Coverage rankings for Sonoma County, CA
Verizon currently ranks first for coverage in this area, with a coverage score of 65.6. 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 | 65.6 | 79.7% | 79.5% | 43.0% | 32.0% | -96 dBm |
| 2 | T-Mobile | 61.2 | 57.7% | 56.3% | 54.0% | 39.9% | -90 dBm |
| 3 | AT&T | 55.0 | 66.9% | 66.6% | 52.8% | 26.8% | -114 dBm |
Scores include coverage area, network type, and average signal strength.
Cell phone coverage map for Sonoma 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 Sonoma County, CA
Verizon
- Overall
- 79.7%
- 4G LTE
- 79.5%
- 5G
- 43.0%
- Fast 5G
- 32.0%
T-Mobile
- Overall
- 57.7%
- 4G LTE
- 56.3%
- 5G
- 54.0%
- Fast 5G
- 39.9%
AT&T
- Overall
- 66.9%
- 4G LTE
- 66.6%
- 5G
- 52.8%
- Fast 5G
- 26.8%
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 Sonoma County, CA
Cities and towns are shown for county-level comparison. Coverage percentages use land-area only coverage.
| City | Verizon | AT&T | T-Mobile |
|---|---|---|---|
| Annapolis, CA | 67.8% 67.8% 0.0% 0.0% -99 dBm | 15.1% 15.1% 0.1% 0.0% -115 dBm | 0.0% 0.0% 0.0% 0.0% -100 dBm |
| Bloomfield, CA | 99.0% 99.0% 77.0% 58.2% -91 dBm | 38.3% 38.3% 10.7% 2.0% -120 dBm | 81.1% 81.1% 80.1% 52.6% -92 dBm |
| Bodega, CA | 98.5% 98.5% 30.9% 26.5% -99 dBm | 95.6% 95.6% 73.5% 29.4% -118 dBm | 98.5% 98.5% 97.1% 92.6% -76 dBm |
| Bodega Bay, CA | 99.0% 99.0% 61.0% 45.0% -93 dBm | 97.5% 97.5% 93.5% 74.0% -108 dBm | 97.5% 97.5% 91.5% 85.0% -82 dBm |
| Boyes Hot Springs, CA | 100.0% 100.0% 91.7% 75.0% -89 dBm | 100.0% 100.0% 100.0% 95.8% -104 dBm | 100.0% 100.0% 100.0% 100.0% -86 dBm |
| Carmet, CA | 100.0% 100.0% 83.3% 66.7% -82 dBm | 83.3% 83.3% 50.0% 50.0% -120 dBm | 83.3% 83.3% 16.7% 0.0% -102 dBm |
| Cazadero, CA | 23.6% 23.6% 4.6% 1.1% -106 dBm | 40.2% 40.2% 29.9% 8.0% -118 dBm | 21.8% 21.8% 20.7% 17.2% -92 dBm |
| Cloverdale, CA | 100.0% 100.0% 73.5% 61.4% -91 dBm | 100.0% 100.0% 98.8% 33.7% -107 dBm | 98.8% 98.8% 89.2% 73.5% -90 dBm |
| Cotati, CA | 100.0% 100.0% 82.6% 52.2% -87 dBm | 100.0% 100.0% 100.0% 78.3% -102 dBm | 100.0% 100.0% 100.0% 89.1% -85 dBm |
| Duncans Mills, CA | 60.7% 60.7% 6.5% 1.9% -104 dBm | 32.9% 32.9% 15.3% 7.3% -114 dBm | 17.5% 17.0% 10.7% 4.6% -97 dBm |
| El Verano, CA | 100.0% 100.0% 96.4% 82.1% -89 dBm | 100.0% 100.0% 100.0% 89.3% -114 dBm | 100.0% 100.0% 100.0% 35.7% -97 dBm |
| Eldridge, CA | 100.0% 100.0% 68.8% 37.5% -94 dBm | 100.0% 100.0% 100.0% 62.5% -108 dBm | 75.0% 75.0% 68.8% 31.3% -98 dBm |
| Fetters Hot Springs-Agua Caliente, CA | 100.0% 100.0% 85.7% 74.3% -91 dBm | 100.0% 100.0% 97.1% 54.3% -107 dBm | 97.1% 97.1% 94.3% 65.7% -90 dBm |
| Forestville, CA | 93.5% 93.5% 58.9% 41.1% -96 dBm | 86.3% 86.3% 72.6% 21.0% -115 dBm | 96.0% 95.2% 96.0% 87.9% -82 dBm |
| Fulton, CA | 100.0% 100.0% 100.0% 100.0% -80 dBm | 100.0% 100.0% 100.0% 97.9% -113 dBm | 100.0% 100.0% 97.9% 83.3% -91 dBm |
| Geyserville, CA | 100.0% 100.0% 97.3% 96.4% -82 dBm | 100.0% 100.0% 98.2% 9.0% -111 dBm | 99.1% 99.1% 99.1% 92.8% -79 dBm |
| Glen Ellen, CA | 100.0% 100.0% 35.3% 25.5% -97 dBm | 98.0% 98.0% 94.1% 37.3% -113 dBm | 21.6% 21.6% 2.0% 0.0% -103 dBm |
| Graton, CA | 100.0% 100.0% 97.2% 91.7% -85 dBm | 100.0% 97.2% 97.2% 22.2% -115 dBm | 100.0% 100.0% 94.4% 63.9% -93 dBm |
