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

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

Coverage rankings for Grundy County, TN

Verizon currently ranks first for coverage in this area, with a coverage score of 47.7. Compare Wireless Carriers uses FCC broadband map data to estimate and calculate coverage scores. More on that further below.

RankCarrierScoreOverall4G LTE5GFast 5GAverage Signal
1Verizon47.777.8%77.8%6.9%3.4% -101 dBm
2AT&T45.783.6%83.6%0.3%0.2% -108 dBm
3T-Mobile33.029.7%29.7%22.7%12.3% -97 dBm

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

Cell phone coverage map for Grundy 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 Grundy County, TN

#1

Verizon

Coverage Score 47.7
In Grundy County, TN
Overall
77.8%
4G LTE
77.8%
5G
6.9%
Fast 5G
3.4%
Average Signal -101 dBm
#2

AT&T

Coverage Score 45.7
In Grundy County, TN
Overall
83.6%
4G LTE
83.6%
5G
0.3%
Fast 5G
0.2%
Average Signal -108 dBm
#3

T-Mobile

Coverage Score 33.0
In Grundy County, TN
Overall
29.7%
4G LTE
29.7%
5G
22.7%
Fast 5G
12.3%
Average Signal -97 dBm
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Coverage by city in Grundy County, TN

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

CityVerizonAT&TT-Mobile
Altamont, TN 98.1% 98.1% 2.3% 0.0% -98 dBm 98.1% 98.1% 0.0% 0.0% -105 dBm 1.8% 1.8% 1.0% 0.0% -102 dBm
Beersheba Springs, TN 100.0% 100.0% 0.0% 0.0% -87 dBm 100.0% 100.0% 0.0% 0.0% -94 dBm N/A N/A N/A N/A N/A
Coalmont, TN 100.0% 100.0% 62.1% 39.2% -94 dBm 100.0% 100.0% 0.0% 0.0% -97 dBm 28.8% 28.8% 11.1% 2.6% -104 dBm
Gruetli Laager, TN 99.7% 99.7% 9.4% 3.3% -94 dBm 99.7% 99.7% 0.0% 0.0% -100 dBm 65.6% 65.6% 48.0% 24.8% -98 dBm
Monteagle, TN 100.0% 100.0% 23.5% 13.2% -93 dBm 100.0% 100.0% 9.4% 6.4% -100 dBm 82.9% 82.9% 68.8% 42.7% -93 dBm
Palmer, TN 15.0% 15.0% 0.0% 0.0% -110 dBm 95.3% 95.3% 0.0% 0.0% -105 dBm 96.1% 96.1% 92.9% 69.3% -90 dBm
Pelham, TN 93.7% 93.7% 0.5% 0.0% -96 dBm 96.5% 96.5% 2.3% 0.2% -110 dBm 57.5% 57.5% 46.7% 29.3% -95 dBm
Tracy City, TN 100.0% 100.0% 54.6% 33.6% -93 dBm 100.0% 100.0% 0.8% 0.0% -101 dBm 100.0% 100.0% 100.0% 83.2% -88 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 Grundy 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.