Coverage rankings for St. Lawrence County, NY
AT&T currently ranks first for coverage in this area, with a coverage score of 52.3. Compare Wireless Carriers uses FCC broadband map data to estimate and calculate coverage scores. More on that further below.
| Rank | Carrier | Score | Overall | 4G LTE | 5G | Fast 5G | Average Signal |
|---|---|---|---|---|---|---|---|
| 1 | AT&T | 52.3 | 71.4% | 71.4% | 32.4% | 23.9% | -115 dBm |
| 2 | Verizon | 52.2 | 78.5% | 78.4% | 17.8% | 10.2% | -101 dBm |
| 3 | T-Mobile | 30.1 | 25.5% | 25.5% | 20.3% | 10.2% | -96 dBm |
Scores include coverage area, network type, and average signal strength.
Cell phone coverage map for St. Lawrence County, NY
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.
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 St. Lawrence County, NY
AT&T
- Overall
- 71.4%
- 4G LTE
- 71.4%
- 5G
- 32.4%
- Fast 5G
- 23.9%
Verizon
- Overall
- 78.5%
- 4G LTE
- 78.4%
- 5G
- 17.8%
- Fast 5G
- 10.2%
T-Mobile
- Overall
- 25.5%
- 4G LTE
- 25.5%
- 5G
- 20.3%
- Fast 5G
- 10.2%
Coverage varies by neighborhood. Your carrier shouldn’t.
US Mobile lets you switch between all three major networks, so you can choose the one that works best where you actually use your phone.
Pricing, network access, switching terms, and home internet availability may vary.
Coverage by city in St. Lawrence County, NY
Cities and towns are shown for county-level comparison. Coverage percentages use land-area only coverage.
| City | Verizon | AT&T | T-Mobile |
|---|---|---|---|
| Brasher Falls, NY | 100.0% 100.0% 0.0% 0.0% -103 dBm | 100.0% 100.0% 86.0% 76.7% -115 dBm | 93.0% 93.0% 72.1% 9.3% -102 dBm |
| Brier Hill, NY | 100.0% 100.0% 37.1% 22.8% -101 dBm | 98.5% 98.5% 62.4% 61.9% -116 dBm | 52.0% 52.0% 38.6% 19.8% -98 dBm |
| Canton, NY | 100.0% 100.0% 84.7% 61.2% -88 dBm | 100.0% 100.0% 99.0% 80.6% -100 dBm | 100.0% 100.0% 100.0% 85.7% -85 dBm |
| Chase Mills, NY | 78.7% 78.5% 14.3% 5.1% -106 dBm | 96.0% 96.0% 18.0% 8.7% -119 dBm | 5.0% 5.0% 1.9% 0.0% -106 dBm |
| Childwold, NY | 48.7% 48.7% 1.7% 0.9% -104 dBm | 44.8% 44.8% 2.5% 2.1% -115 dBm | 11.7% 11.7% 9.6% 4.7% -96 dBm |
| Chippewa Bay, NY | 100.0% 100.0% 11.1% 11.1% -99 dBm | 100.0% 100.0% 100.0% 100.0% -111 dBm | 100.0% 100.0% 100.0% 88.9% -91 dBm |
| Colton, NY | 100.0% 100.0% 56.4% 33.3% -96 dBm | 100.0% 100.0% 5.1% 5.1% -114 dBm | 71.8% 71.8% 61.5% 15.4% -100 dBm |
