Utility Providers in Keystone, South Dakota

Keystone is served by 79 utility providers across 4 categories covering 1 ZIP code in Pennington County.

Pennington County · Updated May 2026

Utility rates in Keystone vs. US average

Electricity
14.0¢/kWh
↓ 15% below US average (16.5¢)
↑ 9% above SD state average (12.9¢)
Natural gas
$9.32/Mcf
↓ 36% below US average
Local electricity rate from NREL Utility Rate Database (2023), averaged across Keystone-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 Keystone

Electricity$150-$199 (13.7¢–14.3¢/kWh)
Natural gas$200-$249
Water & sewer~$43/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 Keystone heats its homes

5%
31%
65%

5% natural gas · 31% electricity · 65% other fuels

Electric rates in Keystone

Residential rates range from 13.7¢ to 14.3¢ per kWh.

Keystone
14.0¢/kWh
U.S. avg
16.5¢/kWh

Providers include Black Hills Electric Coop, Inc, Black Hills Power, Inc., West River Electric Assn Inc.

This is 15% below the national average of 16.5¢/kWh.

Internet providers in Keystone

Keystone has strong broadband coverage.

Mt. Rushmore Telephone Company
1,000 Mbps
Fiber / DSL
Verizon
300 Mbps
Fixed Wireless
AT&T
100 Mbps
Fixed Wireless
SDN Communications
100 Mbps
Fiber
T-Mobile
100 Mbps
Fixed Wireless

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

Electric 3 providers

Black Hills Electric Coop, Inc
Black Hills Power, Inc.
West River Electric Assn Inc

Water 69 providers

B & J MOBILE HOME PARK
BOXELDER HIGH COUNTRY ASSOCIATION
BRIDLE RIDGE ESTATES
CANYON SPRINGS WATER AND SEWER DISTR
CAVALRY TRAILS HOMEOWNER ASSOCIATION
CHAPEL LANE WATER COMPANY
COLONIAL PINE HILLS SANITARY DISTRIC
COUNTRY ROAD ESTATES
DARLINGTON ESTATES
EDELWEISS MOUNTAIN IMPROVEMENT ASSOC
GOLDEN HILLS HOMES
HAPPY HOLIDAY RV RESORT
HAPPY HOLIDAY WATER ASSOCIATION
HIDDEN VALLEY WATER ASSOCIATION INC
HIGH MEADOWS RANCHETTES
HIGH SHERIDAN RANCH
HISEGA MEADOWS WATER INC
LAKESIDE WATER USERS DISTRICT
NORRIS PEAK WATER USERS ASSOC
NORTHDALE SANITARY DISTRICT
OAKS WATER USERS ASSOCIATION
OWANKA RURAL WATER SYSTEM
PINE CLIFF ESTATES
PINEVIEW WATER ASSOCIATION
PLAINSVIEW MOBILE MANOR
PONDEROSA MOBILE HOME RANCH
PONDEROSA RIDGE
PONDEROSA WATER COMPANY
PRAIRIE ACRES LLC
PRAIRIE ACRES NORTH
PRAIRIE ACRES SOUTH
PRAIRIE HAVEN SUBDIVISION
RAPID CITY MOBILE HOME PARK
RAPID VALLEY SANITARY DISTRICT
RIMROCK HEIGHTS HOMEOWNERS ASSOCIATI
RIMROCK RIDGE WATER ASSOCIATION
RUSHMORE RANCH ESTATES
SHERIDAN LAKE HIGHLANDS, INC.
SIPHON HILL WATER ASSOCIATION
SOUTH CANYON COUNTRY ESTATES
SOUTHERN BLACK HILLS WATER
SPRING CANYON WATER COMPANY
STRATO RIM ESTATES WATER COMPANY
SUNNYSIDE MOBILE HOME PARK II
THE RANCH AT BLACK GAP
THRALL MTN. PROPERTY OWNERS ASSOCIAT
VALLEY HEIGHTS ESTATES INC
WESTBERRY TRAILS WATER USERS ASSOC
WHISPERING PINES WATER ASSOCIATION
WHISPERING WILLOWS
WR/LJ - CREIGHTON PROJECT

Sewer 1 provider

KEYSTONE, TOWN OF

Internet 6 providers

AT&T
Fixed Wireless up to 100 Mbps
CenturyLink
DSL up to 60 Mbps
Mt. Rushmore Telephone Company
Fiber / DSL up to 1,000 Mbps
SDN Communications
Fiber up to 100 Mbps
T-Mobile
Fixed Wireless up to 100 Mbps
Verizon
Fixed Wireless up to 300 Mbps

ZIP codes in Keystone, SD

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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.