 | $3.41 | $3.94 |
| December 6, 2021 | $3.37 | $3.86 |
| December 13, 2021 | $3.31 | $3.80 |
| December 20, 2021 | $3.29 | $3.77 |
| December 27, 2021 | $3.26 | $3.74 |
Year over year
How 2021 compares, adjusted for inflation
2021 was Colorado’s 12th-most-expensive year for gas on record, adjusted for inflation — equivalently, the 16th-cheapest of 27 years (2000–2026).
Every grade
Colorado fuel prices by grade in 2021
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 | $3.13 | $3.71 | — |
| Midgrade | $3.48 | $4.13 | +34.8¢ |
| Premium | $3.76 | $4.46 | +63.0¢ |
Common questions
Colorado gas prices in 2021, answered
- What was the average price of gas in Colorado in 2021?
- The average price of regular gasoline in Colorado in 2021 was $3.13 per gallon — about $3.71 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 2021?
- Colorado's weekly average for regular gasoline peaked at $3.62 the week of August 16, 2021 and bottomed out at $2.21 the week of January 4, 2021 — a swing of 64.3% across the year.
- Were gas prices in Colorado higher in 2021 than in 2020?
- Adjusted for inflation, regular gasoline in Colorado was more expensive in 2021 than in 2020, up 35.3% year over year.
- How does 2021 rank for gas prices in Colorado history?
- Adjusted for inflation, 2021 was the 12th-most-expensive year for regular gasoline in Colorado out of the 27 years EIA has published weekly prices (2000–2026).