Rock County, WI Cell Phone Coverage Map & Network Rankings (2026)

Find the best cell phone network and plan to use in Rock County, WI

Coverage rankings for Rock County, WI

T-Mobile currently ranks first for coverage in this area, with a coverage score of 85.2. Compare Wireless Carriers uses FCC broadband map data to estimate and calculate coverage scores. More on that further below.

RankCarrierScoreOverall4G LTE5GFast 5GAverage Signal
1T-Mobile85.289.2%89.2%82.2%63.0% -90 dBm
2AT&T78.396.6%96.5%79.0%45.1% -112 dBm
3Verizon73.899.5%99.4%45.7%26.9% -94 dBm

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

Cell phone coverage map for Rock County, WI

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 Rock County, WI

#1

T-Mobile

Coverage Score 85.2
In Rock County, WI
Overall
89.2%
4G LTE
89.2%
5G
82.2%
Fast 5G
63.0%
Average Signal -90 dBm
#2

AT&T

Coverage Score 78.3
In Rock County, WI
Overall
96.6%
4G LTE
96.5%
5G
79.0%
Fast 5G
45.1%
Average Signal -112 dBm
#3

Verizon

Coverage Score 73.8
In Rock County, WI
Overall
99.5%
4G LTE
99.4%
5G
45.7%
Fast 5G
26.9%
Average Signal -94 dBm
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Coverage by city in Rock County, WI

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

CityVerizonAT&TT-Mobile
Afton, WI 100.0% 100.0% 0.0% 0.0% -96 dBm 100.0% 100.0% 20.0% 0.0% -114 dBm 40.0% 40.0% 0.0% 0.0% -108 dBm
Avalon, WI 100.0% 100.0% 33.2% 24.6% -87 dBm 94.4% 93.7% 81.3% 6.5% -116 dBm 97.8% 97.8% 90.7% 70.0% -92 dBm
Beloit, WI 99.8% 99.8% 65.8% 44.6% -89 dBm 100.0% 100.0% 99.5% 73.8% -104 dBm 100.0% 100.0% 99.3% 94.6% -84 dBm
Clinton, WI 100.0% 100.0% 79.4% 52.9% -92 dBm 100.0% 100.0% 58.8% 5.9% -115 dBm 100.0% 100.0% 100.0% 100.0% -76 dBm
Edgerton, WI 100.0% 100.0% 82.2% 57.4% -99 dBm 100.0% 100.0% 82.2% 73.3% -110 dBm 100.0% 100.0% 99.0% 73.3% -90 dBm
Evansville, WI 100.0% 100.0% 97.8% 91.2% -82 dBm 100.0% 100.0% 100.0% 96.7% -107 dBm 100.0% 100.0% 100.0% 96.7% -81 dBm
Footville, WI 100.0% 100.0% 33.3% 0.0% -102 dBm 100.0% 100.0% 96.3% 55.6% -115 dBm 100.0% 100.0% 100.0% 55.6% -94 dBm
Fulton, WI 100.0% 100.0% 0.0% 0.0% -107 dBm 100.0% 100.0% 0.0% 0.0% -120 dBm N/A N/A N/A N/A N/A
Hanover, WI 100.0% 100.0% 21.4% 0.0% -101 dBm 100.0% 100.0% 100.0% 100.0% -109 dBm 78.6% 78.6% 71.4% 57.1% -94 dBm
Janesville, WI 100.0% 100.0% 76.6% 58.1% -89 dBm 100.0% 99.8% 98.9% 63.8% -101 dBm 100.0% 100.0% 99.5% 94.4% -83 dBm
Milton, WI 100.0% 100.0% 59.1% 42.6% -90 dBm 100.0% 100.0% 99.1% 73.0% -103 dBm 100.0% 100.0% 100.0% 91.3% -87 dBm
Orfordville, WI 100.0% 100.0% 100.0% 100.0% -76 dBm 100.0% 100.0% 96.6% 51.7% -117 dBm 72.4% 72.4% 55.2% 6.9% -101 dBm
Shopiere, WI 100.0% 100.0% 16.7% 16.7% -102 dBm 100.0% 100.0% 66.7% 0.0% -113 dBm 83.3% 83.3% 50.0% 0.0% -104 dBm
Allens Grove, WI 100.0% 100.0% 66.7% 40.0% -94 dBm 100.0% 100.0% 100.0% 93.3% -113 dBm 100.0% 100.0% 86.7% 40.0% -98 dBm
Brodhead, WI 100.0% 100.0% 0.0% 0.0% -72 dBm 91.1% 88.9% 64.4% 35.6% -120 dBm 100.0% 100.0% 100.0% 100.0% -77 dBm
Brooklyn, WI 100.0% 100.0% 3.7% 0.0% -101 dBm 100.0% 100.0% 88.9% 33.3% -118 dBm 100.0% 100.0% 100.0% 100.0% -69 dBm
Lake Koshkonong, WI 100.0% 100.0% 74.8% 45.7% -93 dBm 100.0% 100.0% 93.5% 80.7% -113 dBm 99.7% 99.7% 94.7% 80.1% -89 dBm
Whitewater, WI 100.0% 100.0% 46.9% 25.8% -87 dBm 100.0% 100.0% 100.0% 100.0% -107 dBm 100.0% 100.0% 100.0% 91.5% -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 Rock County, WI 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.