Carrierlytics County Coverage Guide

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

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

Using FCC mobile coverage data across cities and ZIP codes in Grimes County, TX, Carrierlytics compares the top-performing networks and the cheapest plans that use them.

Grimes County, TX

Cell phone coverage map for Grimes 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 Carrierlytics.

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Cell phone coverage rankings by network in Grimes County, TX

#1

T-Mobile

Coverage Score 76.5
In Grimes County, TX
Overall
83.2%
4G LTE
83.2% avg. -95 dBm 4G LTE signal where 4G LTE coverage exists: avg. -95 dBm
5G
70.6% avg. -90 dBm 5G signal where 5G coverage exists: avg. -90 dBm
Fast 5G
49.0% avg. -86 dBm Fast 5G signal where Fast 5G coverage exists: avg. -86 dBm
#2

AT&T

Coverage Score 73.9
In Grimes County, TX
Overall
99.1%
4G LTE
99.1% avg. -108 dBm 4G LTE signal where 4G LTE coverage exists: avg. -108 dBm
5G
86.2% avg. -113 dBm 5G signal where 5G coverage exists: avg. -113 dBm
Fast 5G
63.5% avg. -111 dBm Fast 5G signal where Fast 5G coverage exists: avg. -111 dBm
#3

Verizon

Coverage Score 69.7
In Grimes County, TX
Overall
100.0%
4G LTE
100.0% avg. -88 dBm 4G LTE signal where 4G LTE coverage exists: avg. -88 dBm
5G
40.8% avg. -102 dBm 5G signal where 5G coverage exists: avg. -102 dBm
Fast 5G
28.0% avg. -100 dBm Fast 5G signal where Fast 5G coverage exists: avg. -100 dBm
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Coverage by city in Grimes County, TX

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

City Verizon AT&T T-Mobile
Anderson, TX 100.0% 100.0% 0.0% 0.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0%
Bedias, TX 100.0% 100.0% 0.0% 0.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0%
Iola, TX 100.0% 100.0% 54.5% 0.0% 100.0% 100.0% 100.0% 95.5% 90.9% 90.9% 54.5% 0.0%
Navasota, TX 100.0% 100.0% 95.7% 95.7% 100.0% 100.0% 99.5% 83.0% 100.0% 100.0% 100.0% 98.9%
Pinebrook, TX 100.0% 100.0% 42.9% 28.6% 100.0% 100.0% 100.0% 76.2% 100.0% 100.0% 100.0% 76.2%
Plantersville, TX 100.0% 100.0% 87.0% 69.6% 100.0% 100.0% 100.0% 97.8% 100.0% 100.0% 100.0% 93.5%
Richards, TX 100.0% 100.0% 55.3% 26.3% 100.0% 100.0% 100.0% 100.0% 63.2% 63.2% 44.7% 2.6%
Shiro, TX 100.0% 100.0% 0.0% 0.0% 100.0% 100.0% 100.0% 98.2% 100.0% 100.0% 100.0% 100.0%
Todd Mission, TX 100.0% 100.0% 100.0% 86.0% 100.0% 100.0% 100.0% 88.4% 100.0% 100.0% 100.0% 100.0%

About The Coverage Data

Coverage and signal estimates are derived by Carrierlytics 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 Grimes 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.