In San Dimas there are 8 residential internet providers covering 92.79% of the city. The average home can get speeds up to 5,923 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.
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8 Internet Service Providers in San Dimas
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 San Dimas are not shown.
San Dimas 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
Availability maps for all providers in San Dimas
Using the dropdown below, please select a provider. Green indicates nearly all homes have service, red indicates few homes have service, and blank indicates no service.
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Internet service is available in 92.79% of San Dimas. Using our interactive availability map, you can compare service areas for different providers, we include fiber, cable, DSL, or fixed wireless internet service for all providers who offer it. You will notice that some providers might be listed multiple times for each service. If you find no providers cover the location you're looking at, you can opt for satellite service. The most widely available provider is Frontier. Now you can call companies in San Dimas with more confidence that they might be available.
How fast are internet speeds in San Dimas?
The map below shows maximum internet speeds by area in San Dimas.
Internet Speed Key
The average San Dimas home can get up to 5,923 Mbps on their internet plan. For most people, the fastest download speed in the city is 7,000 Mbps, which 75.73% 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 25 Mbps. See the internet provider details below for info about their speed and coverage in San Dimas.
Internet speeds tend to be faster in the northeast parts of San Dimas, and slower in the southwest areas of the city.
What type of internet should I choose in San Dimas?
The fastest internet for you may vary based on where in San Dimas you live. If speed is your main concern, fiber will be the fastest internet in the city.
- Fiber is the fastest internet type for 76.38% of San Dimas homes.
- Cable is fastest for 16.28% of the city.
- DSL is fastest for less than 1%.
- Fixed wireless is fastest for less than 1%.
- Satellite internet may be the only option for 7.21% of San Dimas homes.
Internet Market Health in San Dimas
Internet Competition Key
The map shows how competitive the San Dimas internet service market is. Areas in green have more alternatives, areas in yellow have a few choices, and areas in red may have only one provider. More competition usually means faster speeds and better prices for you, the customer.
Below are quick facts on internet competition and market health in San Dimas based on what connections the average home has availabile:
- Average number of internet service providers to a home: 5.6 (healthy)
- Average types of service (fiber, cable, DSL, etc): 2.9 (healthy)
- Average providers with broadband (25 Mbps+) speeds: 5.5 (healthy)
Overall, competition is healthy.
San Dimas internet customers have the ability to buy internet service from 1 to 8 different providers, depending on where they live. For different types of service, San Dimas homes have between 1 and 4 options. The type(s) of service available are cable, fixed wireless, fiber, and dsl, though these may vary depending on the region within the city.
When it comes to broadband download speeds faster than 25 Mbps, the situation is worse. San Dimas internet customers who want faster speeds have between 1 and 8 choices of companies offering speeds up to or over 25 Mbps.
More internet companies with faster speeds means fewer monopolies and better prices for customers. In promoting a free market for internet, San Dimas is doing better than most.
TV & Internet Providers in Depth
Below you'll find which TV and internet providers offer service in San Dimas, along with details on where in San Dimas and at what speeds.
Spectrum Cable in San Dimas, CA
Spectrum cable coverage
About 92.60%, or 34,983 people, have Spectrum cable internet available to them in the city. The company covers the entire San Dimas area. Spectrum is one of the largest internet service providers internet service providers in the US, with internet service available in most of San Dimas.
Spectrum cable download speeds
Spectrum is below average when comparing download speeds to all other internet providers in San Dimas. Versus other cable providers in the area, Spectrum cable is the fastest. There are no different maximum speeds throughout San Dimas. The fastest plan anyone in San Dimas can order from Spectrum goes up to 1,000 Mbps, and all San Dimas customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
Spectrum cable upload speeds
In San Dimas download speeds tend to be faster than than upload speeds for Spectrum cable. Compared to other ISPs, Spectrum is below average where upload speeds are concerned, and the fastest compared to other San Dimas cable providers. Spectrum offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in San Dimas is up to 35 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 35.0 Mbps
Frontier Communications Fiber in San Dimas, CA
Frontier fiber coverage
About 76.38%, or 28,854 people, have Frontier fiber internet available to them in the city. The company covers the entire San Dimas area. Frontier is one of the largest internet service providers internet service providers in the US, with internet service available in much of San Dimas.
