Coverage rankings for Santa Clara County, CA
Verizon currently ranks first for coverage in this area, with a coverage score of 66.2. 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 | Verizon | 66.2 | 78.3% | 78.0% | 46.1% | 33.5% | -95 dBm |
| 2 | T-Mobile | 57.3 | 52.0% | 51.4% | 47.6% | 37.7% | -88 dBm |
| 3 | AT&T | 53.9 | 61.3% | 60.0% | 51.7% | 27.0% | -108 dBm |
Scores include coverage area, network type, and average signal strength.
Cell phone coverage map for Santa Clara County, CA
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 Santa Clara County, CA
Verizon
- Overall
- 78.3%
- 4G LTE
- 78.0%
- 5G
- 46.1%
- Fast 5G
- 33.5%
T-Mobile
- Overall
- 52.0%
- 4G LTE
- 51.4%
- 5G
- 47.6%
- Fast 5G
- 37.7%
AT&T
- Overall
- 61.3%
- 4G LTE
- 60.0%
- 5G
- 51.7%
- Fast 5G
- 27.0%
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 Santa Clara County, CA
Cities and towns are shown for county-level comparison. Coverage percentages use land-area only coverage.
| City | Verizon | AT&T | T-Mobile |
|---|---|---|---|
| Alum Rock, CA | 100.0% 100.0% 100.0% 71.4% -93 dBm | 95.2% 95.2% 85.7% 47.6% -100 dBm | 100.0% 100.0% 100.0% 100.0% -81 dBm |
| Alviso, CA | 100.0% 100.0% 100.0% 97.3% -89 dBm | 83.4% 54.3% 78.0% 64.1% -110 dBm | 98.7% 98.7% 98.7% 90.6% -90 dBm |
| Burbank, CA | 100.0% 100.0% 100.0% 90.0% -90 dBm | 100.0% 100.0% 90.0% 50.0% -104 dBm | 100.0% 100.0% 100.0% 100.0% -76 dBm |
| Cambrian Park, CA | 100.0% 100.0% 100.0% 88.9% -84 dBm | 94.4% 94.4% 77.8% 22.2% -108 dBm | 100.0% 100.0% 100.0% 94.4% -94 dBm |
| Campbell, CA | 100.0% 100.0% 95.2% 75.2% -87 dBm | 100.0% 99.3% 98.6% 69.0% -103 dBm | 100.0% 100.0% 100.0% 98.6% -79 dBm |
| Coyote, CA | 100.0% 100.0% 95.1% 82.9% -83 dBm | 100.0% 100.0% 100.0% 80.5% -95 dBm | 100.0% 100.0% 100.0% 95.1% -82 dBm |
| Cupertino, CA | 100.0% 100.0% 94.0% 86.5% -92 dBm | 94.4% 93.6% 90.6% 53.4% -100 dBm | 96.6% 96.6% 93.6% 79.7% -86 dBm |
| East Foothills, CA | 100.0% 100.0% 93.6% 76.6% -92 dBm | 74.5% 68.1% 66.0% 10.6% -106 dBm | 100.0% 100.0% 100.0% 95.7% -88 dBm |
| Fruitdale, CA | 100.0% 100.0% 100.0% 100.0% -87 dBm | 100.0% 100.0% 100.0% 100.0% -96 dBm | 100.0% 100.0% 100.0% 100.0% -80 dBm |
| Gilroy, CA | 100.0% 100.0% 84.1% 56.3% -90 dBm | 99.5% 99.5% 97.4% 67.7% -99 dBm | 99.5% 99.5% 78.9% 59.4% -89 dBm |
| Lexington Hills, CA | 96.4% 96.4% 73.0% 54.1% -93 dBm | 96.4% 96.4% 91.9% 54.1% -109 dBm | 81.1% 80.2% 77.5% 44.1% -95 dBm |
| Los Altos, CA | 100.0% 100.0% 93.6% 67.5% -89 dBm | 100.0% 100.0% 98.1% 72.0% -101 dBm | 99.4% 99.4% 96.2% 72.0% -90 dBm |
| Los Altos Hills, CA | 99.5% 99.5% 77.5% 54.9% -93 dBm | 88.3% 87.8% 81.2% 51.6% -102 dBm | 95.8% 95.8% 86.9% 70.0% -89 dBm |
