Average Utility Costs in Spearfish, SD

Estimated monthly utility costs (1,000 kWh + 5,000 gal)

Average monthly utility costs in Spearfish, SD are about $287.28, based on 1,000 kWh of electricity and 5,000 gallons of water, plus sewer and trash fees. See the full breakdown and sources below.

Total estimated monthly utilities

$287.28

Estimated average monthly utilities in Spearfish are ~$287.28 (1,000 kWh + 5,000 gal assumptions). Average water bill estimate: ~$36.35/mo at 5,000 gallons.

Data freshness: last verified 2026-05-27
  • Electric $161.70 (56%)
  • Water $36.35 (13%)
  • Sewer $65.47 (23%)
  • Trash $23.76 (8%)

Utilities here are about 5% higher than the South Dakota city average, driven mainly by electric rates.

  • In South Dakota, heating and cooling often makes electric the largest share of the bill.
  • City-provided trash is billed at a monthly fee ($23.76 in our estimate).

Water

Confirmed
Provider
City of Spearfish
Base charge
$18.40/mo
Volumetric rate
$3.59/1,000 gal
Assumed usage
5,000 gal
Monthly total
$36.35
spearfish.gov· verified 2026-05-27

Sewer

Confirmed
Method
flat
Monthly total
$65.47
spearfish.gov· verified 2026-05-27

Trash

Confirmed
Monthly fee
$23.76

65- or 95-gal cart: $22.37/mo plus 6.2% city sales tax ≈ $23.76. Effective Jan 1, 2026 per city council action. One cart included; additional carts $11.18 plus tax.

spearfish.gov· verified 2026-05-27

Check Internet pricing & availability in Spearfish

Internet service varies widely—many providers, different plans, introductory offers, and bundles make it hard to compare apples to apples. That's why we don't estimate internet on this page like we do for electric, water, sewer, and trash. Use our tool to compare providers for your address or ZIP code.

Total estimated monthly utilities

$287.28

What changes your bill most?

  • Electric is about 56% of your estimated utilities here.
  • Every 100 kWh changes your total by about $15.47.
  • Water increases by about $3.59 per additional 1,000 gallons.

Assumptions

  • Electric: 1000 kWh/month
  • Water: 5,000 gallons/month

What these labels mean

  • Confirmed — From this area's rate schedule.
  • Benchmark — From an official typical (e.g. state commission 1,000 kWh); not city-specific.
  • Delivery only — Regulated delivery charges only (e.g. Texas); supply varies by plan.
  • Estimated — From other or incomplete sources; use as a rough guide.
Sources

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More in South Dakota

South Dakota utility costsLawrence CountyUtility providers in South Dakota

FAQ

Trash in Spearfish is provided by the city as part of municipal utilities and is billed at a monthly fee. Rates and services are set by the local government; our estimate uses the fee from City of Spearfish – 2026 City Utility Rates (Garbage).
We use base charges and per-unit rates from official provider pages. Electric = base + (rate × assumed kWh). Water = base + (rate per 1,000 gal × assumed gallons / 1,000). Sewer is either a flat fee or a percentage of water. Trash is a fixed monthly fee. See the Methodology page for full formulas.
Actual bills depend on your usage, seasonal rates (NorthWestern, BMU, WMU have summer/winter electric), taxes, fees, and provider-specific rules. Our estimates use fixed assumed usage (e.g., 1,000 kWh, 5,000 gal) for comparison. Sioux Falls trash is via private haulers—rates vary.
Each component shows a 'last verified' date. We aim to update from official sources periodically; always confirm current rates on the provider's site before making decisions.

Learn more

For tips on understanding your bill, comparing cities, and how electric and utility rates work by state, see our blog. Compare Spearfish with another city side-by-side, or see how we calculate estimates.