Frontier Communications fiber download speeds
Frontier is the fastest when comparing download speeds to all other internet providers in San Dimas. Versus other fiber providers in the area, Frontier fiber is the fastest. There are 2 different maximum speeds throughout San Dimas. The fastest plan anyone in San Dimas can order from Frontier goes up to 7,000 Mbps, the slowest package only goes up to 5,000 Mbps, and the city-wide average maximum speed for San Dimas customers is up to 6,983 Mbps.
Show all download speeds
- 99.2% up to 7,000.0 Mbps
- 0.8% up to 5,000.0 Mbps
Frontier Communications fiber upload speeds
In San Dimas download speeds tend to be equal to than upload speeds for Frontier fiber. Compared to other ISPs, Frontier is the fastest where upload speeds are concerned, and the fastest compared to other San Dimas fiber providers. Frontier offers 2 different upload speeds across the city, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in San Dimas is up to 7,000 Mbps. Some customers have slower plan choices, which only go up to 5,000 Mbps. On average, Frontier customers can get speeds up to 6,983 Mbps.
Show all upload speeds
- 99.2% up to 7,000.0 Mbps
- 0.8% up to 5,000.0 Mbps
Frontier Communications DSL in San Dimas, CA
Frontier DSL coverage
About 4.88%, or 1,843 people, have Frontier DSL internet available to them in the city. The company covers the south, southwest, and west San Dimas area. Frontier is one of the largest internet service providers internet service providers in the US, with internet service available in a very small piece of San Dimas.
Frontier Communications DSL download speeds
Frontier is the slowest when comparing download speeds to all other internet providers in San Dimas. Versus other DSL providers in the area, Frontier DSL is the slowest. There are no different maximum speeds throughout San Dimas. The fastest plan anyone in San Dimas can order from Frontier goes up to 10 Mbps, and all San Dimas customers can get this speed.
Show all download speeds
- 100.0% up to 10.0 Mbps
Frontier Communications DSL upload speeds
In San Dimas download speeds tend to be faster than than upload speeds for Frontier DSL. Compared to other ISPs, Frontier is the slowest where upload speeds are concerned, and the slowest compared to other San Dimas DSL providers. Frontier offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in San Dimas is up to 1.0 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 1.0 Mbps
AT&T DSL in San Dimas, CA
AT&T DSL coverage
About 1.45%, or 549 people, have AT&T DSL internet available to them in the city. The company covers the northeast, north, and central San Dimas area. AT&T is one of the largest internet service providers internet service providers in the US, with internet service available in a very small piece of San Dimas.
AT&T DSL download speeds
AT&T is below average when comparing download speeds to all other internet providers in San Dimas. Versus other DSL providers in the area, AT&T DSL is one of the fastest. There are 2 different maximum speeds throughout San Dimas. The fastest plan anyone in San Dimas can order from AT&T goes up to 50 Mbps, the slowest package only goes up to 25 Mbps, and the city-wide average maximum speed for San Dimas customers is up to 34 Mbps.
Show all download speeds
- 34.8% up to 50.0 Mbps
- 65.2% up to 25.0 Mbps
AT&T DSL upload speeds
In San Dimas download speeds tend to be faster than than upload speeds for AT&T DSL. Compared to other ISPs, AT&T is below average where upload speeds are concerned, and one of the fastest compared to other San Dimas DSL providers. AT&T offers 2 different upload speeds across the city, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in San Dimas is up to 10 Mbps. Some customers have slower plan choices, which only go up to 5.0 Mbps. On average, AT&T customers can get speeds up to 6.7 Mbps.
Show all upload speeds
- 34.8% up to 10.0 Mbps
- 65.2% up to 5.0 Mbps
EarthLink DSL in San Dimas, CA
EarthLink DSL coverage
About 1.45%, or 549 people, have EarthLink DSL internet available to them in the city. The company covers the northeast, north, and central San Dimas area. EarthLink is one of the largest internet service providers internet service providers in the US, with internet service available in a very small piece of San Dimas.
EarthLink DSL download speeds
EarthLink is below average when comparing download speeds to all other internet providers in San Dimas. Versus other DSL providers in the area, EarthLink DSL is one of the fastest. There are 2 different maximum speeds throughout San Dimas. The fastest plan anyone in San Dimas can order from EarthLink goes up to 50 Mbps, the slowest package only goes up to 25 Mbps, and the city-wide average maximum speed for San Dimas customers is up to 34 Mbps.
