T-Mobile currently ranks first for coverage in this area, with a coverage score of 54.0. Compare Wireless Carriers uses FCC broadband map data to estimate and calculate coverage scores. More on that further below.Coverage rankings for Washington
| Rank | Carrier | Score | Overall | 4G LTE | 5G | Fast 5G | Average Signal |
|---|---|---|---|---|---|---|---|
| 1 | T-Mobile | 54.0 | 52.6% | 52.6% | 42.8% | 31.5% | -92 dBm |
| 2 | AT&T | 47.4 | 58.7% | 58.6% | 35.5% | 23.4% | -113 dBm |
| 3 | Verizon | 44.0 | 60.6% | 60.5% | 14.1% | 9.2% | -98 dBm |
Scores include coverage area, network type, and average signal strength.
Cell phone coverage map for Washington
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.
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
T-Mobile
- Overall
- 52.6%
- 4G LTE
- 52.6%
- 5G
- 42.8%
- Fast 5G
- 31.5%
AT&T
- Overall
- 58.7%
- 4G LTE
- 58.6%
- 5G
- 35.5%
- Fast 5G
- 23.4%
Verizon
- Overall
- 60.6%
- 4G LTE
- 60.5%
- 5G
- 14.1%
- Fast 5G
- 9.2%
Coverage varies by neighborhood. Your carrier shouldn’t.
US Mobile lets you switch between all three major networks, so you can choose the one that works best where you actually use your phone.
Pricing, network access, switching terms, and home internet availability may vary.
Coverage by county in Washington
Counties are shown for statewide comparison. Coverage percentages use land-area only coverage.
| County | Verizon | AT&T | T-Mobile |
|---|---|---|---|
| Adams County, WA | 86.0% 86.0% 20.0% 11.8% -96 dBm | 90.8% 90.8% 59.2% 44.7% -113 dBm | 86.2% 86.2% 72.3% 56.8% -91 dBm |
| Asotin County, WA | 48.3% 48.3% 4.1% 2.1% -101 dBm | 42.7% 41.9% 27.9% 11.5% -116 dBm | 41.3% 41.3% 28.3% 17.9% -96 dBm |
| Benton County, WA | 97.5% 97.5% 29.4% 16.3% -94 dBm | 95.3% 95.1% 71.5% 43.0% -113 dBm | 95.2% 95.2% 87.1% 74.6% -89 dBm |
| Chelan County, WA | 35.3% 35.3% 6.4% 3.7% -101 dBm | 31.9% 31.7% 13.9% 8.4% -114 dBm | 28.6% 28.4% 20.9% 14.9% -94 dBm |
| Clallam County, WA | 68.4% 68.4% 3.9% 2.2% -99 dBm | 47.3% 47.1% 26.4% 18.6% -115 dBm | 27.8% 27.5% 24.5% 15.4% -94 dBm |
| Clark County, WA | 87.3% 87.3% 55.1% 42.5% -98 dBm | 84.2% 84.2% 62.1% 41.0% -110 dBm | 73.7% 73.7% 65.4% 52.0% -89 dBm |
| Columbia County, WA | 54.9% 54.9% 6.5% 3.4% -99 dBm | 45.0% 45.0% 0.0% 0.0% -111 dBm | 29.5% 29.5% 20.7% 12.3% -96 dBm |
| Cowlitz County, WA | 31.0% 31.0% 8.4% 5.7% -100 dBm | 44.6% 44.5% 18.6% 10.5% -114 dBm | 29.5% 29.4% 24.0% 16.9% -93 dBm |
| Douglas County, WA | 80.3% 80.3% 16.2% 7.7% -101 dBm | 87.5% 87.5% 50.8% 42.1% -115 dBm | 82.4% 82.4% 60.3% 33.6% -96 dBm |
| Ferry County, WA | 24.4% 24.4% 0.1% 0.0% -102 dBm | 44.1% 44.1% 22.5% 20.1% -116 dBm | 31.4% 31.4% 21.7% 13.7% -96 dBm |
| Franklin County, WA | 81.7% 81.7% 30.9% 19.5% -96 dBm | 76.7% 76.5% 57.1% 39.9% -113 dBm | 86.6% 86.6% 72.3% 59.8% -90 dBm |
| Garfield County, WA | 59.1% 59.1% 0.0% 0.0% -99 dBm | 55.3% 54.8% 10.1% 3.8% -112 dBm | 49.3% 49.3% 33.0% 19.9% -96 dBm |
| Grant County, WA | 91.4% 91.3% 30.5% 15.2% -96 dBm | 94.5% 93.9% 82.7% 48.9% -112 dBm | 91.2% 91.2% 76.8% 61.3% -91 dBm |
| Grays Harbor County, WA | 71.6% 71.6% 5.6% 3.3% -99 dBm | 56.8% 56.7% 4.4% 3.6% -111 dBm | 53.6% 53.6% 37.0% 22.9% -96 dBm |
| Island, WA County | 97.9% 97.9% 38.2% 20.8% -99 dBm | 92.0% 91.9% 58.3% 33.9% -115 dBm | 88.3% 88.3% 79.7% 65.0% -89 dBm |
