Johnson City, TN 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 Johnson City, TN zip codes, this guide compares the top-performing networks and the cheapest plans that use them.

Coverage rankings for Johnson City, TN

T-Mobile currently ranks first for coverage in this area, with a coverage score of 98.7. Compare Wireless Carriers uses FCC broadband map data to estimate and calculate coverage scores. More on that further below.


RankCarrierScoreOverall4G LTE5GFast 5GAverage Signal
1T-Mobile98.7100.0%100.0%99.8%96.4% -82 dBm
2Verizon93.9100.0%100.0%86.4%76.0% -85 dBm
3AT&T83.2100.0%100.0%90.0%47.7% -108 dBm

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


Cell phone coverage map for Johnson City, 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 Johnson City, TN

#1

T-Mobile

Coverage Score 98.7
In Johnson City, TN
Overall
100.0%
4G LTE
100.0%
5G
99.8%
Fast 5G
96.4%
Average Signal -82 dBm
Washington County, TN covered 83.0%
#2

Verizon

Coverage Score 93.9
In Johnson City, TN
Overall
100.0%
4G LTE
100.0%
5G
86.4%
Fast 5G
76.0%
Average Signal -85 dBm
Washington County, TN covered 97.7%
#3

AT&T

Coverage Score 83.2
In Johnson City, TN
Overall
100.0%
4G LTE
100.0%
5G
90.0%
Fast 5G
47.7%
Average Signal -108 dBm
Washington County, TN covered 94.5%

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

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Coverage by ZIP code in Johnson City, TN

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

ZIP CodeAT&TT-MobileVerizon
37601 97.2% 97.2% 68.9% 38.1% -110 dBm 98.1% 98.0% 94.2% 80.3% -85 dBm 99.9% 99.9% 61.4% 41.4% -91 dBm
37604 98.3% 98.3% 73.7% 30.8% -108 dBm 93.6% 93.6% 91.0% 81.0% -85 dBm 99.2% 99.2% 78.9% 64.4% -87 dBm
37614 100.0% 100.0% 92.3% 46.2% -112 dBm 100.0% 100.0% 100.0% 100.0% -78 dBm 100.0% 100.0% 100.0% 100.0% -79 dBm
37615 99.8% 99.8% 83.8% 47.0% -110 dBm 99.0% 99.0% 97.5% 91.4% -83 dBm 100.0% 100.0% 78.5% 62.0% -90 dBm
37659 91.2% 91.2% 12.5% 5.1% -107 dBm 67.5% 67.5% 60.1% 43.4% -91 dBm 96.2% 96.2% 28.7% 18.3% -94 dBm
37686 98.5% 98.5% 31.6% 13.1% -110 dBm 99.1% 99.1% 93.2% 76.2% -88 dBm 99.9% 99.9% 38.3% 13.4% -93 dBm
37694 91.3% 91.3% 35.8% 20.9% -113 dBm 98.3% 98.3% 90.7% 67.2% -90 dBm 98.3% 98.3% 26.2% 10.2% -101 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 Johnson City, 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.