Carrierlytics County Coverage Guide

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

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

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

Snohomish County, WA

Cell phone coverage map for Snohomish 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 Snohomish County, WA

#1

T-Mobile

Coverage Score 51.6
In Snohomish County, WA
Overall
40.2%
4G LTE
40.2% avg. -92 dBm 4G LTE signal where 4G LTE coverage exists: avg. -92 dBm
5G
35.3% avg. -88 dBm 5G signal where 5G coverage exists: avg. -88 dBm
Fast 5G
27.7% avg. -84 dBm Fast 5G signal where Fast 5G coverage exists: avg. -84 dBm
#2

Verizon

Coverage Score 49.4
In Snohomish County, WA
Overall
54.4%
4G LTE
54.3% avg. -94 dBm 4G LTE signal where 4G LTE coverage exists: avg. -94 dBm
5G
22.9% avg. -93 dBm 5G signal where 5G coverage exists: avg. -93 dBm
Fast 5G
17.9% avg. -91 dBm Fast 5G signal where Fast 5G coverage exists: avg. -91 dBm
#3

AT&T

Coverage Score 41.9
In Snohomish County, WA
Overall
49.9%
4G LTE
49.9% avg. -106 dBm 4G LTE signal where 4G LTE coverage exists: avg. -106 dBm
5G
35.8% avg. -110 dBm 5G signal where 5G coverage exists: avg. -110 dBm
Fast 5G
23.0% avg. -107 dBm Fast 5G signal where Fast 5G coverage exists: avg. -107 dBm
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Coverage by city in Snohomish County, WA

