This area is served by 8 utility providers across 4 categories.
Utility rates in ZIP 57621 vs. US average
Typical monthly utility bills in ZIP 57621
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.
Electric
Natural Gas
Water
Internet
Nearby ZIP codes
Frequently asked questions
How do I set up utilities when moving to 57621?
Contact each provider separately before your move-in date. Start with electric (Montana-Dakota Utilities Co) and gas (Montana-Dakota Utilities, (800) 638-3278) 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.
What internet providers are available in 57621?
Bullhead, SD has broadband coverage. Providers include Standing Rock Telecom (Fixed Wireless up to 10 Mbps), Verizon (Fixed Wireless up to 50 Mbps), West River Telecommunications Cooperative (Fiber up to 1,000 Mbps). Availability varies by street address. Based on FCC Broadband Data Collection filings.
What county is 57621 in?
ZIP code 57621 is in Corson County, South Dakota.
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.