Carrierlytics County Coverage Guide

Beaverhead County, MT Cell Phone Coverage Map & Network Rankings (2026)

Find the best cell phone network and plan to use in Beaverhead County, MT.

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

Beaverhead County, MT

Cell phone coverage map for Beaverhead County, MT

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 Beaverhead County, MT

#1

T-Mobile

Coverage Score 36.2
In Beaverhead County, MT
Overall
21.3%
4G LTE
21.3% avg. -95 dBm 4G LTE signal where 4G LTE coverage exists: avg. -95 dBm
5G
17.3% avg. -90 dBm 5G signal where 5G coverage exists: avg. -90 dBm
Fast 5G
12.6% avg. -87 dBm Fast 5G signal where Fast 5G coverage exists: avg. -87 dBm
#2

Verizon

Coverage Score 31.8
In Beaverhead County, MT
Overall
28.8%
4G LTE
28.7% avg. -99 dBm 4G LTE signal where 4G LTE coverage exists: avg. -99 dBm
5G
6.7% avg. -95 dBm 5G signal where 5G coverage exists: avg. -95 dBm
Fast 5G
3.6% avg. -89 dBm Fast 5G signal where Fast 5G coverage exists: avg. -89 dBm
#3

AT&T

Coverage Score 20.5
In Beaverhead County, MT
Overall
26.7%
4G LTE
26.7% avg. -112 dBm 4G LTE signal where 4G LTE coverage exists: avg. -112 dBm
5G
7.3% avg. -113 dBm 5G signal where 5G coverage exists: avg. -113 dBm
Fast 5G
6.3% avg. -112 dBm Fast 5G signal where Fast 5G coverage exists: avg. -112 dBm
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Coverage by city in Beaverhead County, MT

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

City Verizon AT&T T-Mobile
Argenta, MT 14.3% 14.3% 0.0% 0.0% 57.1% 57.1% 0.0% 0.0% N/A N/A N/A N/A
Dell, MT 64.3% 64.3% 0.0% 0.0% 64.3% 64.3% 57.1% 57.1% 100.0% 100.0% 100.0% 100.0%
Dewey, MT N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
Dillon, MT 100.0% 100.0% 0.0% 0.0% 100.0% 100.0% 0.0% 0.0% 100.0% 100.0% 100.0% 100.0%
Glen, MT 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0%
Grant, MT 94.9% 94.9% 0.0% 0.0% 100.0% 100.0% 0.0% 0.0% N/A N/A N/A N/A
Jackson, MT 100.0% 100.0% 0.0% 0.0% 100.0% 100.0% 100.0% 92.0% N/A N/A N/A N/A
Lakeview, MT N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
Lima, MT 100.0% 100.0% 0.0% 0.0% 100.0% 100.0% 100.0% 73.3% 100.0% 100.0% 100.0% 100.0%
Maverick Mountain, MT N/A N/A N/A N/A N/A N/A N/A N/A 2.3% 2.3% 2.3% 2.3%
Polaris, MT 1.9% 1.9% 0.0% 0.0% 14.5% 14.5% 0.0% 0.0% 22.7% 22.7% 19.0% 15.4%
Wisdom, MT 100.0% 100.0% 100.0% 96.2% N/A N/A N/A N/A 100.0% 100.0% 100.0% 100.0%
Wise River, MT N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
Anaconda-Deer Lodge County, MT 49.3% 49.2% 3.9% 1.6% 45.7% 45.7% 33.3% 32.0% 34.2% 34.2% 31.6% 25.1%
Butte-Silver Bow (balance), MT 67.8% 67.8% 11.1% 6.4% 63.2% 63.2% 42.9% 29.4% 54.1% 53.9% 49.3% 38.4%

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 Beaverhead County, MT 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.