Carrierlytics County Coverage Guide

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

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

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

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
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 King County, WA

#1

Verizon

Coverage Score 66.4
In King County, WA
Overall
75.5%
4G LTE
75.4% avg. -92 dBm 4G LTE signal where 4G LTE coverage exists: avg. -92 dBm
5G
43.6% avg. -93 dBm 5G signal where 5G coverage exists: avg. -93 dBm
Fast 5G
38.2% avg. -91 dBm Fast 5G signal where Fast 5G coverage exists: avg. -91 dBm
#2

T-Mobile

Coverage Score 63.4
In King County, WA
Overall
54.8%
4G LTE
54.8% avg. -90 dBm 4G LTE signal where 4G LTE coverage exists: avg. -90 dBm
5G
49.7% avg. -86 dBm 5G signal where 5G coverage exists: avg. -86 dBm
Fast 5G
40.8% avg. -83 dBm Fast 5G signal where Fast 5G coverage exists: avg. -83 dBm
#3

AT&T

Coverage Score 48.5
In King County, WA
Overall
56.3%
4G LTE
56.3% avg. -102 dBm 4G LTE signal where 4G LTE coverage exists: avg. -102 dBm
5G
39.7% avg. -107 dBm 5G signal where 5G coverage exists: avg. -107 dBm
Fast 5G
27.0% 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.

