Residential electricity prices in 80104 in June 2026 averaged approximately 17.13 cents per kilowatthour (¢/kWh), which was about 7% less than the national average rate of 18.34 ¢/kWh (June 2026). [1]
→ Electricity rates listed as zero are not currently available.
See how electricity costs in 80104 differ from the average electricity costs for the U.S. overall. [1]
On a year-over-year basis - from May 2025 to May 2026 - residential electricity prices in 80104 increased approximately 4%, from 15.58 ¢/kWh to 16.16 ¢/kWh. [1]
→ Electricity rates listed as zero are not currently available.
Residential natural gas prices in 80104 in June 2026 averaged 15.05 dollars per thousand cubic feet ($/Mcf), which was approximately 38% less than the national average rate of 24.09 $/Mcf (June 2026). [2]
→ Natural gas prices listed as zero are not currently available.
See the chart below to see a comparison of Castle Rock natural gas prices against U.S. average prices. Compare 80104 (Castle Rock, CO) natural gas costs to overall U.S. average costs. [2]
On a year-over-year basis, residential natural gas prices in Castle Rock (Colorado) decreased approximately 8%, from 13.02 $/Mcf (May 2025) to 11.92 $/Mcf (May 2026). [2]
→ Natural gas prices listed as zero are not currently available.
Sorry, 80104 solar data is not currently available. Please check back later.
See the chart below for a comparison of Castle Rock solar radiation levels against other areas in the U.S. Compare Castle Rock levels against both 1) low average solar radition levels (WA) and also 2) high average solar radiation levels (NV). [3]
→ k/m/d: kilowatt hours per square meter per day.
→ Solar radiation values listed as zero are not currently available.
Households in the United States have benefited from falling energy prices in recent years, which has driven down the cost of living.
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Penn State researchers recently examined microgrids and discovered that they may not always be a wise economic move for communities.
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Through the analysis of publicly available data filed by electricity suppliers, the CT OCC discovered that electricity customers overpaid by $58 million in 2015.
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The ZIP code 80104 is associated with the city of Castle Rock, CO in Douglas County. [4]
To learn more about utility rates & usage in 80104, or for other information related to utilities in Colorado, visit the U.S. Energy Information Administration.
Nearly half of the households in the United States use natural gas as their main heating fuel.
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