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

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

Cell phone coverage map for King 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
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Darker areas mean the carrier covers more of that location.

Map data © OpenStreetMap contributors, © OpenMapTiles. Basemap by OpenFreeMap. Rendered with MapLibre. FCC BDC mobile coverage processed by CompareWirelessCarriers.

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Cell phone coverage rankings by network in King County, WA

#1

Verizon

Coverage Score 72.7
In King County, WA
Overall
77.0%
4G LTE
76.7% avg. -92 dBm 4G LTE signal where 4G LTE coverage exists: avg. -92 dBm
5G
62.6% avg. -95 dBm 5G signal where 5G coverage exists: avg. -95 dBm
Fast 5G
52.0% avg. -94 dBm Fast 5G signal where Fast 5G coverage exists: avg. -94 dBm
#2

T-Mobile

Coverage Score 64.7
In King County, WA
Overall
55.0%
4G LTE
55.0% avg. -90 dBm 4G LTE signal where 4G LTE coverage exists: avg. -90 dBm
5G
50.2% avg. -86 dBm 5G signal where 5G coverage exists: avg. -86 dBm
Fast 5G
41.7% avg. -83 dBm Fast 5G signal where Fast 5G coverage exists: avg. -83 dBm
#3

AT&T

Coverage Score 49.1
In King County, WA
Overall
57.0%
4G LTE
56.8% avg. -103 dBm 4G LTE signal where 4G LTE coverage exists: avg. -103 dBm
5G
42.5% avg. -107 dBm 5G signal where 5G coverage exists: avg. -107 dBm
Fast 5G
28.3% avg. -104 dBm Fast 5G signal where Fast 5G coverage exists: avg. -104 dBm
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Coverage by city in King County, WA