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

City Verizon AT&T T-Mobile
Alderwood Manor, WA 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 57.7% 100.0% 100.0% 100.0% 100.0%
Arlington, WA 100.0% 100.0% 82.2% 57.1% 100.0% 100.0% 99.6% 76.0% 100.0% 100.0% 100.0% 97.5%
Arlington Heights, WA 99.6% 99.6% 49.2% 23.9% 98.7% 98.7% 97.1% 73.1% 97.1% 97.1% 93.3% 79.4%
Bothell East, WA 100.0% 100.0% 100.0% 98.1% 100.0% 100.0% 100.0% 68.5% 100.0% 100.0% 100.0% 100.0%
Bothell West, WA 100.0% 100.0% 100.0% 95.6% 100.0% 100.0% 100.0% 69.9% 100.0% 100.0% 100.0% 100.0%
Brier, WA 100.0% 100.0% 100.0% 98.4% 100.0% 100.0% 100.0% 62.3% 100.0% 100.0% 100.0% 100.0%
Bryant, WA 97.1% 97.1% 24.0% 4.0% 100.0% 100.0% 89.1% 22.3% 100.0% 100.0% 97.1% 78.9%
Bunk Foss, WA 100.0% 100.0% 100.0% 98.1% 99.1% 99.1% 95.3% 64.2% 100.0% 100.0% 99.1% 86.8%
Canyon Creek, WA 87.3% 87.3% 37.6% 19.7% 75.1% 75.1% 69.4% 50.3% 68.2% 68.2% 48.6% 23.7%
Cathcart, WA 100.0% 100.0% 95.5% 88.2% 100.0% 100.0% 100.0% 67.3% 99.1% 99.1% 99.1% 90.0%
Cavalero, WA 100.0% 100.0% 100.0% 87.5% 100.0% 100.0% 100.0% 43.8% 100.0% 100.0% 100.0% 100.0%
Chain Lake, WA 99.7% 99.7% 42.2% 25.6% 97.7% 97.3% 74.1% 51.5% 99.7% 99.7% 95.3% 81.4%
Clearview, WA 100.0% 100.0% 99.2% 95.4% 100.0% 100.0% 100.0% 60.0% 100.0% 100.0% 100.0% 89.2%
Darrington, WA 100.0% 100.0% 66.0% 28.0% 100.0% 100.0% 0.0% 0.0% 100.0% 100.0% 100.0% 100.0%
Eastmont, WA 100.0% 100.0% 98.6% 94.4% 100.0% 100.0% 99.3% 54.2% 100.0% 100.0% 100.0% 92.3%
Edmonds, WA 100.0% 100.0% 97.2% 94.4% 100.0% 100.0% 97.2% 74.5% 100.0% 100.0% 100.0% 96.8%
Esperance, WA 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 72.2% 100.0% 100.0% 100.0% 100.0%
Everett, WA 98.1% 98.1% 85.2% 83.0% 96.5% 96.4% 90.0% 53.7% 88.4% 88.4% 86.9% 85.1%
Fobes Hill, WA 100.0% 100.0% 100.0% 99.2% 89.4% 87.9% 84.1% 42.4% 100.0% 100.0% 97.0% 90.9%
Gold Bar, WA 100.0% 100.0% 0.0% 0.0% 100.0% 100.0% 100.0% 96.6% 100.0% 100.0% 100.0% 93.1%
Granite Falls, WA 100.0% 100.0% 62.3% 47.5% 98.4% 98.4% 90.2% 54.1% 100.0% 100.0% 100.0% 100.0%
Hat Island, WA 100.0% 100.0% 77.8% 61.1% 100.0% 100.0% 94.4% 16.7% 100.0% 100.0% 100.0% 100.0%
High Bridge, WA 100.0% 100.0% 82.8% 52.0% 100.0% 100.0% 92.4% 62.6% 96.5% 96.5% 83.3% 57.1%
Index, WA 28.6% 28.6% 0.0% 0.0% 85.7% 85.7% 0.0% 0.0% N/A N/A N/A N/A
Kayak Point, WA 100.0% 100.0% 15.9% 3.2% 98.7% 98.7% 65.0% 39.5% 84.7% 84.7% 67.5% 47.1%
Lake Bosworth, WA 100.0% 100.0% 20.4% 6.5% 100.0% 100.0% 58.3% 28.7% 75.9% 75.9% 57.4% 27.8%
Lake Cassidy, WA 100.0% 100.0% 66.4% 55.6% 99.3% 99.3% 88.5% 58.3% 99.0% 99.0% 96.3% 75.9%
Lake Goodwin, WA 100.0% 100.0% 37.6% 19.1% 100.0% 100.0% 99.4% 83.4% 100.0% 100.0% 100.0% 93.0%
Lake Ketchum, WA 100.0% 100.0% 6.8% 2.3% 92.0% 92.0% 51.1% 14.8% 95.5% 95.5% 47.7% 25.0%
Lake Roesiger, WA 100.0% 100.0% 1.0% 0.0% 100.0% 100.0% 99.0% 94.2% 99.0% 99.0% 84.6% 51.9%
Lake Stevens, WA 100.0% 100.0% 100.0% 99.3% 100.0% 100.0% 100.0% 82.2% 100.0% 100.0% 100.0% 98.2%
Lake Stickney, WA 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 79.3% 100.0% 100.0% 100.0% 98.3%
Larch Way, WA 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 62.5% 100.0% 100.0% 100.0% 100.0%
Lochsloy, WA 100.0% 100.0% 46.9% 19.8% 99.0% 99.0% 72.9% 25.6% 95.2% 95.2% 70.5% 44.4%
Lynnwood, WA 99.5% 99.5% 99.5% 98.2% 100.0% 100.0% 99.5% 71.4% 100.0% 100.0% 100.0% 99.1%
Machias, WA 100.0% 100.0% 97.2% 62.0% 100.0% 100.0% 98.6% 63.4% 100.0% 100.0% 100.0% 95.8%
Maltby, WA 100.0% 100.0% 97.8% 93.1% 99.8% 99.8% 98.1% 68.8% 100.0% 100.0% 99.1% 88.8%
Martha Lake, WA 100.0% 100.0% 96.9% 91.4% 100.0% 100.0% 100.0% 73.4% 100.0% 100.0% 100.0% 97.7%
Marysville, WA 100.0% 100.0% 92.8% 75.8% 100.0% 100.0% 100.0% 72.4% 100.0% 100.0% 100.0% 99.5%
May Creek, WA 100.0% 100.0% 0.0% 0.0% 100.0% 100.0% 94.1% 76.5% 100.0% 100.0% 100.0% 35.3%
Meadowdale, WA 92.6% 92.6% 88.9% 81.5% 96.3% 96.3% 77.8% 63.0% 88.9% 88.9% 81.5% 74.1%
Mill Creek, WA 100.0% 100.0% 98.4% 96.1% 100.0% 100.0% 100.0% 63.8% 100.0% 100.0% 100.0% 100.0%
Mill Creek East, WA 100.0% 100.0% 100.0% 95.9% 100.0% 100.0% 100.0% 73.0% 100.0% 100.0% 100.0% 98.4%
Monroe, WA 100.0% 100.0% 92.0% 82.3% 100.0% 100.0% 100.0% 77.7% 100.0% 100.0% 100.0% 96.0%
Monroe North, WA 100.0% 100.0% 74.1% 60.3% 100.0% 100.0% 100.0% 81.0% 100.0% 100.0% 100.0% 93.1%
Mountlake Terrace, WA 100.0% 100.0% 98.2% 92.0% 100.0% 100.0% 100.0% 77.0% 100.0% 100.0% 100.0% 100.0%
Mukilteo, WA 100.0% 100.0% 94.8% 90.2% 99.4% 99.4% 92.5% 57.8% 99.4% 99.4% 99.4% 97.1%
North Lynnwood, WA 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 81.8% 100.0% 100.0% 100.0% 100.0%
North Sultan, WA 93.8% 93.8% 0.0% 0.0% 100.0% 100.0% 100.0% 93.8% 100.0% 100.0% 100.0% 93.8%
Northwest Stanwood, WA 100.0% 100.0% 35.0% 10.0% 100.0% 100.0% 80.0% 35.0% 100.0% 100.0% 20.0% 5.0%

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 Snohomish 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.