Dimmit County, TX Cell Phone Coverage Map & Network Rankings (2026)

Find the best cell phone network and plan to use in Dimmit County, TX

Coverage rankings for Dimmit County, TX

AT&T currently ranks first for coverage in this area, with a coverage score of 84.6. Compare Wireless Carriers uses FCC broadband map data to estimate and calculate coverage scores. More on that further below.

RankCarrierScoreOverall4G LTE5GFast 5GAverage Signal
1AT&T84.699.2%99.2%91.5%63.1% -114 dBm
2Verizon49.284.8%84.8%0.0%0.0% -98 dBm
3T-Mobile49.150.8%50.8%40.3%22.4% -96 dBm

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

Cell phone coverage map for Dimmit County, TX

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 Dimmit County, TX

#1

AT&T

Coverage Score 84.6
In Dimmit County, TX
Overall
99.2%
4G LTE
99.2%
5G
91.5%
Fast 5G
63.1%
Average Signal -114 dBm
#2

Verizon

Coverage Score 49.2
In Dimmit County, TX
Overall
84.8%
4G LTE
84.8%
5G
0.0%
Fast 5G
0.0%
Average Signal -98 dBm
#3

T-Mobile

Coverage Score 49.1
In Dimmit County, TX
Overall
50.8%
4G LTE
50.8%
5G
40.3%
Fast 5G
22.4%
Average Signal -96 dBm
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Coverage by city in Dimmit County, TX

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

CityVerizonAT&TT-Mobile
Asherton, TX 100.0% 100.0% 0.0% 0.0% -83 dBm 100.0% 100.0% 100.0% 93.3% -107 dBm 33.3% 33.3% 33.3% 0.0% -100 dBm
Big Wells, TX 100.0% 100.0% 0.0% 0.0% -88 dBm 100.0% 100.0% 100.0% 91.7% -100 dBm 100.0% 100.0% 100.0% 100.0% -87 dBm
Brundage, TX 100.0% 100.0% 0.0% 0.0% -88 dBm 100.0% 100.0% 100.0% 100.0% -104 dBm 53.8% 53.8% 30.8% 0.0% -104 dBm
Carrizo Hill, TX 100.0% 100.0% 0.0% 0.0% -87 dBm 100.0% 100.0% 100.0% 88.9% -101 dBm 100.0% 100.0% 100.0% 66.7% -93 dBm
Carrizo Springs, TX 100.0% 100.0% 0.0% 0.0% -70 dBm 100.0% 100.0% 100.0% 83.6% -100 dBm 100.0% 100.0% 100.0% 100.0% -72 dBm
Catarina, TX 100.0% 100.0% 0.0% 0.0% -72 dBm 100.0% 100.0% 100.0% 84.6% -110 dBm 87.2% 87.2% 78.2% 43.6% -96 dBm
Chula Vista, TX 100.0% 100.0% 0.0% 0.0% -77 dBm 100.0% 100.0% 100.0% 100.0% -93 dBm 100.0% 100.0% 100.0% 100.0% -81 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 Dimmit County, TX 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.