Home › Providers › Xfinity › California Xfinity internet in California By the BroadbandByZIP editorial team · Updated September 2026 · How we make money
Xfinity reports service to at least half of residential locations in these 67 cities in California, based on FCC data. Pick yours for a coverage comparison with other providers.
City Locations covered Rank there Daly City, CA 99%+ #1 of 9 Santa Maria, CA 99%+ #1 of 8 Modesto, CA 99%+ #2 of 8 Alameda, CA 99%+ #2 of 8 Santa Cruz, CA 99%+ #1 of 6 Campbell, CA 99%+ #1 of 9 San Mateo, CA 99% #1 of 9 Antioch, CA 99% #1 of 5 San Ramon, CA 99% #1 of 7 Yuba City, CA 99% #2 of 9 Dublin, CA 99% #1 of 7 Citrus Heights, CA 99% #1 of 7 Merced, CA 99% #2 of 8 Manteca, CA 99% #2 of 10 Santa Rosa, CA 99% #1 of 6 Arden-Arcade, CA 99% #1 of 8 Livermore, CA 99% #1 of 6 Walnut Creek, CA 99% #1 of 8 Lodi, CA 99% #3 of 10 Brentwood, CA 99% #1 of 6 Rohnert Park, CA 99% #1 of 4 Berkeley, CA 99% #2 of 9 Vallejo, CA 99% #1 of 6 Fairfield, CA 99% #1 of 5 Vacaville, CA 99% #2 of 8 Carmichael, CA 99% #1 of 9 San Rafael, CA 99% #1 of 7 Hanford, CA 99% #2 of 7 Chico, CA 99% #1 of 8 Pittsburg, CA 99% #1 of 5 Stockton, CA 99% #2 of 10 Richmond, CA 99% #1 of 8 Tracy, CA 99% #2 of 7 Fremont, CA 99% #2 of 10 Salinas, CA 99% #2 of 8 Palo Alto, CA 99% #1 of 7 Sacramento, CA 99% #1 of 10 Visalia, CA 99% #2 of 9 Concord, CA 99% #1 of 7 Davis, CA 99% #2 of 10 Petaluma, CA 99% #1 of 5 Castro Valley, CA 99% #1 of 8 Oakland, CA 99% #1 of 10 Pleasanton, CA 99% #1 of 6 Elk Grove, CA 98% #3 of 10 Redwood City, CA 98% #1 of 9 San Jose, CA 98% #1 of 11 Clovis, CA 98% #2 of 7 Napa, CA 98% #1 of 4 Fresno, CA 98% #2 of 8 San Leandro, CA 98% #1 of 10 Tulare, CA 98% #2 of 7 Roseville, CA 98% #1 of 12 Hayward, CA 98% #1 of 11 South San Francisco, CA 98% #1 of 10 Madera, CA 98% #2 of 6 Union City, CA 98% #2 of 11 San Francisco, CA 98% #1 of 10 Rancho Cordova, CA 98% #1 of 10 Sunnyvale, CA 97% #1 of 9 Santa Clara, CA 97% #1 of 9 Cupertino, CA 97% #1 of 8 Mountain View, CA 97% #1 of 10 Novato, CA 97% #1 of 6 Folsom, CA 96% #1 of 9 Milpitas, CA 95% #1 of 9 El Dorado Hills, CA 94% #1 of 6
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