Carroll County, IA Cell Phone Coverage Map & Network Rankings (2026)

Find the best cell phone network and plan to use in Carroll County, IA

Coverage rankings for Carroll County, IA

T-Mobile currently ranks first for coverage in this area, with a coverage score of 80.1. Compare Wireless Carriers uses FCC broadband map data to estimate and calculate coverage scores. More on that further below.

RankCarrierScoreOverall4G LTE5GFast 5GAverage Signal
1T-Mobile80.187.7%87.7%74.4%50.3% -94 dBm
2Verizon75.3100.0%100.0%50.6%27.5% -93 dBm
3AT&T54.286.2%86.1%19.4%15.6% -114 dBm

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

Cell phone coverage map for Carroll County, IA

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 Carroll County, IA

#1

T-Mobile

Coverage Score 80.1
In Carroll County, IA
Overall
87.7%
4G LTE
87.7%
5G
74.4%
Fast 5G
50.3%
Average Signal -94 dBm
#2

Verizon

Coverage Score 75.3
In Carroll County, IA
Overall
100.0%
4G LTE
100.0%
5G
50.6%
Fast 5G
27.5%
Average Signal -93 dBm
#3

AT&T

Coverage Score 54.2
In Carroll County, IA
Overall
86.2%
4G LTE
86.1%
5G
19.4%
Fast 5G
15.6%
Average Signal -114 dBm
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Coverage by city in Carroll County, IA

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

CityVerizonAT&TT-Mobile
Arcadia, IA 100.0% 100.0% 20.8% 0.0% -98 dBm 70.8% 70.8% 0.0% 0.0% -119 dBm 41.7% 41.7% 8.3% 0.0% -107 dBm
Breda, IA 100.0% 100.0% 47.4% 0.0% -100 dBm 100.0% 100.0% 5.3% 0.0% -113 dBm 100.0% 100.0% 68.4% 36.8% -99 dBm
Carroll, IA 100.0% 100.0% 98.0% 91.8% -81 dBm 100.0% 100.0% 89.8% 89.8% -103 dBm 100.0% 100.0% 100.0% 100.0% -75 dBm
Coon Rapids, IA 100.0% 100.0% 80.4% 65.2% -91 dBm 21.7% 21.7% 0.0% 0.0% -115 dBm 100.0% 100.0% 100.0% 100.0% -72 dBm
Dedham, IA 100.0% 100.0% 100.0% 100.0% -80 dBm 93.3% 93.3% 0.0% 0.0% -113 dBm 86.7% 86.7% 60.0% 20.0% -101 dBm
Glidden, IA 100.0% 100.0% 44.8% 0.0% -83 dBm 96.6% 96.6% 41.4% 10.3% -118 dBm 100.0% 100.0% 86.2% 44.8% -98 dBm
Halbur, IA 100.0% 100.0% 14.3% 0.0% -96 dBm 100.0% 100.0% 14.3% 0.0% -110 dBm 100.0% 100.0% 71.4% 42.9% -99 dBm
Lanesboro, IA 100.0% 100.0% 78.9% 36.8% -96 dBm 94.7% 94.7% 0.0% 0.0% -116 dBm 84.2% 84.2% 52.6% 10.5% -103 dBm
Lidderdale, IA 100.0% 100.0% 91.7% 26.7% -97 dBm 100.0% 100.0% 36.7% 36.7% -112 dBm 100.0% 100.0% 96.7% 56.7% -95 dBm
Manning, IA 100.0% 100.0% 0.0% 0.0% -70 dBm 25.4% 25.4% 0.0% 0.0% -120 dBm 17.5% 17.5% 0.0% 0.0% -108 dBm
Ralston, IA 100.0% 100.0% 0.0% 0.0% -66 dBm 75.5% 75.5% 0.0% 0.0% -120 dBm 100.0% 100.0% 98.0% 77.6% -91 dBm
Templeton, IA 100.0% 100.0% 50.0% 10.0% -93 dBm 100.0% 100.0% 0.0% 0.0% -108 dBm 100.0% 100.0% 80.0% 30.0% -99 dBm
Willey, IA 100.0% 100.0% 50.0% 0.0% -100 dBm 100.0% 100.0% 12.5% 12.5% -103 dBm 100.0% 100.0% 100.0% 100.0% -88 dBm
Westside, IA 100.0% 100.0% 0.0% 0.0% -82 dBm 24.3% 24.3% 2.7% 2.7% -118 dBm 13.5% 13.5% 0.0% 0.0% -102 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 Carroll County, IA 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.