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

CityVerizonAT&TT-Mobile
Algona, WA 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 68.6% 100.0% 100.0% 100.0% 100.0%
Ames Lake, WA 100.0% 100.0% 100.0% 95.7% 100.0% 100.0% 83.0% 72.3% 100.0% 100.0% 97.9% 95.7%
Auburn, WA 100.0% 100.0% 99.6% 96.7% 99.9% 99.9% 99.0% 66.0% 99.4% 99.4% 98.2% 92.4%
Baring, WA 100.0% 100.0% 75.9% 62.1% 89.7% 89.7% 10.3% 10.3% 100.0% 100.0% 100.0% 100.0%
Beaux Arts Village, 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%
Bellevue, WA 100.0% 100.0% 98.5% 96.0% 99.4% 99.2% 97.1% 59.7% 99.9% 99.9% 99.9% 97.8%
Black Diamond, WA 100.0% 100.0% 99.5% 90.7% 99.5% 99.5% 88.5% 58.5% 100.0% 100.0% 97.8% 82.5%
Bothell, WA 100.0% 100.0% 100.0% 98.7% 99.7% 99.5% 98.9% 60.3% 100.0% 100.0% 100.0% 99.2%
Boulevard Park, WA 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 97.1% 67.6% 100.0% 100.0% 100.0% 100.0%
Bryn Mawr-Skyway, WA 100.0% 100.0% 100.0% 97.4% 100.0% 100.0% 97.4% 46.1% 100.0% 100.0% 100.0% 100.0%
Burien, WA 100.0% 100.0% 97.5% 92.9% 99.6% 99.3% 98.9% 71.8% 98.9% 98.9% 95.0% 92.9%
Carnation, WA 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 53.1% 53.1% 93.8% 93.8% 87.5% 81.3%
Clyde Hill, WA 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 83.9% 100.0% 100.0% 100.0% 100.0%
Cottage Lake, WA 100.0% 100.0% 99.4% 95.0% 99.2% 98.4% 93.9% 57.3% 99.8% 99.8% 97.0% 77.2%
Covington, WA 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 78.9% 100.0% 100.0% 100.0% 88.0%
Des Moines, WA 100.0% 100.0% 99.4% 95.5% 98.3% 98.3% 96.6% 68.9% 100.0% 100.0% 100.0% 98.3%
Duvall, WA 100.0% 100.0% 100.0% 98.7% 100.0% 100.0% 88.0% 44.0% 100.0% 100.0% 100.0% 93.3%
East Renton Highlands, WA 100.0% 100.0% 99.7% 96.3% 99.7% 99.7% 84.3% 69.3% 99.7% 99.7% 97.7% 90.3%
Enumclaw, WA 100.0% 100.0% 99.3% 98.6% 99.3% 99.3% 99.3% 95.0% 99.3% 99.3% 99.3% 98.6%
Fairwood, WA 100.0% 100.0% 100.0% 99.2% 100.0% 99.2% 97.7% 65.6% 100.0% 100.0% 100.0% 92.2%
Fall City, WA 100.0% 100.0% 100.0% 98.7% 100.0% 100.0% 74.7% 49.4% 100.0% 100.0% 98.7% 87.3%
Federal Way, WA 100.0% 100.0% 100.0% 98.2% 99.5% 99.3% 99.0% 68.6% 100.0% 100.0% 99.5% 96.7%
Hobart, WA 99.2% 99.2% 94.8% 82.3% 97.1% 97.1% 86.5% 51.3% 94.6% 94.6% 91.9% 75.3%
Hunts Point, WA 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 87.5% 50.0% 100.0% 100.0% 100.0% 87.5%
Issaquah, WA 100.0% 100.0% 96.3% 92.0% 99.4% 99.4% 94.8% 52.0% 100.0% 100.0% 100.0% 90.2%
Kenmore, WA 100.0% 100.0% 100.0% 97.7% 99.4% 99.4% 97.1% 59.2% 100.0% 100.0% 100.0% 96.0%
Kent, WA 100.0% 100.0% 99.7% 98.5% 99.7% 99.4% 98.1% 66.5% 100.0% 100.0% 99.8% 98.5%
Kirkland, WA 100.0% 100.0% 98.8% 96.4% 98.8% 98.6% 95.0% 63.1% 100.0% 100.0% 99.8% 95.4%
Lake Forest Park, WA 100.0% 100.0% 100.0% 100.0% 97.9% 92.7% 92.7% 45.8% 100.0% 100.0% 99.0% 92.7%
Lake Holm, WA 100.0% 100.0% 100.0% 97.4% 100.0% 100.0% 97.8% 72.7% 99.6% 99.6% 97.4% 80.1%
Lake Marcel-Stillwater, WA 100.0% 100.0% 100.0% 55.6% 94.4% 94.4% 8.3% 8.3% 100.0% 100.0% 97.2% 91.7%
Lake Morton-Berrydale, WA 100.0% 100.0% 100.0% 96.5% 100.0% 100.0% 95.6% 73.8% 100.0% 100.0% 98.3% 77.0%
Lakeland North, WA 100.0% 100.0% 100.0% 94.3% 100.0% 100.0% 98.9% 69.3% 100.0% 100.0% 98.9% 95.5%
Lakeland South, WA 100.0% 100.0% 100.0% 99.3% 100.0% 100.0% 99.3% 69.4% 100.0% 100.0% 100.0% 100.0%
Maple Heights-Lake Desire, WA 100.0% 100.0% 100.0% 91.2% 98.2% 98.2% 78.1% 42.1% 100.0% 100.0% 90.4% 72.8%
Maple Valley, WA 100.0% 100.0% 100.0% 98.2% 100.0% 100.0% 98.8% 84.1% 100.0% 100.0% 99.4% 90.9%
Medina, WA 100.0% 100.0% 100.0% 100.0% 91.7% 91.7% 91.7% 58.3% 100.0% 100.0% 100.0% 100.0%
Mercer Island, WA 100.0% 100.0% 90.0% 83.9% 99.4% 97.2% 95.0% 53.3% 100.0% 100.0% 100.0% 91.7%
Mirrormont, WA 100.0% 100.0% 99.7% 91.3% 93.0% 93.0% 73.4% 44.1% 90.9% 90.9% 79.7% 60.1%
Newcastle, WA 100.0% 99.2% 86.2% 70.7% 99.2% 99.2% 95.1% 56.1% 99.2% 99.2% 99.2% 91.9%
Normandy Park, WA 100.0% 100.0% 98.5% 92.4% 100.0% 100.0% 100.0% 71.2% 100.0% 100.0% 95.5% 81.8%
North Bend, WA 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 88.8% 100.0% 100.0% 100.0% 100.0%
Pacific, WA 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 89.6% 100.0% 100.0% 100.0% 100.0%
Preston, WA 100.0% 100.0% 98.1% 56.6% 100.0% 100.0% 47.2% 18.9% 84.9% 84.9% 67.9% 34.0%
Ravensdale, WA 100.0% 100.0% 97.1% 91.2% 100.0% 100.0% 97.1% 88.2% 97.1% 97.1% 97.1% 79.4%
Redmond, WA 100.0% 100.0% 100.0% 97.6% 97.6% 97.4% 95.1% 57.4% 99.8% 99.8% 98.1% 89.2%
Renton, WA 100.0% 100.0% 99.5% 98.2% 99.4% 99.2% 97.2% 67.2% 100.0% 100.0% 99.8% 98.8%
Riverbend, WA 100.0% 100.0% 100.0% 98.8% 100.0% 100.0% 100.0% 81.9% 100.0% 100.0% 100.0% 97.6%
Riverpoint, WA 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 84.4% 25.0% 100.0% 100.0% 100.0% 62.5%
Sammamish, WA 100.0% 100.0% 95.8% 92.3% 99.3% 98.6% 97.2% 59.0% 100.0% 100.0% 99.5% 90.9%

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 2026. “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 King 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.