Natural Gas Price in Colorado (2025)
Natural gas in Colorado costs $1.08 per therm on average for homes ($11.17 per Mcf, 2025) – 27% below the US average and the 11th cheapest of 51 states and DC. The average customer's bill works out to about $62 a month over the year.
Source: EIA annual residential price (2025) and residential use per customer (2024). Latest monthly figure: $1.69/therm in July 2026 (monthly prices swing with the season).
Gas bill in Colorado by usage
| Monthly use | Colorado | At US average |
|---|---|---|
| 30 therms (29 ccf) | $32.31 | $44.38 |
| 60 therms (58 ccf) | $64.63 | $88.76 |
| 100 therms (96 ccf) | $107.71 | $147.93 |
| 150 therms (145 ccf) | $161.57 | $221.89 |
Average price includes delivery and fixed charges spread over all gas sold. Roughly: 30 therms is a summer month with a gas water heater and stove; 100–150 therms is a cold-climate winter month with gas heat.
Price trend
Colorado's average residential price rose from $10.58 per Mcf in 2024 to $11.17 in 2025 (+5.6%). Nationally it went from $14.50 to $15.34.
Gas vs electricity in Colorado
One therm of gas holds the same energy as 29.3 kWh of electricity. At Colorado's 17.00¢/kWh, that much electricity costs $4.98 versus $1.08 for the gas. Gas furnaces turn 80–97% of that into heat, while a heat pump delivers 2–3 times the electricity it uses. Run your own numbers with the heat pump vs furnace calculator, and see electricity cost in Colorado.
How Colorado compares
- Michigan: $1.05/therm, about $72/month
- Minnesota: $1.06/therm, about $65/month
- Illinois: $1.08/therm, about $81/month
- Nebraska: $1.10/therm, about $57/month
- US average: $1.48/therm, about $76/month.
Other Mountain states: Idaho ($0.74), Montana ($0.87), New Mexico ($0.95), Utah ($0.98), Wyoming ($1.13), Nevada ($1.27), Arizona ($1.79).
Frequently asked questions
How much is natural gas per therm in Colorado?
Colorado residential customers paid an average of $1.08 per therm in 2025 ($11.17 per thousand cubic feet), including delivery charges. That is 27% below the US average of $1.48 and ranks 11th cheapest of 51.
What is the average gas bill in Colorado?
The average Colorado gas customer used about 66.5 Mcf (690 therms) a year in 2024, which works out to about $62 a month at 2025 prices, averaged over the year. Winter bills are much higher than summer bills.
Has natural gas gone up in Colorado?
The average price rose from $10.58 per Mcf in 2024 to $11.17 in 2025 (+5.6%).
Is gas or electric heat cheaper in Colorado?
Per unit of energy, gas at $1.08/therm compares with $4.98 for the same energy from electricity at 17.00¢/kWh. A heat pump delivers 2–3 units of heat per unit of electricity, so it can still beat gas – compare with your numbers in the heat pump vs furnace calculator.
Sources: EIA natural gas prices; EIA residential deliveries; EIA number of consumers.