This area is served by 64 utility providers across 6 categories. The average residential electricity rate here is 15.7¢/kWh. 52% of households use electricity as their primary heating fuel.
Utility rates in ZIP 78664 vs. US average
Typical monthly utility bills in ZIP 78664
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.
Electric
Natural Gas
Water
Sewer
Trash & Recycling
Internet
Nearby ZIP codes
Frequently asked questions
How do I set up utilities when moving to 78664?
Contact each provider separately before your move-in date. Start with electric (Austin Energy) and gas (Atmos Energy Corporation, (888) 286-6700) since those typically need a few business days to activate. Water and sewer are often handled with one call to your local utility. Set up internet last since it may require an installation visit.
How do utility rates in 78664 compare to the national average?
Residential electricity in Round Rock, TX averages 15.7¢/kWh — close to the US average of 16.5¢/kWh. Natural gas in Texas averages $17.98/Mcf, about 24% above the national average. Actual monthly bills vary by home size, insulation, and season. Local rates from NREL; state and US averages from EIA Form 861 (2024); natural gas prices from EIA Form 176 (2024).
Is electricity expensive in 78664?
Electricity costs in Round Rock, TX are close to the national average. Compared to Texas overall, rates here are about 5% higher. Local rates from NREL (2023); state and US averages from EIA (2024).
What internet providers are available in 78664?
Round Rock, TX has strong broadband coverage. Providers include AT&T (Fiber / DSL / Fixed Wireless up to 5,000 Mbps), Astound Broadband (Cable / Fiber / DSL up to 1,500 Mbps), Brightspeed (DSL), Google Fiber (Fiber up to 8,000 Mbps), Hotwire Communications (Fiber up to 5,000 Mbps). Availability varies by street address. Based on FCC Broadband Data Collection filings.
What county is 78664 in?
ZIP code 78664 is in Williamson County, Texas.
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.