Carrierlytics County Coverage Guide

Grant County, WA Cell Phone Coverage Map & Network Rankings (2026)

Find the best cell phone network and plan to use in Grant County, WA.

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

Grant County, WA

Cell phone coverage map for Grant County, WA

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 Grant County, WA

#1

T-Mobile

Coverage Score 83.6
In Grant County, WA
Overall
91.2%
4G LTE
91.2% avg. -91 dBm 4G LTE signal where 4G LTE coverage exists: avg. -91 dBm
5G
76.8% avg. -88 dBm 5G signal where 5G coverage exists: avg. -88 dBm
Fast 5G
61.3% avg. -86 dBm Fast 5G signal where Fast 5G coverage exists: avg. -86 dBm
#2

AT&T

Coverage Score 70.7
In Grant County, WA
Overall
94.5%
4G LTE
93.9% avg. -106 dBm 4G LTE signal where 4G LTE coverage exists: avg. -106 dBm
5G
82.7% avg. -111 dBm 5G signal where 5G coverage exists: avg. -111 dBm
Fast 5G
48.9% avg. -109 dBm Fast 5G signal where Fast 5G coverage exists: avg. -109 dBm
#3

Verizon

Coverage Score 62.2
In Grant County, WA
Overall
91.4%
4G LTE
91.3% avg. -95 dBm 4G LTE signal where 4G LTE coverage exists: avg. -95 dBm
5G
30.5% avg. -95 dBm 5G signal where 5G coverage exists: avg. -95 dBm
Fast 5G
15.2% avg. -89 dBm Fast 5G signal where Fast 5G coverage exists: avg. -89 dBm
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Coverage by city in Grant County, WA

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

City Verizon AT&T T-Mobile
Banks Lake South, WA 100.0% 100.0% 98.5% 93.9% 100.0% 100.0% 100.0% 68.2% 100.0% 100.0% 100.0% 100.0%
Beverly, WA 100.0% 100.0% 0.0% 0.0% 80.0% 80.0% 80.0% 80.0% 100.0% 100.0% 100.0% 60.0%
Cascade Valley, WA 100.0% 100.0% 85.4% 72.8% 100.0% 100.0% 100.0% 76.7% 100.0% 100.0% 100.0% 100.0%
Coulee City, WA 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 68.0% 100.0% 100.0% 100.0% 100.0%
Crescent Bar, WA 100.0% 100.0% 0.0% 0.0% 100.0% 100.0% 96.3% 92.6% 100.0% 100.0% 100.0% 100.0%
Desert Aire, WA 100.0% 100.0% 0.0% 0.0% 100.0% 100.0% 100.0% 63.4% 35.5% 35.5% 7.5% 0.0%
Electric City, WA 100.0% 100.0% 0.0% 0.0% 100.0% 100.0% 98.2% 59.6% 100.0% 100.0% 0.0% 0.0%
Ephrata, WA 100.0% 100.0% 99.7% 99.0% 100.0% 100.0% 100.0% 77.9% 100.0% 100.0% 100.0% 100.0%
George, WA 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 94.1% 100.0% 100.0% 100.0% 100.0%
Grand Coulee, WA 100.0% 100.0% 0.0% 0.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 0.0% 0.0%
Hartline, WA 88.9% 88.9% 44.4% 0.0% 100.0% 100.0% 22.2% 11.1% 100.0% 100.0% 22.2% 0.0%
Krupp, WA 94.7% 94.7% 0.0% 0.0% 63.2% 63.2% 21.1% 21.1% 21.1% 21.1% 0.0% 0.0%
Lakeview, WA 100.0% 100.0% 100.0% 87.1% 100.0% 100.0% 100.0% 90.3% 100.0% 100.0% 100.0% 100.0%
Marine View, WA 100.0% 100.0% 0.0% 0.0% 100.0% 100.0% 100.0% 64.0% 100.0% 100.0% 100.0% 84.0%
Marlin, WA 87.0% 87.0% 0.9% 0.0% 87.8% 86.1% 50.1% 18.1% 93.0% 93.0% 68.6% 37.1%
Mattawa, WA 100.0% 100.0% 0.0% 0.0% 100.0% 100.0% 100.0% 90.3% 80.6% 80.6% 48.4% 12.9%
Moses Lake, WA 100.0% 100.0% 97.3% 89.9% 100.0% 100.0% 100.0% 78.2% 100.0% 100.0% 100.0% 100.0%
Moses Lake North, WA 100.0% 100.0% 92.8% 66.7% 100.0% 100.0% 100.0% 90.2% 100.0% 100.0% 100.0% 100.0%
Quincy, WA 100.0% 100.0% 100.0% 95.6% 100.0% 100.0% 97.8% 67.8% 100.0% 100.0% 100.0% 100.0%
Royal City, WA 100.0% 100.0% 0.0% 0.0% 100.0% 100.0% 100.0% 93.9% 33.3% 33.3% 0.0% 0.0%
Schwana, WA 100.0% 100.0% 0.0% 0.0% 85.7% 85.7% 71.4% 71.4% 100.0% 100.0% 85.7% 71.4%
Soap Lake, WA 100.0% 100.0% 75.0% 37.5% 100.0% 100.0% 85.0% 72.5% 100.0% 100.0% 100.0% 100.0%
Stratford, WA 92.5% 92.3% 8.2% 0.0% 88.1% 87.0% 69.5% 38.7% 100.0% 100.0% 97.7% 89.3%
Sunland Estates, WA 83.3% 83.3% 0.0% 0.0% 91.7% 91.7% 66.7% 33.3% 83.3% 83.3% 41.7% 8.3%
Warden, WA 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0%
Wheeler, WA 100.0% 100.0% 100.0% 83.3% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0%
Wilson Creek, WA 82.6% 82.6% 0.0% 0.0% 82.6% 82.6% 43.5% 43.5% 91.3% 91.3% 34.8% 13.0%
Coulee Dam, WA 100.0% 100.0% 0.0% 0.0% 100.0% 100.0% 0.0% 0.0% 100.0% 100.0% 0.0% 0.0%

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 Grant County, WA 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.