| Jefferson County, WA | 47.3% 47.1% 4.4% 1.9% -100 dBm | 31.6% 31.6% 17.4% 13.3% -114 dBm | 22.1% 22.0% 17.4% 10.0% -96 dBm |
| King County, WA | 75.5% 75.4% 43.6% 38.2% -96 dBm | 56.3% 56.3% 39.7% 27.0% -109 dBm | 54.8% 54.8% 49.7% 40.8% -88 dBm |
| Kitsap County, WA | 98.0% 97.9% 70.3% 51.9% -100 dBm | 93.6% 93.5% 60.7% 41.4% -113 dBm | 85.9% 85.9% 76.2% 54.4% -93 dBm |
| Kittitas County, WA | 68.2% 68.2% 9.9% 3.8% -99 dBm | 65.4% 65.2% 42.9% 17.7% -113 dBm | 55.8% 55.7% 47.6% 38.2% -91 dBm |
| Klickitat County, WA | 59.7% 59.6% 6.7% 3.4% -100 dBm | 65.7% 65.5% 41.5% 28.3% -115 dBm | 56.4% 56.4% 41.0% 27.0% -96 dBm |
| Lewis County, WA | 49.5% 49.5% 4.3% 2.3% -100 dBm | 40.5% 40.3% 18.6% 13.9% -116 dBm | 43.5% 43.4% 33.9% 22.8% -94 dBm |
| Lincoln County, WA | 87.0% 87.0% 5.9% 2.9% -97 dBm | 87.0% 87.0% 58.2% 40.6% -115 dBm | 90.2% 90.2% 76.0% 53.2% -93 dBm |
| Mason County, WA | 76.2% 76.2% 5.4% 2.8% -99 dBm | 49.7% 49.7% 10.6% 9.0% -114 dBm | 55.6% 55.6% 42.8% 27.2% -95 dBm |
| Okanogan County, WA | 32.5% 32.5% 2.4% 1.2% -100 dBm | 40.8% 40.8% 22.5% 18.8% -115 dBm | 36.3% 36.3% 25.1% 18.2% -94 dBm |
| Pacific County, WA | 47.6% 47.6% 2.1% 1.3% -98 dBm | 51.9% 51.8% 28.5% 22.7% -116 dBm | 42.7% 42.5% 32.4% 19.3% -96 dBm |
| Pend Oreille County, WA | 47.2% 47.2% 0.7% 0.3% -101 dBm | 49.0% 49.0% 34.6% 28.3% -115 dBm | 37.7% 37.6% 32.1% 22.1% -94 dBm |
| Pierce County, WA | 71.3% 71.2% 40.1% 32.0% -98 dBm | 62.3% 62.2% 42.1% 28.9% -111 dBm | 57.0% 56.9% 49.5% 37.2% -91 dBm |
| San Juan County, WA | 74.2% 74.2% 0.6% 0.4% -103 dBm | 54.1% 54.0% 14.1% 9.6% -114 dBm | 89.1% 88.7% 67.6% 48.5% -92 dBm |
| Skagit County, WA | 61.1% 61.1% 11.6% 6.5% -98 dBm | 46.7% 46.5% 28.3% 17.0% -113 dBm | 35.5% 35.4% 31.7% 23.2% -91 dBm |
| Skamania County, WA | 12.7% 12.7% 1.8% 0.5% -102 dBm | 21.5% 21.3% 10.7% 6.6% -116 dBm | 11.7% 11.7% 8.3% 5.2% -96 dBm |
| Snohomish County, WA | 54.4% 54.3% 22.9% 17.9% -97 dBm | 49.9% 49.9% 35.8% 23.0% -112 dBm | 40.2% 40.2% 35.3% 27.7% -90 dBm |
| Spokane County, WA | 94.1% 93.9% 61.5% 48.5% -97 dBm | 92.4% 92.3% 77.8% 43.8% -111 dBm | 87.2% 87.0% 82.4% 66.4% -89 dBm |
| Stevens County, WA | 68.0% 68.0% 5.0% 2.8% -99 dBm | 66.2% 66.1% 44.8% 32.2% -114 dBm | 51.5% 51.4% 41.0% 27.0% -95 dBm |
| Thurston County, WA | 84.2% 84.1% 27.9% 20.7% -99 dBm | 74.6% 74.6% 45.9% 36.3% -114 dBm | 70.5% 70.5% 54.7% 39.5% -93 dBm |
| Wahkiakum County, WA | 62.7% 62.7% 0.2% 0.0% -100 dBm | 46.4% 46.4% 16.2% 8.5% -117 dBm | 24.6% 24.6% 19.7% 13.0% -93 dBm |
| Walla Walla County, WA | 72.9% 72.9% 10.1% 6.2% -96 dBm | 64.5% 64.5% 15.5% 8.9% -112 dBm | 64.3% 64.2% 48.3% 35.0% -94 dBm |
| Whatcom County, WA | 38.5% 38.5% 5.9% 3.3% -96 dBm | 35.2% 35.2% 27.5% 19.9% -111 dBm | 29.5% 29.3% 26.3% 20.8% -89 dBm |
| Whitman County, WA | 76.2% 76.2% 8.1% 4.4% -97 dBm | 72.1% 72.0% 21.9% 15.2% -114 dBm | 69.3% 69.3% 52.4% 34.8% -94 dBm |
| Yakima County, WA | 51.0% 51.0% 17.7% 11.3% -97 dBm | 59.8% 59.8% 42.1% 19.5% -113 dBm | 50.0% 50.0% 43.1% 36.4% -89 dBm |
About The Coverage Data
Coverage and signal estimates are derived by Compare Wireless Carriers 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 Washington 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.