St. Johns County, FL Cell Phone Coverage Map & Network Rankings (2026)

Find the best cell phone network and plan to use in St. Johns County, FL

Cell phone coverage map for St. Johns 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, © OpenMapTiles. Basemap by OpenFreeMap. Rendered with MapLibre. FCC BDC mobile coverage processed by CompareWirelessCarriers.

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Cell phone coverage rankings by network in St. Johns County, FL

#1

T-Mobile

Coverage Score 89.4
In St. Johns County, FL
Overall
94.2%
4G LTE
94.1% avg. -92 dBm 4G LTE signal where 4G LTE coverage exists: avg. -92 dBm
5G
90.0% avg. -87 dBm 5G signal where 5G coverage exists: avg. -87 dBm
Fast 5G
73.1% avg. -84 dBm Fast 5G signal where Fast 5G coverage exists: avg. -84 dBm
#2

Verizon

Coverage Score 86.7
In St. Johns County, FL
Overall
100.0%
4G LTE
100.0% avg. -87 dBm 4G LTE signal where 4G LTE coverage exists: avg. -87 dBm
5G
94.6% avg. -96 dBm 5G signal where 5G coverage exists: avg. -96 dBm
Fast 5G
67.5% avg. -92 dBm Fast 5G signal where Fast 5G coverage exists: avg. -92 dBm
#3

AT&T

Coverage Score 73.4
In St. Johns County, FL
Overall
99.5%
4G LTE
99.4% avg. -104 dBm 4G LTE signal where 4G LTE coverage exists: avg. -104 dBm
5G
93.6% avg. -107 dBm 5G signal where 5G coverage exists: avg. -107 dBm
Fast 5G
41.5% avg. -100 dBm Fast 5G signal where Fast 5G coverage exists: avg. -100 dBm
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Coverage by city in St. Johns County, FL

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

CityVerizonAT&TT-Mobile
Butler Beach, FL 100.0% 100.0% 79.4% 61.8% 100.0% 100.0% 97.1% 64.7% 100.0% 100.0% 100.0% 100.0%
Crescent Beach, FL 100.0% 100.0% 88.9% 44.4% 100.0% 100.0% 100.0% 8.3% 80.6% 80.6% 77.8% 52.8%
Elkton, FL 100.0% 100.0% 88.1% 47.5% 99.1% 99.1% 90.8% 31.4% 94.9% 94.9% 91.5% 62.0%
Flagler Estates, FL 100.0% 100.0% 80.4% 41.5% 100.0% 100.0% 96.2% 45.3% 100.0% 100.0% 98.4% 75.6%
Fruit Cove, FL 100.0% 100.0% 100.0% 87.8% 100.0% 100.0% 97.9% 56.1% 100.0% 100.0% 99.8% 94.0%
Hastings, FL 100.0% 100.0% 100.0% 82.0% 100.0% 100.0% 100.0% 46.1% 100.0% 100.0% 100.0% 100.0%
Nocatee, FL 100.0% 100.0% 96.4% 76.1% 100.0% 100.0% 100.0% 56.2% 100.0% 100.0% 100.0% 97.2%
Palm Valley, FL 100.0% 100.0% 99.4% 88.6% 100.0% 99.7% 99.1% 53.5% 100.0% 100.0% 100.0% 99.4%
Ponte Vedra, FL 100.0% 100.0% 87.9% 57.3% 99.8% 99.8% 99.2% 49.2% 93.6% 93.6% 87.5% 73.1%
Ponte Vedra Beach, FL 100.0% 100.0% 98.8% 86.0% 98.7% 98.6% 93.8% 41.8% 96.4% 96.4% 92.7% 78.7%
Saint Augustine, FL 100.0% 100.0% 97.7% 73.6% 99.4% 99.3% 94.7% 43.4% 96.4% 96.4% 93.1% 79.2%
Saint Johns, FL 100.0% 100.0% 99.1% 80.6% 100.0% 99.9% 98.7% 51.7% 99.9% 99.9% 99.1% 87.4%
Sawgrass, FL 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 50.7% 100.0% 100.0% 100.0% 100.0%
St. Augustine, FL 100.0% 100.0% 100.0% 99.6% 100.0% 100.0% 98.4% 47.5% 100.0% 100.0% 100.0% 100.0%
St. Augustine Beach, FL 100.0% 100.0% 100.0% 98.3% 100.0% 100.0% 100.0% 48.3% 100.0% 100.0% 100.0% 100.0%
St. Augustine Shores, FL 100.0% 100.0% 100.0% 86.1% 100.0% 100.0% 99.1% 36.5% 100.0% 100.0% 100.0% 86.1%
St. Augustine South, FL 100.0% 100.0% 100.0% 100.0% 97.6% 97.6% 88.1% 11.9% 100.0% 100.0% 100.0% 100.0%
Vilano Beach, FL 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 70.2% 100.0% 100.0% 100.0% 87.2%
World Golf Village, FL 100.0% 100.0% 100.0% 89.0% 100.0% 99.9% 99.7% 57.3% 100.0% 100.0% 100.0% 97.5%
Jacksonville, FL 99.9% 99.9% 86.2% 69.1% 98.4% 98.2% 94.4% 43.2% 92.3% 92.2% 89.1% 76.7%
Jacksonville Beach, FL 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 98.0% 58.1% 100.0% 100.0% 100.0% 100.0%
Marineland, FL 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 70.0% 100.0% 100.0% 100.0% 100.0%
Palm Coast, FL 100.0% 100.0% 94.7% 76.2% 96.7% 96.6% 89.1% 43.2% 79.5% 79.5% 75.8% 59.7%

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 2026. “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 St. Johns 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.