| Cranberry Lake, NY | 72.0% 72.0% 0.0% 0.0% -99 dBm | 83.9% 83.9% 53.0% 48.3% -115 dBm | 0.2% 0.2% 0.0% 0.0% -110 dBm |
| De Kalb Junction, NY | 98.8% 98.8% 34.8% 21.0% -99 dBm | 97.7% 97.7% 26.0% 19.9% -112 dBm | 61.7% 61.7% 49.9% 25.5% -96 dBm |
| De Peyster, NY | 87.1% 87.1% 2.1% 0.5% -104 dBm | 77.5% 77.5% 8.9% 4.4% -120 dBm | 3.3% 3.3% 0.2% 0.0% -109 dBm |
| DeKalb Junction, NY | 100.0% 100.0% 48.2% 35.3% -96 dBm | 100.0% 100.0% 12.9% 12.9% -106 dBm | 98.8% 98.8% 90.6% 50.6% -94 dBm |
| Edwards, NY | 100.0% 100.0% 100.0% 84.2% -88 dBm | 100.0% 100.0% 0.0% 0.0% -94 dBm | 100.0% 100.0% 100.0% 100.0% -80 dBm |
| Fine, NY | 94.7% 94.7% 10.5% 1.3% -99 dBm | 90.8% 90.8% 3.9% 2.6% -113 dBm | 1.3% 1.3% 1.3% 0.0% -100 dBm |
| Gouverneur, NY | 100.0% 100.0% 96.2% 86.5% -88 dBm | 100.0% 100.0% 100.0% 100.0% -103 dBm | 100.0% 100.0% 100.0% 96.2% -87 dBm |
| Hailesboro, NY | 100.0% 100.0% 66.1% 45.0% -93 dBm | 100.0% 100.0% 99.1% 96.3% -106 dBm | 88.1% 88.1% 88.1% 66.1% -89 dBm |
| Hammond, NY | 100.0% 100.0% 50.0% 41.7% -99 dBm | 100.0% 100.0% 100.0% 83.3% -113 dBm | 100.0% 100.0% 100.0% 66.7% -91 dBm |
| Hannawa Falls, NY | 100.0% 100.0% 37.6% 21.4% -100 dBm | 100.0% 100.0% 9.4% 6.0% -110 dBm | 91.5% 91.5% 73.5% 12.8% -101 dBm |
| Hermon, NY | 100.0% 100.0% 41.7% 16.7% -99 dBm | 100.0% 100.0% 16.7% 16.7% -111 dBm | N/A N/A N/A N/A N/A |
| Heuvelton, NY | 100.0% 100.0% 0.0% 0.0% -80 dBm | 100.0% 100.0% 84.2% 15.8% -118 dBm | 100.0% 100.0% 100.0% 100.0% -75 dBm |
| Lisbon, NY | 96.5% 96.4% 14.0% 6.6% -103 dBm | 98.6% 98.6% 25.8% 15.8% -113 dBm | 38.1% 38.0% 30.8% 16.6% -95 dBm |
| Madrid, NY | 100.0% 100.0% 81.7% 70.7% -86 dBm | 100.0% 100.0% 100.0% 85.4% -98 dBm | 2.4% 2.4% 0.0% 0.0% -110 dBm |
| Massena, NY | 96.3% 96.3% 76.6% 63.6% -91 dBm | 100.0% 100.0% 91.6% 69.2% -115 dBm | 100.0% 100.0% 98.1% 87.9% -83 dBm |
| Morristown, NY | 100.0% 100.0% 87.5% 66.7% -94 dBm | 95.8% 95.8% 37.5% 37.5% -119 dBm | 83.3% 83.3% 41.7% 0.0% -105 dBm |
| Newton Falls, NY | 68.1% 68.1% 2.7% 0.3% -101 dBm | 50.3% 50.3% 9.1% 8.6% -115 dBm | N/A N/A N/A N/A N/A |
| Nicholville, NY | 97.8% 97.8% 25.6% 19.6% -99 dBm | 98.2% 98.2% 19.4% 5.1% -113 dBm | 51.5% 51.5% 39.9% 18.1% -97 dBm |
| Norfolk, NY | 100.0% 100.0% 46.9% 35.9% -95 dBm | 100.0% 100.0% 15.6% 12.5% -97 dBm | 93.8% 93.8% 89.1% 81.3% -81 dBm |
