Washington County, TN Cell Phone Coverage Map & Network Rankings (2026)

Find the best cell phone network and plan to use in Washington County, TN

Coverage rankings for Washington County, TN

T-Mobile currently ranks first for coverage in this area, with a coverage score of 82.3. Compare Wireless Carriers uses FCC broadband map data to estimate and calculate coverage scores. More on that further below.

RankCarrierScoreOverall4G LTE5GFast 5GAverage Signal
1T-Mobile82.383.0%83.0%77.5%63.4% -88 dBm
2Verizon74.697.7%97.7%43.8%32.0% -93 dBm
3AT&T61.894.5%94.5%32.2%15.5% -108 dBm

Scores include coverage area, network type, and average signal strength.

Cell phone coverage map for Washington County, TN

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 Compare Wireless Carriers.

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Cell phone coverage by network in Washington County, TN

#1

T-Mobile

Coverage Score 82.3
In Washington County, TN
Overall
83.0%
4G LTE
83.0%
5G
77.5%
Fast 5G
63.4%
Average Signal -88 dBm
#2

Verizon

Coverage Score 74.6
In Washington County, TN
Overall
97.7%
4G LTE
97.7%
5G
43.8%
Fast 5G
32.0%
Average Signal -93 dBm
#3

AT&T

Coverage Score 61.8
In Washington County, TN
Overall
94.5%
4G LTE
94.5%
5G
32.2%
Fast 5G
15.5%
Average Signal -108 dBm
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Coverage by city in Washington County, TN

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

CityVerizonAT&TT-Mobile
Embreeville, TN 93.9% 93.9% 0.0% 0.0% -107 dBm 39.4% 39.4% 0.0% 0.0% -115 dBm 9.1% 9.1% 6.1% 0.0% -100 dBm
Fall Branch, TN 100.0% 100.0% 61.5% 45.1% -89 dBm 100.0% 100.0% 3.3% 1.6% -101 dBm 100.0% 100.0% 100.0% 97.5% -82 dBm
Gray, TN 100.0% 100.0% 87.8% 61.0% -92 dBm 100.0% 100.0% 90.2% 75.6% -113 dBm 100.0% 100.0% 100.0% 95.1% -88 dBm
Johnson City, TN 100.0% 100.0% 86.4% 76.0% -85 dBm 100.0% 100.0% 90.0% 47.7% -108 dBm 100.0% 100.0% 99.8% 96.4% -82 dBm
Jonesborough, TN 100.0% 100.0% 91.3% 69.3% -86 dBm 100.0% 100.0% 17.3% 10.0% -101 dBm 100.0% 100.0% 100.0% 98.7% -81 dBm
Limestone, TN 97.3% 97.3% 32.5% 20.4% -97 dBm 95.1% 95.1% 25.0% 12.0% -111 dBm 85.7% 85.7% 76.2% 57.2% -91 dBm
Oak Grove, TN 100.0% 100.0% 64.6% 42.5% -93 dBm 100.0% 100.0% 92.1% 37.8% -109 dBm 98.4% 98.4% 92.1% 78.0% -89 dBm
Spurgeon, TN 100.0% 100.0% 80.2% 64.0% -88 dBm 100.0% 100.0% 94.6% 61.3% -110 dBm 100.0% 100.0% 99.1% 94.6% -81 dBm
Telford, TN 100.0% 100.0% 85.5% 73.9% -81 dBm 100.0% 100.0% 5.8% 2.9% -109 dBm 100.0% 100.0% 100.0% 98.6% -76 dBm
Central, TN 100.0% 100.0% 61.1% 25.3% -93 dBm 100.0% 100.0% 89.5% 61.1% -111 dBm 100.0% 100.0% 100.0% 85.3% -85 dBm
Elizabethton, TN 100.0% 100.0% 69.8% 54.9% -88 dBm 100.0% 100.0% 91.8% 63.9% -112 dBm 99.2% 99.2% 97.6% 93.7% -80 dBm
Kingsport, TN 99.4% 99.4% 64.8% 49.5% -89 dBm 95.4% 95.4% 76.6% 37.2% -110 dBm 93.4% 93.4% 88.8% 74.6% -86 dBm
Pine Crest, TN 100.0% 100.0% 88.0% 68.0% -88 dBm 100.0% 100.0% 78.0% 38.0% -109 dBm 100.0% 100.0% 100.0% 94.0% -77 dBm
Unicoi, TN 99.5% 99.5% 29.0% 18.3% -91 dBm 95.0% 95.0% 8.4% 3.0% -107 dBm 77.2% 77.2% 67.4% 50.9% -90 dBm
Watauga, TN 82.6% 82.6% 21.7% 4.3% -102 dBm 95.7% 95.7% 73.9% 52.2% -112 dBm 91.3% 91.3% 82.6% 69.6% -82 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 County, TN 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.