Friday Harbor, WA Cell Phone Coverage Map & Network Rankings (2026)

Don’t overpay for a network that struggles where you actually use your phone.

Using FCC mobile coverage data across Friday Harbor, WA zip codes, this guide compares the top-performing networks and the cheapest plans that use them.



Cell phone coverage map for Friday Harbor, 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, © OpenMapTiles. Basemap by OpenFreeMap. Rendered with MapLibre. FCC BDC mobile coverage processed by CompareWirelessCarriers.

Loading coverage map...


Cell phone coverage rankings by network in Friday Harbor, WA

#1

T-Mobile

Coverage Score 83.7
In Friday Harbor, WA
Overall
83.1%
4G LTE
83.1% avg. -87 dBm 4G LTE signal where 4G LTE coverage exists: avg. -87 dBm
5G
81.5% avg. -84 dBm 5G signal where 5G coverage exists: avg. -84 dBm
Fast 5G
61.5% avg. -79 dBm Fast 5G signal where Fast 5G coverage exists: avg. -79 dBm
San Juan County, WA covered 89.1%
#2

AT&T

Coverage Score 57.8
In Friday Harbor, WA
Overall
66.2%
4G LTE
56.9% avg. -102 dBm 4G LTE signal where 4G LTE coverage exists: avg. -102 dBm
5G
64.6% avg. -109 dBm 5G signal where 5G coverage exists: avg. -109 dBm
Fast 5G
49.2% avg. -106 dBm Fast 5G signal where Fast 5G coverage exists: avg. -106 dBm
San Juan County, WA covered 54.0%
#3

Verizon

Coverage Score 38.6
In Friday Harbor, WA
Overall
75.4%
4G LTE
75.4% avg. -90 dBm 4G LTE signal where 4G LTE coverage exists: avg. -90 dBm
5G
0.0%
Fast 5G
0.0%
San Juan County, WA covered 83.5%

County coverage is shown for surrounding-area context and uses land-area only coverage.

Sponsored US Mobile

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.

Choose your network
Dark Star Light Speed Warp 5G
Unlimited plans from
$22.50/mo
Phone + home internet bundle from
$47/mo
Shop US Mobile

Pricing, network access, switching terms, and home internet availability may vary.


Coverage by ZIP code in Friday Harbor, WA

ZIP code areas can extend beyond city limits, so this table is best used for local comparison around the city.

ZIP CodeAT&TT-MobileVerizon
98250 43.3% 41.4% 29.2% 23.8% 89.0% 89.0% 81.7% 64.7% 76.6% 76.6% 2.4% 1.4%

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 Friday Harbor, 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.