Utility Providers in Castle Rock, Washington

Castle Rock is served by 42 utility providers across 5 categories covering 1 ZIP code in Cowlitz County.

Cowlitz County · Updated May 2026

Utility rates in Castle Rock vs. US average

Electricity
9.0¢/kWh
↓ 45% below US average (16.5¢)
↓ 24% below WA state average (11.9¢)
Natural gas
$12.72/Mcf
↓ 12% below US average
Local electricity rate from NREL Utility Rate Database (2023), averaged across Castle Rock-area providers. State and US electric averages from EIA Form 861 (2024). Natural gas prices from EIA Form 176 (2024, $/Mcf). US avg electricity: 16.5¢/kWh · US avg gas: $14.50/Mcf.

Typical monthly utility bills in Castle Rock

Electricity$150-$199 (8.6¢–9.4¢/kWh)
Natural gas$50-$99
Water & sewer~$83/month

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.

How Castle Rock heats its homes

3%
88%
9%

3% natural gas · 88% electricity · 9% other fuels

Electric rates in Castle Rock

Residential rates range from 8.6¢ to 9.4¢ per kWh.

Castle Rock
9.0¢/kWh
U.S. avg
16.5¢/kWh

Castle Rock is served by PacifiCorp.

This is 45% below the national average of 16.5¢/kWh.

Internet providers in Castle Rock

Castle Rock has strong broadband coverage.

Astound Broadband
2,000 Mbps
Fiber / DSL
Xfinity
1,200 Mbps
Cable / Fiber
ToledoTel
1,000 Mbps
Fiber
Verizon
300 Mbps
Fixed Wireless
AT&T
100 Mbps
Fixed Wireless

Availability varies by address. Based on FCC Broadband Data Collection filings.

Electric 1 provider

Natural Gas 1 provider

Cascade Natural Gas

Water 31 providers

Beacon Hill East
BEACON HILL WATER & SEWER DISTRICT
CAMELOT SUBDIVISION
CARROLLS WATER ASSN
CASTLE ROCK MUNICIPAL WATER
COLUMBIA CREST ESTATES
COLUMBIA RIVERFRONT RV PARK
DAVIS TERRACE WATER ASSN
EDGEWATER MOBILE ESTATES
HAZEL DELL MOBILE PARK
LEWIS RIVER GOLF COURSE
LEWIS RIVER RV PARK
LONGVIEW WATER DEPARTMENT
MERWIN VILLAGE/PARK PPL CO
MULKEY MEADOWS 1
PARADISE COVE RESORT & RV PARK
PLEASANT HILL TERRACE SUBDIVISION
RYDERWOOD IMPROVEMENT & SERVICE AS
SANDWOOD HEIGHTS SUBDIVISION
TOUTLE COMMUNITY REGIONAL WATER
TOUTLE RIVER VIEW
VIKING VILLAGE MOBILE HOME PARK
WOODLAND CITY OF

Sewer 1 provider

CASTLE ROCK STP

Internet 8 providers

Astound Broadband
Fiber / DSL up to 2,000 Mbps
AT&T
Fixed Wireless up to 100 Mbps
CenturyLink
DSL up to 80 Mbps
T-Mobile
Fixed Wireless up to 100 Mbps
ToledoTel
Fiber up to 1,000 Mbps
UNITED STATES CELLULAR CORPORATION
Fixed Wireless up to 25 Mbps
Verizon
Fixed Wireless up to 300 Mbps
Xfinity
Cable / Fiber up to 1,200 Mbps

ZIP codes in Castle Rock, WA

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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.