6 Best Internet Providers in San Dimas, CA
Find internet availability by address in San Dimas, CA
Jump to: Best Internet Provider | Availability Maps | Customer Reviews | San Dimas ISP Report Card | Business Internet in San Dimas
| San Dimas ISP Report Card | B | |
| Download Speed for Most Households | 5,923 Mbps | |
| Number of Internet Service Providers | 6 | |
| Real San Dimas Customer Ratings | 4 |
This page reflects the most recent FCC update from January 06, 2026, based on the Broadband Data Collection as of June 30, 2025.
This page reflects the most recent FCC update from January 06, 2026, based on the Broadband Data Collection as of June 30, 2025.
San Dimas has 6 internet service providers, they are sorted by coverage, available speed, and customer rating from our unbiased internet provider report. Fiber, Cable, Fixed Wireless, and DSL internet are available in the city. Reviews are grouped by provider and the type of service they offer, covering all 4 available internet technologies in San Dimas.
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San Dimas has 6 internet service providers, they are sorted by coverage, available speed, and customer rating from our unbiased internet provider report. Fiber, Cable, Fixed Wireless, and DSL internet are available in the city. Reviews are grouped by provider and the type of service they offer, covering all 4 available internet technologies in San Dimas.
Compare Providers Ranked by Coverage, Speed, and Customer Ratings
Spectrum
Connection
Customer Rating
Cable
Frontier
Connection
Customer Rating
Fiber
DSL
EarthLink
Connection
Customer Rating
DSL
Fixed Wireless
AT&T
Connection
Customer Rating
DSL
Fixed Wireless
Above are the top 4 providers in San Dimas, CA for most people based on high speed internet coverage, speeds, and customer reviews. Click below to see all providers in your city.
Speed and technology may vary by address for all providers. Please note we may have a financial relationship with some of the providers above, which does not impact the customer ratings displayed. Customer ratings listed above are national ratings, local San Dimas ratings may vary and are shown below.
Who is the Best Internet Provider in San Dimas, CA?
Spectrum is the best internet provider in San Dimas based on California customer satisfaction ratings and reviews. Based on our extensive and unbiased survey, Spectrum had the best reviews at the local, state, and national levels versus all available providers in San Dimas, making it a solid recommendation among providers with reviews. Spectrum is an option for 92.60% of the city.
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The chart and table below show average customer ratings from customers in San Dimas, California, and customers throughout the country.
Top Rated Internet Providers in San Dimas
Local, State, and National Ratings for all San Dimas Internet Providers
| ISP / Tech Type | San Dimas Overall | California Overall | National Overall | For Service | ||
|---|---|---|---|---|---|---|
| Frontier | (1) | (42) | (143) | View Plans | ||
| Spectrum | (3) | (203) | (1738) | View Plans | ||
| T-Mobile Home Internet | (0) | (22) | (284) | View Plans | ||
| Verizon | (0) | (24) | (723) | View Plans | ||
| AT&T | (0) | (107) | (924) | View Plans | ||
| HughesNet | (0) | (1) | (18) | View Plans | ||
| Viasat | (0) | (1) | (11) | View Plans | ||
| EarthLink | (0) | (2) | (12) | View Plans |
Based on 402 reviews from California internet customers, Spectrum is the best internet service provider for San Dimas residents. Spectrum was rated at an average of 3.25 out of 5 in our report for overall customer satisfaction. Frontier Communications wins for second-place in California, with 4.00 out of 5 stars and 78.1% coverage in San Dimas.
At a national level, based on 3853 national reviews for any of the providers listed above, T-Mobile Home Internet is rated higher than any other provider, with a rating of 4.04 out of 5.
Which Providers are Available at my Home in San Dimas?
a different provider.

Internet Availability Key
Speeds and coverage vary within the city, and sometimes even from block to block. The map shows speeds per provider and where each provider is available.
