Martin County, FL Cell Phone Coverage Map & Network Rankings (2026)

Find the best cell phone network and plan to use in Martin County, FL

Coverage rankings for Martin County, FL

Verizon currently ranks first for coverage in this area, with a coverage score of 83.8. Compare Wireless Carriers uses FCC broadband map data to estimate and calculate coverage scores. More on that further below.

RankCarrierScoreOverall4G LTE5GFast 5GAverage Signal
1Verizon83.899.8%99.8%74.4%43.5% -93 dBm
2T-Mobile78.979.1%77.9%76.3%58.1% -90 dBm
3AT&T75.997.5%97.0%88.2%28.8% -108 dBm

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

Cell phone coverage map for Martin County, FL

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 Martin County, FL

#1

Verizon

Coverage Score 83.8
In Martin County, FL
Overall
99.8%
4G LTE
99.8%
5G
74.4%
Fast 5G
43.5%
Average Signal -93 dBm
#2

T-Mobile

Coverage Score 78.9
In Martin County, FL
Overall
79.1%
4G LTE
77.9%
5G
76.3%
Fast 5G
58.1%
Average Signal -90 dBm
#3

AT&T

Coverage Score 75.9
In Martin County, FL
Overall
97.5%
4G LTE
97.0%
5G
88.2%
Fast 5G
28.8%
Average Signal -108 dBm
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Coverage by city in Martin County, FL

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

CityVerizonAT&TT-Mobile
Hobe Sound, FL 100.0% 100.0% 91.7% 75.6% -86 dBm 100.0% 100.0% 97.9% 48.2% -94 dBm 100.0% 100.0% 100.0% 100.0% -77 dBm
Indiantown, FL 100.0% 100.0% 81.3% 58.8% -92 dBm 99.5% 99.5% 82.8% 50.0% -113 dBm 90.7% 88.6% 90.2% 76.3% -86 dBm
Jensen Beach, FL 100.0% 100.0% 91.2% 67.4% -88 dBm 100.0% 100.0% 100.0% 44.6% -97 dBm 99.5% 99.5% 99.5% 96.9% -83 dBm
Jupiter Island, FL 100.0% 100.0% 54.7% 37.3% -93 dBm 100.0% 100.0% 98.7% 48.0% -104 dBm 97.3% 97.3% 92.0% 82.7% -89 dBm
North River Shores, FL 100.0% 100.0% 100.0% 77.8% -90 dBm 94.4% 94.4% 94.4% 33.3% -96 dBm 100.0% 100.0% 100.0% 100.0% -78 dBm
Ocean Breeze, FL 100.0% 100.0% 100.0% 100.0% -63 dBm 100.0% 100.0% 100.0% 50.0% -100 dBm 100.0% 100.0% 100.0% 100.0% -60 dBm
Palm City, FL 100.0% 100.0% 68.8% 40.5% -91 dBm 98.9% 98.9% 95.4% 31.8% -101 dBm 98.1% 95.7% 97.8% 77.7% -89 dBm
Port Salerno, FL 100.0% 100.0% 76.0% 49.0% -93 dBm 100.0% 100.0% 99.0% 46.9% -92 dBm 97.9% 97.9% 97.9% 88.5% -82 dBm
Rio, FL 100.0% 100.0% 100.0% 90.0% -83 dBm 100.0% 100.0% 100.0% 60.0% -99 dBm 100.0% 100.0% 100.0% 100.0% -81 dBm
Sewall’s Point, FL 100.0% 100.0% 56.7% 40.0% -93 dBm 96.7% 93.3% 83.3% 30.0% -101 dBm 93.3% 93.3% 90.0% 30.0% -98 dBm
Stuart, FL 100.0% 100.0% 99.0% 83.9% -83 dBm 98.4% 98.4% 96.4% 53.1% -91 dBm 99.5% 99.5% 99.5% 99.5% -77 dBm
Hutchinson Island South, FL 100.0% 100.0% 75.6% 48.7% -88 dBm 100.0% 100.0% 84.0% 47.9% -110 dBm 63.0% 63.0% 57.1% 43.7% -86 dBm
Jupiter, FL 100.0% 100.0% 92.7% 75.0% -87 dBm 100.0% 100.0% 99.5% 66.2% -98 dBm 100.0% 100.0% 100.0% 94.2% -83 dBm
Jupiter Farms, FL 100.0% 100.0% 22.1% 12.9% -91 dBm 100.0% 100.0% 100.0% 49.6% -103 dBm 98.6% 98.3% 97.1% 82.0% -87 dBm
Port St. Lucie, FL 100.0% 100.0% 93.4% 73.7% -89 dBm 99.5% 98.9% 96.4% 31.8% -102 dBm 96.2% 96.1% 96.0% 92.2% -84 dBm
Tequesta, FL 100.0% 100.0% 66.0% 40.0% -93 dBm 100.0% 100.0% 98.0% 46.0% -100 dBm 100.0% 100.0% 100.0% 74.0% -92 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 Martin County, FL 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.