Utility rates in Castle Rock vs. US average
Typical monthly utility bills in Castle Rock
Figures from U.S. Census ACS 5-year estimates, reflecting households that pay utilities separately from rent. In dense urban areas where heat or hot water is often included in rent, these numbers represent the subset of residents who pay directly.
How Castle Rock heats its homes
79% natural gas · 19% electricity · 2% other fuels
Electric rates in Castle Rock
Residential rates range from 14.5¢ to 15.8¢ per kWh.
Providers include CORE Electric Cooperative, Mountain View Elec Assn, Inc, Public Service Co of Colorado.
This is 8% below the national average of 16.5¢/kWh.
Internet providers in Castle Rock
Castle Rock has strong broadband coverage.
Availability varies by address. Based on FCC Broadband Data Collection filings.
Electric 3 providers
Natural Gas 1 provider
Water 28 providers
Sewer 1 provider
Internet 9 providers
Business Internet 1 provider
These providers offer business-class internet service in this area.
ZIP codes in Castle Rock, CO
Disclaimer: Provider information is sourced from federal databases including HIFLD, EPA SDWIS, FCC Broadband Data, and EIA-861. Utility cost estimates are from the U.S. Census Bureau American Community Survey 5-Year Estimates. Local electric rates are based on 2023 NREL Utility Rate Database data; state and US averages are from EIA Form 861 (2024). Coverage areas are approximate and may not reflect recent changes. Please verify directly with your provider.
Data sources: U.S. Census Bureau, NREL, EIA-861, HIFLD, EPA, FCC. Last updated: May 2026.