Average Utility Costs in Castle Rock, CO

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

Average monthly utility costs in Castle Rock, CO are about $258.73, 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

$258.73

Estimated average monthly utilities in Castle Rock are ~$258.73 (1,000 kWh + 5,000 gal assumptions). Average water bill estimate: ~$73.53/mo at 5,000 gallons.

Data freshness: last verified 2026-08-16
  • Electric $110.90 (43%)
  • Water $73.53 (28%)
  • Sewer $39.30 (15%)
  • Trash $35.00 (14%)

Utilities here are about 10% higher than the Colorado city average, driven mainly by water.

  • Trash is provided by private haulers; residents choose their own. Our estimate reflects typical rates for the area—contact haulers for exact pricing.

Electric

Confirmed
Provider
Xcel Energy (Colorado)
Base charge
$7.10/mo
Energy rate
$0.1038/kWh
Assumed usage
1000 kWh
Estimated monthly
$110.90
co.my.xcelenergy.com· verified 2026-08-16

Summer energy $0.10380/kWh is used for the 1,000 kWh estimate. Winter energy is $0.08570/kWh. TOU is default; actual bills depend on when you use electricity.

Water

Confirmed
Provider
Castle Rock Water
Base charge
$56.58/mo
Volumetric rate
$3.39/1,000 gal
Assumed usage
5,000 gal
Estimated monthly
$73.53
crgov.com· verified 2026-08-16

Sewer

Confirmed
Method
tiered
Estimated monthly
$39.30

2026 sewer service $8.65 + $6.13/1,000. At 5,000 gal: $8.65 + $30.65 = $39.30.

crgov.com· verified 2026-08-16

Trash

Estimated
Monthly fee
$35.00

No municipal cart program for a typical single-family home here—residents contract with licensed private haulers (Republic, WM, Waste Connections, Apex, and others). Rates vary by hauler and cart size; typical 96-gal weekly ~$30–40/mo. Contact haulers for a quote.

crgov.com· verified 2026-08-16

Check Internet pricing & availability in Castle Rock

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

$258.73

What changes your bill most?

  • Electric is about 43% of your estimated utilities here.
  • Every 100 kWh changes your total by about $10.38.
  • Water increases by about $3.39 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

Wondering if solar makes sense for you? Try our solar payback calculator to find out.

Nearby Cities Utility Costs

Other cities in Douglas County. Click a city for full breakdowns.

CityEst. total/mo
Castle Rock (this)$258.73
Highlands Ranch$279.33
Parker$266.24

More in Colorado

Colorado utility costsDouglas CountyElectric providers in Colorado

FAQ

In Castle Rock, sewer is billed in tiers based on usage, so the rate per gallon changes with volume. Our estimate uses the rate structure from Castle Rock Water – 2026 Rates PDF (sewer) at the assumed 5,000 gallons per month. Your bill will vary with actual usage.
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, taxes, fees, and provider-specific rules. Our estimates use fixed assumed usage (e.g., 1,000 kWh, 5,000 gal) for comparison. Your home may use more or less.
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 Castle Rock with another city side-by-side, or see how we calculate estimates.