ZIP code 21781 covers St. James, Maryland in Washington County. This area is served by 27 utility providers across 4 categories. The average residential electricity rate here is 7.7¢/kWh.
Estimated monthly utility costs
Cost data not available for this ZIP code.
Electric
Natural Gas
Water
Internet
Nearby ZIP codes
Frequently asked questions
How do I set up utilities when moving to 21781?
Contact each provider separately before your move-in date. Start with electric (Hagerstown Light Department) and gas (Columbia Gas Of Washington/Maryland, (888) 460-4332) 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 21781?
No — electricity in St. James, MD costs about 49% less than the national average. Compared to Maryland overall, rates here are about 34% lower. Based on 2023 NREL residential electricity rate data.
What internet providers are available in 21781?
St. James, MD has strong broadband coverage. Providers include AT&T (Fixed Wireless up to 30 Mbps), Antietam Cable (Cable up to 1,300 Mbps), T-Mobile (Fixed Wireless), Verizon (Fixed Wireless up to 300 Mbps). Availability varies by street address. Based on FCC Broadband Data Collection filings.
What county is 21781 in?
ZIP code 21781 is in Washington 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.