Who is the Fastest Internet Provider in San Dimas?
According to unbiased feedback from real internet customers in the city, they reported being happiest with speeds provided by Spectrum. On the other hand, based on data provided by the internet providers to the FCC, Frontier Communications should have faster speeds at a local level. While we typically put more weight on real-world customer ratings, we display both satisfaction and technical maximum information for customers to decide for themselves.
Data Reported to FCC by ISPs: Average Maximum Available in San Dimas
| ISP / Tech Type | Max Advertised Speed | ||
|---|---|---|---|
| Frontier Communications | 7,000 Mbps | ||
| EarthLink | 5,000 Mbps | ||
| AT&T | 5,000 Mbps | ||
| Spectrum | 1,000 Mbps | ||
| Verizon | 300 Mbps | ||
| T-Mobile Home Internet | 100 Mbps | ||
| Viasat | 100 Mbps | ||
| HughesNet | 25 Mbps |
Customer Ratings for Internet Provider Speeds in San Dimas
| ISP / Tech Type | San Dimas Speed | California Speed | National Speed | For Service | ||
|---|---|---|---|---|---|---|
| Spectrum | (3) | (203) | (1738) | View Plans | ||
| Frontier | (1) | (42) | (143) | View Plans | ||
| Verizon | (0) | (24) | (723) | View Plans | ||
| T-Mobile Home Internet | (0) | (22) | (284) | View Plans | ||
| AT&T | (0) | (107) | (924) | View Plans | ||
| HughesNet | (0) | (1) | (18) | View Plans | ||
| Viasat | (0) | (1) | (11) | View Plans | ||
| EarthLink | (0) | (2) | (12) | View Plans |
Based on data reported by San Dimas ISPs to the FCC, the fastest speeds in the city are available through Frontier Communications. The company offers speeds up to 7,000 Mbps in San Dimas. Therefore, the average customer can get up to 6,832 Mbps if they're willing to purchase the fastest subscription tier available at their homes.
Additionally, actual customers in the city rated their satisfaction with internet speed highest with Spectrum. This indicates Spectrum reliably delivers speeds expected by the customer based on the plan they are paying for.
Who is the Cheapest Internet Provider in San Dimas?
California customers rate Spectrum as the cheapest internet service provider in state. Data comes from customers in the state rating their satisfaction with pricing. This feedback is valuable because it considers price changes and whether the speeds paid for are worth it.
Spectrum received a local rating of 3.33 out of 5, which is much lower than the average across all internet providers in the country. Frontier Communications is rated in second place for affordability by the company’s San Dimas customers with an average price rating of 3.00 out of 5.
The chart and graph below show how customers in San Dimas, California, and the United States rated the affordability of their internet service.
Rated Affordability in San Dimas
| ISP / Tech Type | San Dimas Affordability | California Affordability | National Affordability | For Service | ||
|---|---|---|---|---|---|---|
| Spectrum | (3) | (203) | (1738) | View Plans | ||
| Frontier | (1) | (42) | (143) | View Plans | ||
| T-Mobile Home Internet | (0) | (22) | (284) | View Plans | ||
| Verizon | (0) | (24) | (723) | View Plans | ||
| AT&T | (0) | (107) | (924) | View Plans | ||
| HughesNet | (0) | (1) | (18) | View Plans | ||
| Viasat | (0) | (1) | (11) | View Plans | ||
| EarthLink | (0) | (2) | (12) | View Plans |
San Dimas Internet Health Assessment
ISP Reports evaluates the technological infrastructure across the United States. This includes assessing a grade for ISP providers and infrastructure in the city and setting an index number for the digital connectivity of its residents. You can view the ISP Report Card and the Digital Connectivity Index for San Dimas below, including the metrics used and how San Dimas compares to the rest of California and nation.
