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

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

Coverage rankings for Ozaukee County, WI

T-Mobile currently ranks first for coverage in this area, with a coverage score of 93.9. Compare Wireless Carriers uses FCC broadband map data to estimate and calculate coverage scores. More on that further below.

RankCarrierScoreOverall4G LTE5GFast 5GAverage Signal
1T-Mobile93.998.1%97.8%93.9%77.5% -87 dBm
2Verizon87.399.9%99.9%79.5%56.2% -95 dBm
3AT&T85.399.2%99.2%89.9%60.9% -109 dBm

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

Cell phone coverage map for Ozaukee 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 Ozaukee County, WI

#1

T-Mobile

Coverage Score 93.9
In Ozaukee County, WI
Overall
98.1%
4G LTE
97.8%
5G
93.9%
Fast 5G
77.5%
Average Signal -87 dBm
#2

Verizon

Coverage Score 87.3
In Ozaukee County, WI
Overall
99.9%
4G LTE
99.9%
5G
79.5%
Fast 5G
56.2%
Average Signal -95 dBm
#3

AT&T

Coverage Score 85.3
In Ozaukee County, WI
Overall
99.2%
4G LTE
99.2%
5G
89.9%
Fast 5G
60.9%
Average Signal -109 dBm
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Coverage by city in Ozaukee County, WI

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

CityVerizonAT&TT-Mobile
Belgium, WI 100.0% 100.0% 68.0% 38.0% -97 dBm 100.0% 100.0% 86.0% 72.0% -115 dBm 100.0% 100.0% 100.0% 96.0% -73 dBm
Cedarburg, WI 100.0% 100.0% 89.2% 58.6% -92 dBm 100.0% 100.0% 100.0% 70.3% -101 dBm 100.0% 100.0% 100.0% 97.3% -81 dBm
Fredonia, WI 100.0% 100.0% 94.2% 88.5% -82 dBm 100.0% 100.0% 100.0% 94.2% -97 dBm 100.0% 100.0% 100.0% 96.2% -77 dBm
Grafton, WI 100.0% 100.0% 96.2% 77.9% -89 dBm 100.0% 100.0% 99.2% 79.4% -101 dBm 100.0% 100.0% 100.0% 99.2% -78 dBm
Mequon, WI 100.0% 100.0% 93.3% 72.0% -93 dBm 99.5% 99.4% 90.0% 54.5% -110 dBm 99.6% 99.6% 97.2% 82.0% -87 dBm
Port Washington, WI 100.0% 100.0% 85.8% 55.2% -97 dBm 98.5% 98.5% 97.8% 80.6% -102 dBm 100.0% 100.0% 100.0% 97.8% -82 dBm
Saukville, WI 100.0% 100.0% 100.0% 87.2% -87 dBm 100.0% 100.0% 100.0% 91.9% -101 dBm 100.0% 100.0% 100.0% 89.5% -91 dBm
Thiensville, WI 100.0% 100.0% 91.7% 66.7% -86 dBm 100.0% 100.0% 50.0% 33.3% -108 dBm 100.0% 100.0% 100.0% 100.0% -87 dBm
Waubeka, WI 100.0% 100.0% 51.7% 31.7% -96 dBm 100.0% 100.0% 96.7% 68.3% -116 dBm 95.0% 95.0% 76.7% 33.3% -99 dBm
Bayside, WI 100.0% 100.0% 83.9% 62.5% -86 dBm 100.0% 100.0% 96.4% 83.9% -102 dBm 98.2% 98.2% 91.1% 64.3% -91 dBm
Brown Deer, WI 100.0% 100.0% 99.0% 82.7% -91 dBm 100.0% 100.0% 100.0% 93.3% -98 dBm 100.0% 100.0% 100.0% 98.1% -79 dBm
Germantown, WI 100.0% 100.0% 89.8% 73.0% -90 dBm 98.5% 98.3% 93.7% 64.9% -108 dBm 99.1% 99.1% 96.3% 84.4% -86 dBm
Menomonee Falls, WI 100.0% 100.0% 96.4% 79.9% -89 dBm 100.0% 100.0% 98.0% 72.3% -106 dBm 100.0% 100.0% 100.0% 98.3% -82 dBm
Milwaukee, WI 100.0% 100.0% 98.7% 92.3% -87 dBm 100.0% 100.0% 99.4% 70.2% -98 dBm 99.9% 99.9% 99.9% 99.8% -76 dBm
Newburg, WI 100.0% 100.0% 100.0% 100.0% -75 dBm 100.0% 100.0% 54.2% 45.8% -111 dBm 100.0% 100.0% 100.0% 100.0% -74 dBm
Random Lake, WI 100.0% 100.0% 0.0% 0.0% -72 dBm 100.0% 100.0% 5.6% 5.6% -86 dBm 100.0% 100.0% 100.0% 97.2% -82 dBm
River Hills, WI 100.0% 100.0% 96.7% 35.0% -102 dBm 100.0% 100.0% 100.0% 52.8% -110 dBm 100.0% 100.0% 100.0% 83.7% -88 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 Ozaukee 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.