| North Lawrence, NY | 97.8% 97.8% 25.6% 19.6% -99 dBm | 98.2% 98.2% 19.4% 5.1% -113 dBm | 51.5% 51.5% 39.9% 18.1% -97 dBm |
| Norwood, NY | 100.0% 100.0% 69.4% 49.0% -93 dBm | 100.0% 100.0% 69.4% 63.3% -116 dBm | 16.3% 16.3% 6.1% 2.0% -104 dBm |
| Ogdensburg, NY | 100.0% 100.0% 80.5% 61.9% -94 dBm | 100.0% 100.0% 98.2% 85.0% -100 dBm | 100.0% 100.0% 100.0% 82.3% -85 dBm |
| Oswegatchie, NY | 49.6% 49.5% 3.4% 1.3% -106 dBm | 48.6% 48.6% 1.1% 0.6% -114 dBm | 0.2% 0.2% 0.1% 0.0% -107 dBm |
| Parishville, NY | 100.0% 100.0% 75.7% 45.9% -91 dBm | 100.0% 100.0% 100.0% 85.1% -100 dBm | N/A N/A N/A N/A N/A |
| Piercefield, NY | 95.1% 95.1% 16.5% 5.6% -100 dBm | 25.3% 25.3% 0.0% 0.0% -120 dBm | 4.8% 4.8% 3.3% 1.2% -101 dBm |
| Potsdam, NY | 100.0% 100.0% 81.5% 64.8% -89 dBm | 100.0% 100.0% 100.0% 83.3% -98 dBm | 100.0% 100.0% 99.1% 95.4% -86 dBm |
| Pyrites, NY | 99.1% 99.1% 23.8% 12.9% -101 dBm | 94.1% 94.1% 25.2% 20.2% -117 dBm | 24.1% 24.1% 15.5% 3.4% -102 dBm |
| Raymondville, NY | 90.6% 90.6% 1.9% 1.9% -109 dBm | 100.0% 100.0% 73.6% 32.1% -114 dBm | 49.1% 49.1% 37.7% 20.8% -97 dBm |
| Rensselaer Falls, NY | 100.0% 100.0% 0.0% 0.0% -108 dBm | 100.0% 100.0% 100.0% 100.0% -98 dBm | 100.0% 100.0% 100.0% 100.0% -83 dBm |
| Richville, NY | 100.0% 100.0% 100.0% 83.3% -79 dBm | 100.0% 100.0% 100.0% 94.4% -94 dBm | N/A N/A N/A N/A N/A |
| Russell, NY | 68.7% 68.7% 12.2% 6.0% -104 dBm | 54.7% 54.7% 19.8% 19.0% -117 dBm | 4.1% 4.1% 2.5% 0.1% -104 dBm |
| South Colton, NY | 35.0% 35.0% 7.4% 3.9% -101 dBm | 39.2% 39.2% 0.1% 0.1% -112 dBm | 0.5% 0.5% 0.2% 0.0% -103 dBm |
| Star Lake, NY | 98.0% 98.0% 46.9% 25.5% -96 dBm | 2.0% 2.0% 0.0% 0.0% -120 dBm | N/A N/A N/A N/A N/A |
| Waddington, NY | 100.0% 100.0% 73.5% 51.0% -95 dBm | 100.0% 100.0% 100.0% 100.0% -106 dBm | 98.0% 98.0% 95.9% 79.6% -90 dBm |
| Wanakena, NY | 10.0% 10.0% 0.2% 0.0% -103 dBm | 4.9% 4.9% 1.3% 1.1% -120 dBm | N/A N/A N/A N/A N/A |
| West Stockholm, NY | 92.5% 92.5% 24.0% 12.1% -100 dBm | 90.0% 90.0% 58.2% 38.1% -114 dBm | 35.6% 35.6% 27.4% 12.9% -97 dBm |
| Winthrop, NY | 98.3% 98.3% 0.0% 0.0% -101 dBm | 100.0% 100.0% 87.9% 51.7% -115 dBm | 74.1% 74.1% 67.2% 32.8% -97 dBm |
| Akwesasne, NY | 98.9% 98.8% 44.3% 38.0% -102 dBm | 99.9% 99.9% 95.0% 80.8% -111 dBm | 74.0% 74.0% 57.6% 28.0% -97 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 St. Lawrence County, NY 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.