ZIP code 20686 is located in St. Mary'S County, Maryland. This area is served by 40 utility providers across 3 categories. The average residential electricity rate here is 9.8¢/kWh.
Estimated monthly utility costs
Cost data not available for this ZIP code.
Natural Gas
Water
Internet
Nearby ZIP codes
Frequently asked questions
How do I set up utilities when moving to 20686?
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.
Is electricity expensive in 20686?
No — electricity in ZIP code 20686 costs about 35% less than the national average. Compared to Maryland overall, rates here are about 17% lower. Based on 2023 NREL residential electricity rate data.
What internet providers are available in 20686?
ZIP code 20686 has broadband coverage. Providers include Breezeline (Cable up to 1,000 Mbps). Availability varies by street address. Based on FCC Broadband Data Collection filings.
What county is 20686 in?
ZIP code 20686 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. Electric rates are based on 2023 NREL data. 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: April 2026.