Electricity rates in 57335 — Fairfax, SD
Homes in ZIP 57335 pay about 13.1¢ per kWh (Rosebud Electric Coop Inc., Jan–Aug 2026). The South Dakota average is 15.2¢ and the U.S. average 18.2¢ (Aug 2026).
What a month of electricity costs
Monthly cost at the average price of 13.1¢ per kWh. Real bills add or subtract fixed charges, tiers, time-of-use and fuel adjustments.
Where ZIP 57335 is
Outlined: ZIP code area · scroll or pinch to zoomUtilities serving 57335
| Utility | Home price | Avg. bill | Customers in SD |
|---|---|---|---|
| Rosebud Electric Coop Inc. Cooperative | 13.1¢ Jan–Aug 2026 | $116 | 4,856 |
| City of Burke (SD) Municipal · serves Gregory County | 10.6¢ 2024 | $122 | 459 |
Utilities are matched to this ZIP code by NREL’s ZIP–utility table and the EIA service-territory list for Gregory County; county matches may serve only part of the area. Prices are each utility’s average residential revenue per kWh.
South Dakota price trend
Hover or tap the chart for exact monthly values. Source: EIA-861M (monthly, latest months preliminary); forecast: EIA Short-Term Energy Outlook (October 2026) for the West North Central region, which includes Iowa, Kansas, Minnesota, Missouri, Nebraska, North Dakota, South Dakota.
Averages, not a quote. Prices here are what each utility’s residential customers paid on average (revenue ÷ kWh sold, fixed charges included), as reported to the U.S. Energy Information Administration. Your own rate depends on your plan, season and usage — check your bill or your utility’s tariff.
Questions about 57335
How much does electricity cost in 57335?
About 13.1¢ per kWh for homes (Rosebud Electric Coop Inc., Jan–Aug 2026, EIA). At 900 kWh a month that is roughly $118.
Who is the electric utility for 57335?
Rosebud Electric Coop Inc., with about 4,856 residential customers in South Dakota; 1 other utility also serves parts of the area.
Is electricity in SD getting more expensive?
The South Dakota residential average was 15.2¢ per kWh in August 2026, up 9% from a year earlier; the U.S. average was 18.2¢.