| Los Gatos, CA | 100.0% 100.0% 85.9% 68.4% -89 dBm | 90.5% 87.8% 85.6% 51.0% -102 dBm | 97.3% 97.3% 97.0% 88.2% -85 dBm |
| Loyola, CA | 100.0% 100.0% 86.2% 72.4% -88 dBm | 96.6% 96.6% 93.1% 58.6% -100 dBm | 100.0% 100.0% 96.6% 79.3% -88 dBm |
| Milpitas, CA | 99.4% 99.4% 92.8% 82.4% -85 dBm | 93.4% 92.5% 89.0% 59.4% -100 dBm | 95.0% 95.0% 92.5% 90.3% -80 dBm |
| Monte Sereno, CA | 100.0% 100.0% 51.3% 25.6% -94 dBm | 100.0% 97.4% 97.4% 43.6% -102 dBm | 100.0% 97.4% 97.4% 64.1% -92 dBm |
| Morgan Hill, CA | 99.7% 99.7% 79.3% 46.3% -92 dBm | 100.0% 99.7% 99.3% 71.3% -102 dBm | 95.0% 95.0% 93.3% 85.3% -84 dBm |
| Mount Hamilton, CA | 65.0% 64.9% 13.0% 9.0% -103 dBm | 9.8% 9.5% 2.9% 0.0% -119 dBm | 3.4% 2.7% 3.1% 0.3% -101 dBm |
| Mountain View, CA | 100.0% 100.0% 100.0% 93.5% -82 dBm | 100.0% 99.6% 99.3% 81.8% -99 dBm | 100.0% 100.0% 100.0% 95.6% -82 dBm |
| Palo Alto, CA | 94.2% 94.2% 75.4% 55.6% -93 dBm | 81.3% 80.5% 68.8% 54.4% -103 dBm | 82.0% 81.9% 78.9% 61.6% -89 dBm |
| San Jose, CA | 97.5% 97.5% 85.8% 74.3% -90 dBm | 94.8% 92.2% 90.4% 60.8% -103 dBm | 92.0% 91.8% 90.4% 82.9% -84 dBm |
| San Martin, CA | 100.0% 100.0% 100.0% 85.9% -88 dBm | 100.0% 100.0% 98.9% 60.6% -100 dBm | 100.0% 100.0% 97.8% 87.0% -84 dBm |
| Santa Clara, CA | 100.0% 100.0% 98.6% 91.0% -83 dBm | 100.0% 100.0% 99.5% 76.6% -97 dBm | 100.0% 100.0% 99.8% 97.0% -79 dBm |
| Saratoga, CA | 100.0% 100.0% 90.7% 66.1% -91 dBm | 95.7% 95.0% 84.4% 45.2% -105 dBm | 89.4% 89.4% 87.0% 67.1% -88 dBm |
| Stanford, CA | 100.0% 100.0% 69.2% 40.0% -91 dBm | 100.0% 100.0% 96.9% 70.8% -95 dBm | 96.9% 95.4% 96.9% 80.0% -90 dBm |
| Sunnyvale, CA | 100.0% 100.0% 95.6% 82.8% -85 dBm | 99.4% 98.7% 97.3% 76.3% -99 dBm | 100.0% 100.0% 99.8% 96.9% -81 dBm |
| East Palo Alto, CA | 100.0% 100.0% 100.0% 100.0% -80 dBm | 98.3% 98.3% 98.3% 79.7% -99 dBm | 98.3% 98.3% 98.3% 96.6% -80 dBm |
| Fremont, CA | 100.0% 100.0% 95.0% 83.4% -90 dBm | 87.3% 78.5% 81.6% 53.5% -103 dBm | 98.1% 98.1% 96.2% 82.7% -87 dBm |
| Interlaken, CA | 100.0% 100.0% 97.3% 79.1% -87 dBm | 100.0% 100.0% 100.0% 48.0% -105 dBm | 95.1% 92.0% 94.2% 77.3% -89 dBm |
| Ladera, CA | 100.0% 100.0% 90.9% 45.5% -101 dBm | 100.0% 100.0% 100.0% 90.9% -110 dBm | 100.0% 100.0% 100.0% 100.0% -92 dBm |
| Menlo Park, CA | 100.0% 100.0% 96.3% 86.3% -86 dBm | 99.2% 98.3% 99.2% 83.8% -98 dBm | 99.6% 99.2% 99.6% 95.9% -83 dBm |
| Portola Valley, CA | 99.5% 99.5% 32.7% 17.1% -93 dBm | 92.4% 91.5% 42.7% 11.8% -110 dBm | 85.8% 84.8% 80.1% 50.7% -91 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 Santa Clara County, CA 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.