Show all download speeds
- 34.8% up to 50.0 Mbps
- 65.2% up to 25.0 Mbps
EarthLink DSL upload speeds
In San Dimas download speeds tend to be faster than than upload speeds for EarthLink DSL. Compared to other ISPs, EarthLink is below average where upload speeds are concerned, and one of the fastest compared to other San Dimas DSL providers. EarthLink offers 2 different upload speeds across the city, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in San Dimas is up to 10 Mbps. Some customers have slower plan choices, which only go up to 5.0 Mbps. On average, EarthLink customers can get speeds up to 6.7 Mbps.
Show all upload speeds
- 34.8% up to 10.0 Mbps
- 65.2% up to 5.0 Mbps
EarthLink Fixed Wireless in San Dimas, CA
EarthLink fixed wireless coverage
About 88.59%, or 33,470 people, have EarthLink fixed wireless internet available to them in the city. The company covers the entire San Dimas area. EarthLink is one of the largest internet service providers internet service providers in the US, with internet service available in most of San Dimas.
EarthLink fixed wireless download speeds
EarthLink is below average when comparing download speeds to all other internet providers in San Dimas. Versus other fixed wireless providers in the area, EarthLink fixed wireless is one of the slowest. There are 2 different maximum speeds throughout San Dimas. The fastest plan anyone in San Dimas can order from EarthLink goes up to 100 Mbps, the slowest package only goes up to 25 Mbps, and the city-wide average maximum speed for San Dimas customers is up to 41 Mbps.
Show all download speeds
- 21.5% up to 100.0 Mbps
- 78.5% up to 25.0 Mbps
EarthLink fixed wireless upload speeds
In San Dimas download speeds tend to be faster than than upload speeds for EarthLink fixed wireless. Compared to other ISPs, EarthLink is below average where upload speeds are concerned, and one of the slowest compared to other San Dimas fixed wireless providers. EarthLink offers 2 different upload speeds across the city, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in San Dimas is up to 20 Mbps. Some customers have slower plan choices, which only go up to 3.0 Mbps. On average, EarthLink customers can get speeds up to 6.7 Mbps.
Show all upload speeds
- 21.5% up to 20.0 Mbps
- 78.5% up to 3.0 Mbps
AT&T Fixed Wireless in San Dimas, CA
AT&T fixed wireless coverage
About 88.59%, or 33,470 people, have AT&T fixed wireless internet available to them in the city. The company covers the entire San Dimas area. AT&T is one of the largest internet service providers internet service providers in the US, with internet service available in most of San Dimas.
AT&T fixed wireless download speeds
AT&T is below average when comparing download speeds to all other internet providers in San Dimas. Versus other fixed wireless providers in the area, AT&T fixed wireless is one of the slowest. There are 2 different maximum speeds throughout San Dimas. The fastest plan anyone in San Dimas can order from AT&T goes up to 100 Mbps, the slowest package only goes up to 25 Mbps, and the city-wide average maximum speed for San Dimas customers is up to 41 Mbps.
Show all download speeds
- 21.5% up to 100.0 Mbps
- 78.5% up to 25.0 Mbps
AT&T fixed wireless upload speeds
In San Dimas download speeds tend to be faster than than upload speeds for AT&T fixed wireless. Compared to other ISPs, AT&T is below average where upload speeds are concerned, and one of the slowest compared to other San Dimas fixed wireless providers. AT&T offers 2 different upload speeds across the city, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in San Dimas is up to 20 Mbps. Some customers have slower plan choices, which only go up to 3.0 Mbps. On average, AT&T customers can get speeds up to 6.7 Mbps.
Show all upload speeds
- 21.5% up to 20.0 Mbps
- 78.5% up to 3.0 Mbps
T-Mobile Home Internet Fixed Wireless in San Dimas, CA
T-Mobile Home Internet fixed wireless coverage
About 87.48%, or 33,050 people, have T-Mobile Home Internet fixed wireless internet available to them in the city. The company covers the entire San Dimas area. T-Mobile Home Internet is one of the largest internet service providers internet service providers in the US, with internet service available in most of San Dimas.
