Carrierlytics County Coverage Guide

McCook County, SD Cell Phone Coverage Map & Network Rankings (2026)

Find the best cell phone network and plan to use in McCook County, SD.

Using FCC mobile coverage data across cities and ZIP codes in McCook County, SD, Carrierlytics compares the top-performing networks and the cheapest plans that use them.

McCook County, SD

Cell phone coverage map for McCook County, SD

Zoom in for local detail. Tap or click a colored area to see coverage and signal details. On mobile, use two fingers to move the map.

Coverage Key
Less covered More covered
Darker areas mean the carrier covers more of that location.

Map data © OpenStreetMap contributors, © CARTO. Rendered with MapLibre. FCC BDC mobile coverage processed by Carrierlytics.

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Cell phone coverage rankings by network in McCook County, SD

#1

T-Mobile

Coverage Score 91.6
In McCook County, SD
Overall
99.1%
4G LTE
99.1% avg. -91 dBm 4G LTE signal where 4G LTE coverage exists: avg. -91 dBm
5G
95.8% avg. -89 dBm 5G signal where 5G coverage exists: avg. -89 dBm
Fast 5G
78.6% avg. -87 dBm Fast 5G signal where Fast 5G coverage exists: avg. -87 dBm
#2

AT&T

Coverage Score 76.9
In McCook County, SD
Overall
100.0%
4G LTE
100.0% avg. -101 dBm 4G LTE signal where 4G LTE coverage exists: avg. -101 dBm
5G
94.6% avg. -112 dBm 5G signal where 5G coverage exists: avg. -112 dBm
Fast 5G
82.1% avg. -112 dBm Fast 5G signal where Fast 5G coverage exists: avg. -112 dBm
#3

Verizon

Coverage Score 67.0
In McCook County, SD
Overall
99.9%
4G LTE
99.9% avg. -88 dBm 4G LTE signal where 4G LTE coverage exists: avg. -88 dBm
5G
31.3% avg. -95 dBm 5G signal where 5G coverage exists: avg. -95 dBm
Fast 5G
16.1% avg. -90 dBm Fast 5G signal where Fast 5G coverage exists: avg. -90 dBm
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Coverage by city in McCook County, SD

Cities and towns are shown for county-level comparison. Coverage percentages use land-area only coverage.

City Verizon AT&T T-Mobile
Bridgewater, SD 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0%
Canistota, SD 100.0% 100.0% 0.0% 0.0% 100.0% 100.0% 92.9% 50.0% 100.0% 100.0% 71.4% 28.6%
Golden View Colony, SD 100.0% 100.0% 8.3% 0.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0%
Montrose, SD 100.0% 100.0% 0.0% 0.0% 100.0% 100.0% 18.2% 18.2% 100.0% 100.0% 100.0% 36.4%
Orland Colony, SD 100.0% 100.0% 0.0% 0.0% 100.0% 100.0% 100.0% 85.7% 100.0% 100.0% 100.0% 100.0%
Salem, SD 100.0% 100.0% 0.0% 0.0% 100.0% 100.0% 100.0% 100.0% 77.4% 77.4% 51.6% 16.1%
Spencer, SD 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 71.4% 28.6%
Emery, SD 100.0% 100.0% 50.0% 0.0% 100.0% 100.0% 80.0% 80.0% 90.0% 90.0% 80.0% 40.0%

About The Coverage Data

Coverage and signal estimates are derived by Carrierlytics from carrier-reported data in the FCC’s National Broadband Coverage Map, last updated in June 2025. “Percent covered” shows how much of the city or ZIP code area has a carrier signal, whether weak or strong. Signal bars show the estimated average signal strength in areas of McCook County, SD where that carrier has coverage.

If a carrier says you should have service but you do not, run a challenge test with the FCC Mobile Speed Test App. The FCC uses those results to check carrier-submitted coverage data and requires a carrier response when enough tests show a pattern of inaccurate coverage reporting.