City Verizon AT&T T-Mobile
Algona, WA 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 74.3% 100.0% 100.0% 100.0% 100.0%
Ames Lake, WA 100.0% 100.0% 100.0% 97.9% 100.0% 100.0% 25.5% 23.4% 100.0% 100.0% 89.4% 61.7%
Auburn, WA 100.0% 100.0% 99.4% 97.0% 99.9% 99.9% 99.4% 74.6% 99.0% 99.0% 93.1% 82.6%
Baring, WA 100.0% 100.0% 75.9% 51.7% 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% 66.7% 33.3% 100.0% 100.0% 100.0% 100.0%
Bellevue, WA 100.0% 100.0% 96.7% 92.7% 99.7% 99.2% 97.0% 60.4% 99.9% 99.9% 99.9% 97.4%
Black Diamond, WA 100.0% 100.0% 99.5% 88.5% 98.9% 98.9% 90.7% 63.4% 99.5% 99.5% 97.8% 83.1%
Bothell, WA 100.0% 100.0% 96.3% 86.8% 99.5% 99.5% 98.4% 68.9% 100.0% 100.0% 100.0% 99.5%
Boulevard Park, WA 100.0% 100.0% 100.0% 94.1% 100.0% 100.0% 100.0% 61.8% 100.0% 100.0% 100.0% 100.0%
Bryn Mawr-Skyway, WA 100.0% 100.0% 100.0% 97.4% 100.0% 100.0% 96.1% 42.1% 100.0% 100.0% 100.0% 100.0%
Burien, WA 99.6% 99.6% 90.0% 85.0% 98.2% 98.2% 97.1% 73.2% 97.1% 97.1% 93.2% 91.4%
Carnation, WA 100.0% 100.0% 100.0% 96.9% 100.0% 100.0% 21.9% 21.9% 93.8% 93.8% 87.5% 78.1%
Clyde Hill, WA 100.0% 100.0% 100.0% 96.8% 100.0% 100.0% 100.0% 77.4% 100.0% 100.0% 100.0% 100.0%
Cottage Lake, WA 100.0% 100.0% 84.3% 76.9% 99.5% 99.5% 95.0% 55.6% 99.8% 99.8% 94.5% 70.5%
Covington, WA 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 99.4% 81.9% 100.0% 100.0% 99.4% 84.3%
Des Moines, WA 100.0% 100.0% 100.0% 91.0% 100.0% 100.0% 100.0% 75.1% 100.0% 100.0% 100.0% 98.9%
Duvall, WA 100.0% 100.0% 100.0% 97.3% 100.0% 100.0% 89.3% 58.7% 100.0% 100.0% 100.0% 92.0%
East Renton Highlands, WA 100.0% 100.0% 98.7% 94.3% 99.0% 99.0% 80.0% 61.3% 99.7% 99.7% 98.3% 90.3%
Enumclaw, WA 100.0% 100.0% 99.3% 97.2% 99.3% 99.3% 99.3% 96.5% 99.3% 99.3% 99.3% 97.9%
Fairwood, WA 100.0% 100.0% 97.7% 97.7% 99.2% 99.2% 96.9% 70.3% 100.0% 100.0% 99.2% 82.8%
Fall City, WA 100.0% 100.0% 92.4% 87.3% 100.0% 100.0% 53.2% 26.6% 100.0% 100.0% 98.7% 88.6%
Federal Way, WA 100.0% 100.0% 99.7% 98.0% 100.0% 100.0% 99.3% 71.1% 100.0% 100.0% 98.9% 93.8%
Hobart, WA 100.0% 100.0% 96.0% 85.4% 98.1% 98.1% 83.0% 46.2% 94.4% 94.4% 90.8% 73.6%
Hunts Point, WA 100.0% 100.0% 100.0% 87.5% 100.0% 100.0% 100.0% 50.0% 100.0% 100.0% 100.0% 100.0%
Issaquah, WA 100.0% 100.0% 92.0% 82.3% 99.4% 99.1% 96.3% 52.0% 100.0% 100.0% 98.8% 88.1%
Kenmore, WA 100.0% 100.0% 97.1% 94.3% 98.9% 98.9% 97.7% 52.3% 100.0% 100.0% 100.0% 97.1%
Kent, WA 100.0% 100.0% 99.1% 96.6% 99.7% 99.7% 98.9% 69.2% 100.0% 100.0% 100.0% 97.5%
Kirkland, WA 100.0% 100.0% 97.6% 94.8% 99.0% 99.0% 95.6% 63.1% 100.0% 100.0% 99.8% 94.0%
Lake Forest Park, WA 100.0% 100.0% 95.8% 71.9% 97.9% 97.9% 94.8% 55.2% 100.0% 100.0% 99.0% 94.8%
Lake Holm, WA 100.0% 100.0% 100.0% 96.1% 100.0% 100.0% 97.0% 76.2% 99.6% 99.6% 74.0% 52.8%
Lake Marcel-Stillwater, WA 100.0% 100.0% 83.3% 47.2% 100.0% 100.0% 5.6% 5.6% 100.0% 100.0% 97.2% 91.7%
Lake Morton-Berrydale, WA 100.0% 100.0% 99.7% 96.5% 100.0% 100.0% 94.5% 74.3% 99.7% 99.7% 98.3% 71.4%
Lakeland North, WA 100.0% 100.0% 100.0% 94.3% 100.0% 100.0% 100.0% 67.0% 100.0% 100.0% 98.9% 95.5%
Lakeland South, WA 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 75.4% 100.0% 100.0% 93.3% 80.6%
Maple Heights-Lake Desire, WA 100.0% 100.0% 100.0% 99.1% 100.0% 100.0% 68.4% 36.8% 100.0% 100.0% 87.7% 66.7%
Maple Valley, WA 100.0% 100.0% 100.0% 98.8% 99.4% 99.4% 98.8% 73.2% 100.0% 100.0% 99.4% 88.4%
Medina, WA 100.0% 100.0% 100.0% 97.2% 97.2% 97.2% 94.4% 61.1% 100.0% 100.0% 100.0% 97.2%
Mercer Island, WA 100.0% 100.0% 92.8% 85.6% 95.6% 95.0% 90.0% 52.8% 100.0% 100.0% 100.0% 91.1%
Mirrormont, WA 100.0% 100.0% 96.5% 89.9% 95.1% 95.1% 67.5% 39.9% 85.7% 85.7% 78.0% 57.0%
Newcastle, WA 100.0% 100.0% 84.6% 67.5% 100.0% 100.0% 96.7% 55.3% 99.2% 99.2% 99.2% 91.9%
Normandy Park, WA 100.0% 100.0% 95.5% 81.8% 98.5% 98.5% 98.5% 71.2% 100.0% 100.0% 95.5% 86.4%
North Bend, WA 100.0% 100.0% 73.3% 43.1% 100.0% 100.0% 82.8% 71.6% 100.0% 100.0% 100.0% 100.0%
Pacific, WA 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 85.1% 100.0% 100.0% 100.0% 100.0%
Preston, WA 96.2% 96.2% 54.7% 22.6% 94.3% 94.3% 26.4% 15.1% 71.7% 71.7% 52.8% 34.0%
Ravensdale, WA 100.0% 100.0% 97.1% 94.1% 100.0% 100.0% 97.1% 97.1% 100.0% 100.0% 91.2% 85.3%
Redmond, WA 100.0% 100.0% 100.0% 98.5% 99.1% 99.1% 95.3% 61.7% 99.8% 99.8% 97.6% 88.4%
Renton, WA 100.0% 100.0% 96.0% 94.3% 99.7% 99.7% 97.7% 66.8% 100.0% 100.0% 99.8% 98.5%
Riverbend, WA 100.0% 100.0% 31.3% 8.4% 100.0% 100.0% 88.0% 80.7% 100.0% 100.0% 100.0% 97.6%
Riverpoint, WA 100.0% 100.0% 6.3% 3.1% 93.8% 93.8% 75.0% 50.0% 100.0% 100.0% 100.0% 68.8%
Sammamish, WA 100.0% 100.0% 96.0% 89.5% 100.0% 100.0% 96.9% 64.2% 100.0% 100.0% 99.3% 88.8%

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 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.