ZIP code 21790 covers Point of Rocks, Maryland in Frederick County. This area is served by 35 utility providers across 4 categories. The average residential electricity rate here is 7.7¢/kWh.
Estimated monthly utility costs
$75/month
Cost estimates from U.S. Census ACS 5-year data · Shorter bar = lower cost
Electric
Natural Gas
Water
Internet
Nearby ZIP codes
Frequently asked questions
How do I set up utilities when moving to 21790?
Contact each provider separately before your move-in date. Start with electric (The Potomac Edison Company) 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 much do utilities cost per month in 21790?
Total estimated monthly costs are around $75, which is about $308 less than the national average. Electricity is the biggest expense at roughly $75/month. Costs vary by home size, usage, and season. Estimates from U.S. Census ACS data.
Is electricity expensive in 21790?
No — electricity in Point of Rocks, 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 21790?
Point of Rocks, MD has broadband coverage. Providers include AT&T (Fixed Wireless up to 100 Mbps), T-Mobile (Fixed Wireless up to 100 Mbps), Verizon (Fixed Wireless up to 50 Mbps). Availability varies by street address. Based on FCC Broadband Data Collection filings.
What county is 21790 in?
ZIP code 21790 is in Frederick 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.