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

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

Coverage rankings for Fremont County, IA

T-Mobile currently ranks first for coverage in this area, with a coverage score of 63.9. Compare Wireless Carriers uses FCC broadband map data to estimate and calculate coverage scores. More on that further below.

RankCarrierScoreOverall4G LTE5GFast 5GAverage Signal
1T-Mobile63.970.5%70.5%48.1%36.1% -94 dBm
2AT&T55.587.7%87.7%19.3%16.6% -113 dBm
3Verizon13.60.7%0.0%0.7%0.6% -88 dBm

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

Cell phone coverage map for Fremont 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 Fremont County, IA

#1

T-Mobile

Coverage Score 63.9
In Fremont County, IA
Overall
70.5%
4G LTE
70.5%
5G
48.1%
Fast 5G
36.1%
Average Signal -94 dBm
#2

AT&T

Coverage Score 55.5
In Fremont County, IA
Overall
87.7%
4G LTE
87.7%
5G
19.3%
Fast 5G
16.6%
Average Signal -113 dBm
#3

Verizon

Coverage Score 13.6
In Fremont County, IA
Overall
0.7%
4G LTE
0.0%
5G
0.7%
Fast 5G
0.6%
Average Signal -88 dBm
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Coverage by city in Fremont County, IA

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

CityVerizonAT&TT-Mobile
Anderson, IA N/A N/A N/A N/A N/A 100.0% 100.0% 0.0% 0.0% -114 dBm 100.0% 100.0% 37.5% 0.0% -103 dBm
Bartlett, IA 11.1% 0.0% 11.1% 11.1% -90 dBm 100.0% 100.0% 100.0% 11.1% -110 dBm 100.0% 100.0% 100.0% 100.0% -80 dBm
Farragut, IA N/A N/A N/A N/A N/A 100.0% 100.0% 0.0% 0.0% -114 dBm 100.0% 100.0% 44.4% 22.2% -98 dBm
Hamburg, IA N/A N/A N/A N/A N/A 100.0% 100.0% 20.6% 20.6% -105 dBm 52.9% 52.9% 47.1% 38.2% -93 dBm
Imogene, IA N/A N/A N/A N/A N/A 91.7% 91.7% 0.0% 0.0% -105 dBm 58.3% 58.3% 33.3% 0.0% -103 dBm
Percival, IA N/A N/A N/A N/A N/A 100.0% 100.0% 90.9% 63.6% -118 dBm 100.0% 100.0% 100.0% 100.0% -62 dBm
Randolph, IA N/A N/A N/A N/A N/A 87.5% 87.5% 0.0% 0.0% -106 dBm N/A N/A N/A N/A N/A
Riverton, IA N/A N/A N/A N/A N/A 93.3% 93.3% 0.0% 0.0% -116 dBm 26.7% 26.7% 6.7% 6.7% -105 dBm
Sidney, IA N/A N/A N/A N/A N/A 100.0% 100.0% 2.9% 2.9% -94 dBm 68.6% 68.6% 22.9% 0.0% -103 dBm
Tabor, IA N/A N/A N/A N/A N/A 100.0% 100.0% 12.1% 12.1% -101 dBm 66.7% 66.7% 30.3% 9.1% -103 dBm
Thurman, IA N/A N/A N/A N/A N/A 93.3% 93.3% 20.0% 20.0% -106 dBm 86.7% 86.7% 73.3% 53.3% -95 dBm
Shenandoah, IA N/A N/A N/A N/A N/A 100.0% 100.0% 0.0% 0.0% -107 dBm 100.0% 100.0% 100.0% 100.0% -82 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 Fremont 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.