| Guerneville, CA | 99.1% 99.1% 25.4% 15.1% -100 dBm | 94.0% 94.0% 80.6% 56.9% -112 dBm | 95.3% 86.6% 95.3% 72.4% -88 dBm |
| Healdsburg, CA | 100.0% 100.0% 92.5% 76.6% -86 dBm | 100.0% 100.0% 100.0% 58.9% -105 dBm | 99.1% 99.1% 96.3% 72.9% -88 dBm |
| Jenner, CA | 69.2% 69.2% 0.0% 0.0% -105 dBm | 40.4% 40.4% 1.9% 0.0% -120 dBm | 48.1% 48.1% 32.7% 5.8% -98 dBm |
| Kenwood, CA | 99.2% 99.2% 44.4% 19.4% -98 dBm | 98.4% 98.4% 96.0% 42.7% -111 dBm | 58.1% 57.3% 33.1% 15.3% -97 dBm |
| Larkfield-Wikiup, CA | 100.0% 100.0% 89.8% 73.2% -89 dBm | 94.5% 94.5% 81.1% 54.3% -114 dBm | 94.5% 94.5% 92.9% 85.8% -84 dBm |
| Monte Rio, CA | 100.0% 100.0% 36.2% 10.6% -96 dBm | 91.5% 91.5% 78.7% 34.0% -114 dBm | 85.1% 83.0% 83.0% 59.6% -91 dBm |
| Occidental, CA | 99.2% 99.2% 53.8% 40.3% -94 dBm | 58.0% 58.0% 45.4% 22.7% -111 dBm | 80.7% 78.2% 80.7% 68.1% -83 dBm |
| Penngrove, CA | 100.0% 100.0% 90.7% 66.0% -91 dBm | 100.0% 100.0% 99.0% 55.7% -109 dBm | 95.9% 94.8% 92.8% 75.3% -86 dBm |
| Petaluma, CA | 100.0% 100.0% 98.6% 83.5% -88 dBm | 100.0% 100.0% 98.8% 65.9% -108 dBm | 100.0% 100.0% 99.1% 82.4% -87 dBm |
| Petaluma Center, CA | 100.0% 100.0% 93.1% 93.1% -82 dBm | 100.0% 100.0% 96.6% 82.8% -102 dBm | 100.0% 100.0% 100.0% 100.0% -66 dBm |
| Rio Nido, CA | 74.4% 74.3% 19.4% 12.1% -101 dBm | 78.6% 78.0% 62.5% 44.8% -114 dBm | 65.8% 58.7% 63.9% 43.0% -90 dBm |
| Rohnert Park, CA | 100.0% 100.0% 98.9% 81.3% -87 dBm | 100.0% 100.0% 100.0% 76.1% -101 dBm | 100.0% 100.0% 97.7% 75.0% -89 dBm |
| Salmon Creek, CA | 100.0% 100.0% 38.5% 30.8% -101 dBm | 92.3% 92.3% 57.7% 50.0% -118 dBm | 80.8% 80.8% 42.3% 23.1% -94 dBm |
| Santa Rosa, CA | 100.0% 100.0% 88.0% 69.8% -90 dBm | 98.7% 98.7% 95.9% 62.5% -107 dBm | 99.3% 98.5% 97.7% 82.5% -87 dBm |
| Sea Ranch, CA | 83.0% 83.0% 0.0% 0.0% -96 dBm | 71.2% 71.2% 8.1% 6.1% -110 dBm | N/A N/A N/A N/A N/A |
| Sebastopol, CA | 100.0% 100.0% 95.6% 88.9% -84 dBm | 100.0% 100.0% 97.8% 46.7% -110 dBm | 97.8% 97.8% 97.8% 75.6% -87 dBm |
| Sereno del Mar, CA | 88.9% 88.9% 83.3% 83.3% -77 dBm | 61.1% 61.1% 27.8% 22.2% -120 dBm | 5.6% 5.6% 0.0% 0.0% -100 dBm |
| Sonoma, CA | 100.0% 100.0% 100.0% 98.4% -84 dBm | 100.0% 100.0% 100.0% 82.8% -107 dBm | 100.0% 100.0% 100.0% 87.5% -88 dBm |
| Sonoma State University, CA | 100.0% 100.0% 81.8% 27.3% -95 dBm | 100.0% 100.0% 100.0% 100.0% -98 dBm | 100.0% 100.0% 100.0% 100.0% -74 dBm |
| Temelec, CA | 100.0% 100.0% 97.3% 94.6% -81 dBm | 86.5% 86.5% 86.5% 16.2% -118 dBm | 91.9% 91.9% 67.6% 59.5% -91 dBm |
| The Sea Ranch, CA | 83.3% 83.3% 0.0% 0.0% -96 dBm | 72.8% 72.8% 8.6% 6.5% -110 dBm | N/A N/A N/A N/A N/A |
| Timber Cove, CA | 30.9% 30.9% 0.0% 0.0% -106 dBm | 25.7% 25.7% 5.9% 5.1% -119 dBm | 0.7% 0.0% 0.7% 0.0% -100 dBm |
| Valley Ford, CA | 100.0% 100.0% 57.4% 54.1% -97 dBm | 54.1% 54.1% 27.9% 1.6% -120 dBm | 95.1% 95.1% 91.8% 80.3% -82 dBm |
| Villa Grande, CA | 100.0% 100.0% 0.0% 0.0% -100 dBm | 100.0% 100.0% 100.0% 0.0% -120 dBm | 100.0% 100.0% 100.0% 100.0% -90 dBm |
| Windsor, CA | 100.0% 100.0% 94.4% 81.4% -87 dBm | 100.0% 100.0% 99.4% 48.6% -109 dBm | 98.3% 97.7% 97.7% 87.6% -85 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 Sonoma 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.