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

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

Coverage rankings for Floyd County, IA

T-Mobile currently ranks first for coverage in this area, with a coverage score of 94.6. Compare Wireless Carriers uses FCC broadband map data to estimate and calculate coverage scores. More on that further below.

RankCarrierScoreOverall4G LTE5GFast 5GAverage Signal
1T-Mobile94.698.4%98.4%94.9%80.6% -88 dBm
2Verizon71.699.4%99.4%37.7%24.7% -95 dBm
3AT&T61.081.5%81.5%43.8%32.6% -117 dBm

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

Cell phone coverage map for Floyd 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 Floyd County, IA

#1

T-Mobile

Coverage Score 94.6
In Floyd County, IA
Overall
98.4%
4G LTE
98.4%
5G
94.9%
Fast 5G
80.6%
Average Signal -88 dBm
#2

Verizon

Coverage Score 71.6
In Floyd County, IA
Overall
99.4%
4G LTE
99.4%
5G
37.7%
Fast 5G
24.7%
Average Signal -95 dBm
#3

AT&T

Coverage Score 61.0
In Floyd County, IA
Overall
81.5%
4G LTE
81.5%
5G
43.8%
Fast 5G
32.6%
Average Signal -117 dBm
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Coverage by city in Floyd County, IA

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

CityVerizonAT&TT-Mobile
Charles City, IA 100.0% 100.0% 89.9% 78.4% -85 dBm 100.0% 100.0% 95.9% 95.9% -109 dBm 100.0% 100.0% 100.0% 100.0% -72 dBm
Colwell, IA 100.0% 100.0% 0.0% 0.0% -103 dBm 100.0% 100.0% 33.3% 0.0% -117 dBm 100.0% 100.0% 100.0% 100.0% -90 dBm
Floyd, IA 100.0% 100.0% 0.0% 0.0% -68 dBm 100.0% 100.0% 69.2% 69.2% -119 dBm 100.0% 100.0% 100.0% 100.0% -72 dBm
Marble Rock, IA 100.0% 100.0% 0.0% 0.0% -101 dBm 42.1% 42.1% 10.5% 0.0% -120 dBm 100.0% 100.0% 68.4% 26.3% -91 dBm
Nora Springs, IA 100.0% 100.0% 96.3% 87.0% -81 dBm 85.2% 85.2% 0.0% 0.0% -118 dBm 100.0% 100.0% 100.0% 100.0% -72 dBm
Rockford, IA 100.0% 100.0% 31.3% 12.5% -102 dBm 37.5% 37.5% 0.0% 0.0% -120 dBm 100.0% 100.0% 100.0% 100.0% -66 dBm
Roseville, IA 100.0% 100.0% 46.2% 7.7% -98 dBm 95.6% 95.6% 56.0% 14.3% -119 dBm 95.6% 95.6% 91.2% 69.2% -94 dBm
Rudd, IA 100.0% 100.0% 100.0% 80.8% -87 dBm 96.2% 96.2% 38.5% 3.8% -120 dBm 100.0% 100.0% 100.0% 100.0% -78 dBm
Dougherty, IA 100.0% 100.0% 23.1% 0.0% -100 dBm 69.2% 69.2% 0.0% 0.0% -120 dBm 100.0% 100.0% 84.6% 38.5% -91 dBm
Greene, IA 100.0% 100.0% 0.0% 0.0% -71 dBm 34.6% 34.6% 0.0% 0.0% -120 dBm 100.0% 100.0% 100.0% 100.0% -71 dBm
Nashua, IA 100.0% 100.0% 0.0% 0.0% -86 dBm 51.4% 51.4% 17.1% 4.3% -119 dBm 100.0% 100.0% 100.0% 100.0% -79 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 Floyd 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.