ZIP code 21123 is located in Maryland. This area is served by 29 utility providers across 2 categories. The average residential electricity rate here is 11.4¢/kWh.
Estimated monthly utility costs
Cost data not available for this ZIP code.
Electric
Water
Frequently asked questions
How do I set up utilities when moving to 21123?
Contact each provider separately before your move-in date. Start with electric (Baltimore Gas & Electric Co) 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 21123?
No — electricity in ZIP code 21123 costs about 24% less than the national average. Based on 2023 NREL residential electricity rate data.
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.