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

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

Coverage rankings for Winnebago County, IA

T-Mobile currently ranks first for coverage in this area, with a coverage score of 98.1. Compare Wireless Carriers uses FCC broadband map data to estimate and calculate coverage scores. More on that further below.

RankCarrierScoreOverall4G LTE5GFast 5GAverage Signal
1T-Mobile98.1100.0%100.0%99.7%95.5% -85 dBm
2Verizon71.8100.0%100.0%39.9%22.8% -94 dBm
3AT&T28.549.4%48.9%4.7%1.1% -119 dBm

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

Cell phone coverage map for Winnebago 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 Winnebago County, IA

#1

T-Mobile

Coverage Score 98.1
In Winnebago County, IA
Overall
100.0%
4G LTE
100.0%
5G
99.7%
Fast 5G
95.5%
Average Signal -85 dBm
#2

Verizon

Coverage Score 71.8
In Winnebago County, IA
Overall
100.0%
4G LTE
100.0%
5G
39.9%
Fast 5G
22.8%
Average Signal -94 dBm
#3

AT&T

Coverage Score 28.5
In Winnebago County, IA
Overall
49.4%
4G LTE
48.9%
5G
4.7%
Fast 5G
1.1%
Average Signal -119 dBm
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Coverage by city in Winnebago County, IA

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

CityVerizonAT&TT-Mobile
Buffalo Center, IA 100.0% 100.0% 0.0% 0.0% -69 dBm 100.0% 100.0% 3.7% 0.0% -120 dBm 100.0% 100.0% 100.0% 100.0% -67 dBm
Forest City, IA 100.0% 100.0% 32.7% 27.4% -79 dBm 37.2% 37.2% 0.0% 0.0% -120 dBm 100.0% 100.0% 100.0% 100.0% -69 dBm
Lake Mills, IA 100.0% 100.0% 43.8% 29.7% -95 dBm 65.6% 65.6% 4.7% 4.7% -120 dBm 100.0% 100.0% 100.0% 100.0% -73 dBm
Leland, IA 100.0% 100.0% 85.3% 64.7% -96 dBm 11.8% 11.8% 0.0% 0.0% -120 dBm 100.0% 100.0% 100.0% 100.0% -77 dBm
Rake, IA 100.0% 100.0% 0.0% 0.0% -92 dBm 61.1% 61.1% 55.6% 0.0% -120 dBm 100.0% 100.0% 100.0% 100.0% -66 dBm
Scarville, IA 100.0% 100.0% 80.0% 80.0% -94 dBm 60.0% 60.0% 0.0% 0.0% -120 dBm 100.0% 100.0% 100.0% 100.0% -62 dBm
Thompson, IA 100.0% 100.0% 10.0% 0.0% -100 dBm 5.0% 5.0% 0.0% 0.0% -120 dBm 100.0% 100.0% 100.0% 100.0% -77 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 Winnebago 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.