Washington County, ID Cell Phone Coverage Map & Network Rankings (2026)

Find the best cell phone network and plan to use in Washington County, ID

Coverage rankings for Washington County, ID

AT&T currently ranks first for coverage in this area, with a coverage score of 48.4. Compare Wireless Carriers uses FCC broadband map data to estimate and calculate coverage scores. More on that further below.

RankCarrierScoreOverall4G LTE5GFast 5GAverage Signal
1AT&T48.458.9%58.9%34.9%26.5% -113 dBm
2T-Mobile47.645.7%43.6%38.0%25.4% -94 dBm
3Verizon44.567.3%67.1%9.3%6.1% -101 dBm

Scores include coverage area, network type, and average signal strength.

Cell phone coverage map for Washington County, ID

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 Compare Wireless Carriers.

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Cell phone coverage by network in Washington County, ID

#1

AT&T

Coverage Score 48.4
In Washington County, ID
Overall
58.9%
4G LTE
58.9%
5G
34.9%
Fast 5G
26.5%
Average Signal -113 dBm
#2

T-Mobile

Coverage Score 47.6
In Washington County, ID
Overall
45.7%
4G LTE
43.6%
5G
38.0%
Fast 5G
25.4%
Average Signal -94 dBm
#3

Verizon

Coverage Score 44.5
In Washington County, ID
Overall
67.3%
4G LTE
67.1%
5G
9.3%
Fast 5G
6.1%
Average Signal -101 dBm
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Coverage by city in Washington County, ID

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

CityVerizonAT&TT-Mobile
Cambridge, ID 100.0% 100.0% 0.0% 0.0% -82 dBm 100.0% 100.0% 100.0% 100.0% -93 dBm 100.0% 100.0% 100.0% 100.0% -83 dBm
Midvale, ID 100.0% 100.0% 0.0% 0.0% -91 dBm 100.0% 100.0% 100.0% 96.8% -98 dBm 100.0% 100.0% 100.0% 93.7% -89 dBm
Weiser, ID 100.0% 100.0% 98.6% 95.8% -78 dBm 100.0% 100.0% 100.0% 100.0% -97 dBm 100.0% 100.0% 100.0% 100.0% -76 dBm