T-Mobile Home Internet fixed wireless download speeds
T-Mobile Home Internet is below average when comparing download speeds to all other internet providers in San Dimas. Versus other fixed wireless providers in the area, T-Mobile Home Internet fixed wireless is below average. There are 2 different maximum speeds throughout San Dimas. The fastest plan anyone in San Dimas can order from T-Mobile Home Internet goes up to 100 Mbps, the slowest package only goes up to 25 Mbps, and the city-wide average maximum speed for San Dimas customers is up to 86 Mbps.
Show all download speeds
- 81.3% up to 100.0 Mbps
- 18.7% up to 25.0 Mbps
T-Mobile Home Internet fixed wireless upload speeds
In San Dimas download speeds tend to be faster than than upload speeds for T-Mobile Home Internet fixed wireless. Compared to other ISPs, T-Mobile Home Internet is below average where upload speeds are concerned, and above average compared to other San Dimas fixed wireless providers. T-Mobile Home Internet offers 2 different upload speeds across the city, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in San Dimas is up to 20 Mbps. Some customers have slower plan choices, which only go up to 3.0 Mbps. On average, T-Mobile Home Internet customers can get speeds up to 17 Mbps.
Show all upload speeds
- 81.3% up to 20.0 Mbps
- 18.7% up to 3.0 Mbps
Verizon Fixed Wireless in San Dimas, CA
Verizon fixed wireless coverage
About 73.96%, or 27,940 people, have Verizon fixed wireless internet available to them in the city. The company covers the entire San Dimas area. Verizon is one of the largest internet service providers internet service providers in the US, with internet service available in much of San Dimas.
Verizon fixed wireless download speeds
Verizon is below average when comparing download speeds to all other internet providers in San Dimas. Versus other fixed wireless providers in the area, Verizon fixed wireless is the fastest. There are no different maximum speeds throughout San Dimas. The fastest plan anyone in San Dimas can order from Verizon goes up to 300 Mbps, and all San Dimas customers can get this speed.
Show all download speeds
- 100.0% up to 300.0 Mbps
Verizon fixed wireless upload speeds
In San Dimas download speeds tend to be faster than than upload speeds for Verizon fixed wireless. Compared to other ISPs, Verizon is below average where upload speeds are concerned, and the fastest compared to other San Dimas fixed wireless providers. Verizon offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in San Dimas is up to 20 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 20.0 Mbps
San Dimas Internet by Area
This information is most helpful to those looking for homes or considering moving to San Dimas or any of the areas nearby.
How does internet in San Dimas compare to the rest of California?
Internet speeds in San Dimas are much faster versus the average speeds in California: 3,631 Mbps in California versus 5,923 Mbps in the city. The state has less internet availability compared to the city. Average internet coverage in California is 98.73% versus 92.79% in San Dimas.
What zip codes have widespread internet?
Internet coverage varies by zip code and neighborhood. Some examples in or around San Dimas are shown below. You can enter any zip code here to see TV and internet providers by zip code.
What does internet service look like in other cities?
Below are cities nearby and with similar populations. This comparison can be useful if living somewhere with fast internet is important to you.
Nearby Cities
- La Verne, CA: more internet coverage, faster speeds
- Glendora, CA: more internet coverage, slower speeds
- Covina, CA: more internet coverage, faster speeds
- Citrus, CA: more internet coverage, faster speeds
- Pomona, CA: more internet coverage, faster speeds
- Azusa, CA: more internet coverage, slower speeds
- Walnut, CA: more internet coverage, slower speeds
- Claremont, CA: more internet coverage, slower speeds
- Vincent, CA: more internet coverage, faster speeds
- West Covina, CA: more internet coverage, slower speeds
Cities with Similar Populations
- Las Piedras, PR: more internet coverage, slower speeds
- Saratoga Springs, UT: more internet coverage, slower speeds
- Saratoga Springs, NY: more internet coverage, slower speeds
- Salem, VA: more internet coverage, slower speeds
- Sahuarita, AZ: more internet coverage, slower speeds
- Roy, UT: more internet coverage, slower speeds
- Manitowoc, WI: more internet coverage, slower speeds
- Lewiston, ME: more internet coverage, slower speeds
- Lauderdale Lakes, FL: more internet coverage, slower speeds
- Severn, MD: more internet coverage, slower speeds