This area is served by 44 utility providers across 4 categories. The average residential electricity rate here is 9.8¢/kWh. 51.9% of households use electricity as their primary heating fuel.
Utility rates in ZIP 20670 vs. US average
Typical monthly utility bills in ZIP 20670
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.
Natural Gas
Water
Sewer
Internet
Nearby ZIP codes
Frequently asked questions
How do I set up utilities when moving to 20670?
Contact each provider separately before your move-in date. and gas (Washington Gas, (800) 752-7520) 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 20670 compare to the national average?
Residential electricity in California, MD averages 9.8¢/kWh, about 41% below the US average of 16.5¢/kWh and 45% below the Maryland state average of 17.9¢/kWh. Natural gas in Maryland averages $16.14/Mcf, about 11% 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 20670?
No — electricity in California, MD costs about 41% less than the national average. Compared to Maryland overall, rates here are about 45% lower. Local rates from NREL (2023); state and US averages from EIA (2024).
What internet providers are available in 20670?
California, MD has strong broadband coverage. Providers include AT&T (Fixed Wireless up to 10 Mbps), Breezeline (Cable up to 1,000 Mbps), T-Mobile (Fixed Wireless up to 100 Mbps), Verizon (Fixed Wireless up to 200 Mbps). Availability varies by street address. Based on FCC Broadband Data Collection filings.
What county is 20670 in?
ZIP code 20670 is in St. Mary'S County, Maryland.
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.