In Diamond Heights there are 2 residential Cable providers covering 100.00% of the neighborhood. The average home can get speeds up to 1,387 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 Diamond Heights, San Francisco, CA.
To see availability maps for all providers including fiber, cable, DSL, and more in Diamond Heights, San Francisco, CA please click below.
Diamond Heights, San Francisco, CA Availability Maps
Cable Internet Service Providers in Diamond Heights
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 Diamond Heights are not shown.
Diamond Heights 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 Diamond Heights is cable internet available?
Cable Internet Availability Key
Cable is available in 100.00% of Diamond Heights. 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 Diamond Heights above to see who has service at your home.
How fast is cable internet in Diamond Heights?
The map below shows maximum cable internet speeds by area in Diamond Heights.
Cable Internet Speed Key
The average Diamond Heights home can get up to 1,387 Mbps on their cable internet plan. The fastest cable download speed in the neighborhood is 2,000 Mbps, which 20.52% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, 71.72% of homes can only purchase plans up to 1,200 Mbps. See the internet provider details below for info about their speed and coverage in Diamond Heights.
Cable internet speeds tend to be faster in the southwest parts of Diamond Heights, and slower in the north areas of the neighborhood.
Is cable the fastest internet I can get in Diamond Heights?
The fastest internet for you may vary based on where in Diamond Heights you live. In general, fiber competes most often with cable in the neighborhood.
- Fiber is the fastest internet type for 17.04% of Diamond Heights homes.
- Cable is fastest for 82.96% of the neighborhood.
- DSL is fastest for less than 1%.
- Fixed wireless is fastest for less than 1%.
- Satellite internet may be the only option for less than 1% of Diamond Heights homes.
Cable Providers in Depth
Below you'll find which TV and internet providers offer service in Diamond Heights, along with details on where in Diamond Heights and at what speeds.
XFINITY from Comcast Cable in Diamond Heights, San Francisco, CA
XFINITY cable coverage
About 100.00%, or 3,211 people, have XFINITY cable internet available to them in the neighborhood. The company covers the entire Diamond Heights area. XFINITY is one of the largest internet service providers internet service providers in the US, with internet service available in every corner of Diamond Heights.
XFINITY from Comcast cable download speeds
XFINITY is above average when comparing download speeds to all other internet providers in Diamond Heights. Versus other cable providers in the area, XFINITY cable is the slowest. There are 2 different maximum speeds throughout Diamond Heights. The fastest plan anyone in Diamond Heights can order from XFINITY goes up to 2,000 Mbps, the slowest package only goes up to 1,200 Mbps, and the neighborhood-wide average maximum speed for Diamond Heights customers is up to 1,364 Mbps.
Show all download speeds
- 20.5% up to 2,000.0 Mbps
- 79.5% up to 1,200.0 Mbps
XFINITY from Comcast cable upload speeds
In Diamond Heights 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 Diamond Heights cable providers. XFINITY offers 2 different upload speeds across the neighborhood, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in Diamond Heights 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 79 Mbps.
Show all upload speeds
- 20.5% up to 250.0 Mbps
- 79.5% up to 35.0 Mbps
Astound Broadband Cable in Diamond Heights, San Francisco, CA
Astound Broadband cable coverage
About 10.31%, or 331 people, have Astound Broadband cable internet available to them in the neighborhood. The company covers the northeast Diamond Heights area. Astound Broadband is one of the largest internet service providers internet service providers in the US, with internet service available in a very small piece of Diamond Heights.
Astound Broadband cable download speeds
Astound Broadband is above average when comparing download speeds to all other internet providers in Diamond Heights. Versus other cable providers in the area, Astound Broadband cable is the fastest. There are no different maximum speeds throughout Diamond Heights. The fastest plan anyone in Diamond Heights can order from Astound Broadband goes up to 1,500 Mbps, and all Diamond Heights customers can get this speed.
Show all download speeds
- 100.0% up to 1,500.0 Mbps
Astound Broadband cable upload speeds
In Diamond Heights download speeds tend to be faster than than upload speeds for Astound Broadband cable. Compared to other ISPs, Astound Broadband is below average where upload speeds are concerned, and the slowest compared to other Diamond Heights cable providers. Astound Broadband offers no different upload speeds across the neighborhood. The fastest upload speed available to anyone from this ISP in Diamond Heights is up to 50 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 50.0 Mbps
Diamond Heights Cable by Area
This information is most helpful to those looking for homes or considering moving to Diamond Heights or any of the areas nearby.
How does cable internet in Diamond Heights compare to the rest of San Francisco?
Cable internet speeds in Diamond Heights are much faster versus the average speeds in San Francisco: 0.00 Mbps in San Francisco versus 1,387 Mbps in the neighborhood. The city has similar cable availability compared to the neighborhood. Average cable coverage in San Francisco is 0.00% versus 100.00% in Diamond Heights.
What zip codes have cable internet?
Cable internet coverage varies by zip code and neighborhood. Some examples in or around Diamond Heights 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 neighborhoods?
Below are neighborhoods nearby and with similar populations. This comparison can be useful if living somewhere with fast internet is important to you.
Nearby Neighborhoods
- Noe Valley, San Francisco, CA: equal cable coverage, faster speeds
- Glen Park, San Francisco, CA: equal cable coverage, faster speeds
- Twin Peaks, San Francisco, CA: equal cable coverage, faster speeds
- Castro-Upper Market, San Francisco, CA: equal cable coverage, faster speeds
- West of Twin Peaks, San Francisco, CA: equal cable coverage, faster speeds
- Liberty Street Historic District, San Francisco, CA: equal cable coverage, faster speeds
- St Marys Park, San Francisco, CA: equal cable coverage, faster speeds
- Bernal Heights, San Francisco, CA: equal cable coverage, faster speeds
- Cole Valley, San Francisco, CA: equal cable coverage, faster speeds
- Duboce Triangle, San Francisco, CA: equal cable coverage, faster speeds
Neighborhoods with Similar Populations
- Feasterville, Feasterville-Trevose, PA: equal cable coverage, faster speeds
- South Hill, Bellingham, WA: equal cable coverage, slower speeds
- Kings Mill, Broomfield, CO: equal cable coverage, faster speeds
- Jefferson Heights, San Antonio, TX: less cable coverage, slower speeds
- Idylwood, Redmond, WA: equal cable coverage, faster speeds
- Stratford Hills, Richmond, VA: less cable coverage, slower speeds
- Highland Farms-San Antonio, San Antonio, TX: less cable coverage, slower speeds
- Talus, Issaquah, WA: equal cable coverage, faster speeds
- Glenbrook, Vienna, WV: less cable coverage, faster speeds
- Tarrytown, Gary, IN: equal cable coverage, faster speeds