This area is served by 36 utility providers across 4 categories. The average residential electricity rate here is 13.2¢/kWh. 69% of households use electricity as their primary heating fuel.
Utility rates in ZIP 77456 vs. US average
Typical monthly utility bills in ZIP 77456
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
Water
Sewer
Internet
Nearby ZIP codes
Frequently asked questions
How do I set up utilities when moving to 77456?
Contact each provider separately before your move-in date. Start with electric (AEP Texas Central Company) 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 77456 compare to the national average?
Residential electricity in Markham, TX averages 13.2¢/kWh, about 20% below the US average of 16.5¢/kWh and 12% below the Texas state average of 14.9¢/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 77456?
No — electricity in Markham, TX costs about 20% less than the national average. Compared to Texas overall, rates here are about 12% lower. Local rates from NREL (2023); state and US averages from EIA (2024).
What internet providers are available in 77456?
Markham, TX has strong broadband coverage. Providers include AT&T (Fixed Wireless / DSL up to 25 Mbps), Ganado Telephone Company dba YK Communications (Fiber / DSL up to 1,000 Mbps), Sparklight (Cable up to 1,000 Mbps), T-Mobile (Fixed Wireless up to 25 Mbps), Verizon (Fixed Wireless up to 300 Mbps). Availability varies by street address. Based on FCC Broadband Data Collection filings.
What county is 77456 in?
ZIP code 77456 is in Matagorda 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.