In Sonoma County there is 1 residential Cable provider covering 96.09% of the county. The average home can get speeds up to 1,643 Mbps. Note that we may have a financial relationship with some of the providers below. This does not influence rankings, and helps us provide high-quality detailed information for free.
This page contains all Cable internet providers in Sonoma County, CA.
To see availability maps for all providers including fiber, cable, DSL, and more in Sonoma County, CA please click below.
Sonoma County, CA Availability Maps
Cable Internet Service Provider in Sonoma County
Data updated 11/14/2025, based on FCC data from 12/31/2024. This is the most current data available as of .
To avoid wasting your time, providers with less than 1% coverage in Sonoma County are not shown.
Sonoma County Satellite TV & Internet Providers
DISH Satellite TV
DIRECTV Satellite TV
Not sure whether to choose Dish or DIRECTV? For most people most of the time we recommend DISH. But click here to learn more.
Viasat Satellite Internet
Where in Sonoma County is cable internet available?
Cable Internet Availability Key
Cable is available in 96.09% of Sonoma County. Areas in green have cable internet service, where areas in yellow or red may not. The most widely available provider is XFINITY. Call one of the companies with service in Sonoma County above to see who has service at your home.
How fast is cable internet in Sonoma County?
The map below shows maximum cable internet speeds by area in Sonoma County.
Cable Internet Speed Key
The average Sonoma County home can get up to 1,643 Mbps on their cable internet plan. The fastest cable download speed in the county is 2,000 Mbps, which 53.22% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, less than 1% of homes can only purchase plans up to 940 Mbps. See the internet provider details below for info about their speed and coverage in Sonoma County.
Cable internet speeds tend to be faster in the south parts of Sonoma County, and slower in the west areas of the county.
Is cable the fastest internet I can get in Sonoma County?
The fastest internet for you may vary based on where in Sonoma County you live. In general, fiber competes most often with cable in the county.
- Fiber is the fastest internet type for 32.22% of Sonoma County homes.
- Cable is fastest for 64.53% of the county.
- DSL is fastest for less than 1%.
- Fixed wireless is fastest for 1.88%.
- Satellite internet may be the only option for 1.13% of Sonoma County homes.
Cable Providers in Depth
Below you'll find which TV and internet providers offer service in Sonoma County, along with details on where in Sonoma County and at what speeds.
XFINITY from Comcast Cable in Sonoma County, CA
XFINITY cable coverage
About 96.05%, or 469,558 people, have XFINITY cable internet available to them in the county. The company covers the entire Sonoma County area. XFINITY is one of the largest internet service providers internet service providers in the US, with internet service available in most of Sonoma County.
XFINITY from Comcast cable download speeds
XFINITY is above average when comparing download speeds to all other internet providers in Sonoma County. Versus other cable providers in the area, XFINITY cable is the fastest. There are 2 different maximum speeds throughout Sonoma County. The fastest plan anyone in Sonoma County can order from XFINITY goes up to 2,000 Mbps, the slowest package only goes up to 1,200 Mbps, and the county-wide average maximum speed for Sonoma County customers is up to 1,643 Mbps.
Show all download speeds
- 55.4% up to 2,000.0 Mbps
- 44.6% up to 1,200.0 Mbps
XFINITY from Comcast cable upload speeds
In Sonoma County download speeds tend to be faster than than upload speeds for XFINITY cable. Compared to other ISPs, XFINITY is below average where upload speeds are concerned, and the fastest compared to other Sonoma County cable providers. XFINITY offers 2 different upload speeds across the county, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in Sonoma County is up to 250 Mbps. Some customers have slower plan choices, which only go up to 35 Mbps. On average, XFINITY customers can get speeds up to 154 Mbps.
Show all upload speeds
- 55.4% up to 250.0 Mbps
- 44.6% up to 35.0 Mbps
Sonoma County Cable by Area
This information is most helpful to those looking for homes or considering moving to Sonoma County or any of the areas nearby.
How does cable internet in Sonoma County compare to the rest of California?
Cable internet speeds in Sonoma County are much faster versus the average speeds in California: 0.00 Mbps in California versus 1,643 Mbps in the county. The state has similar cable availability compared to the county. Average cable coverage in California is 0.00% versus 96.09% in Sonoma County.
What zip codes have cable internet?
Cable internet coverage varies by zip code and neighborhood. Some examples in or around Sonoma County are shown below. You can enter any zip code here to see TV and internet providers by zip code.
What does cable internet look like in other counties?
Below are counties nearby and with similar populations. This comparison can be useful if living somewhere with fast internet is important to you.
Nearby Counties
- Napa County, CA: less cable coverage, slower speeds
- Yolo County, CA: less cable coverage, faster speeds
- Sacramento County, CA: more cable coverage, faster speeds
- Amador County, CA: less cable coverage, slower speeds
- Grand County, UT: less cable coverage, slower speeds
- Montrose County, CO: less cable coverage, slower speeds
- Fremont County, CO: less cable coverage, slower speeds
- Greeley County, KS: less cable coverage, slower speeds
- Wichita County, KS: less cable coverage, slower speeds
- Scott County, KS: less cable coverage, slower speeds
Counties with Similar Populations
- Spokane County, WA: less cable coverage, faster speeds
- Greenville County, SC: more cable coverage, slower speeds
- Guilford County, NC: more cable coverage, slower speeds
- Hampden County, MA: more cable coverage, faster speeds
- Hillsborough County, NH: more cable coverage, faster speeds
- Jefferson County, CO: less cable coverage, faster speeds
- Ramsey County, MN: more cable coverage, slower speeds
- Richmond County, NY: more cable coverage, slower speeds
- Santa Barbara County, CA: less cable coverage, slower speeds
- Solano County, CA: less cable coverage, faster speeds