| Metric
(hover for details)
|
San Dimas | California | USA | ||
|---|---|---|---|---|---|
| Fiber Availability Percent The percentage of households in San Dimas that have a Fiber internet connection available to their home. | 76.38% | 56.12% | 67.25% | ||
| Average Download SpeedThe maximum download speed most households can get on average. This is measured by availability in a block group and weighted by the population in that area. | 5,923 Mbps | 3,631 Mbps | 3,293 Mbps | ||
| Provider CountThe number of providers available for most people. This is a weighted average by block rather than a total for San Dimas. | 5.6 | 7.4 | 6.8 |
| Average Household SizeA larger household size in a city indicates that there will be a greater need for bandwidth due to simultaneous usage, multiple devices, and network congestion. | 2.8 | 3.0 | 2.7 | ||
| Work From Home PercentA higher percent of the population working from home indicates bandwidth requirements being more widely needed rather than consolidated to commercial portions of the city. | 15% | 15% | 14% | ||
| Households with DevicesA higher percentage of households with computing devices in the home indicates a higher level of infrastructure needed to support those households. | 95% | 96% | 95% | ||
| Households with InternetA higher percentage of households with internet indicates a higher need for usage and connectivity in people’s daily lives. | 86% | 93% | 90% | ||
| Households with BroadbandA higher percentage of households with a broadband connection (defined as speeds above 25 Mbps) indicates heavier usage needs within these households. | 75% | 78% | 75% | ||
| Broadband Usage vs. AvailabilityThis measures what percentage of households who have a broadband connection to their home actually have an active subscription to that service. | 81% | 79% | 76% |
Our demographic data is sourced from the latest 5-year release of the American Community Survey by the US Census Bureau.
San Dimas ISP Report Card & Digital Connectivity Index
The ISP Report Card in San Dimas is B, which is much better than other cities. The local demand for broadband internet connectivity in San Dimas is high with a score of 71 / 100 in our Digital Connectivity Index. This means that internet service providers operating in San Dimas have done a good job meeting the needs of its residents.
The San Dimas ISP Report Card evaluates the city on availability and speed metrics compared to other cities in the United States. ISP Infrastructure can vary greatly and on its own isn’t a perfect measure of what a city needs. Please see our ISP Report Card along with the Digital Connectivity Index above to evaluate how well the connectivity demand is met by the existing infrastructure.
86% of San Dimas households have an internet connection despite having 92.79% availability. 75% of households have fiber, cable, or DSL, 8% have satellite, 0% are still on dial-up, and 5% of households have internet but don’t pay for a subscription because it’s subsidized by the Affordable Connectivity Program.
As you can see in the table above, while 75% of households have a broadband connection such as fiber, cable or DSL available to their home, 81% subscribe to it. A very large amount of San Dimas residents are taking advantage of the available internet infrastructure.
For more details, please visit our ISP Report Card and Digital Connectivity Index pages.
How do Neighboring Cities Compare to San Dimas?
- ISP Report Card: B
- Digital Connectivity Index: 85 / 100
- ISP Report Card: B
- Digital Connectivity Index: 81 / 100
- ISP Report Card: B+
- Digital Connectivity Index: 74 / 100
- ISP Report Card: A-
- Digital Connectivity Index: 74 / 100
- ISP Report Card: B+
- Digital Connectivity Index: 71 / 100
- ISP Report Card: B
- Digital Connectivity Index: 70 / 100
- ISP Report Card: B
- Digital Connectivity Index: 86 / 100
- ISP Report Card: B
- Digital Connectivity Index: 78 / 100
- ISP Report Card: B+
- Digital Connectivity Index: 70 / 100
How Much Speed does a San Dimas Household Need?
Higher speed is typically preferred, but that comes at a higher price. The average size of a household in San Dimas is 2.8, which is smaller than the California average of 3.0 and larger than the national average of 2.7. San Dimas's average household income is $112,111 which is higher than the California average of $108,618 and much higher than the national average of $90,606. Homes with more people living in them and with higher incomes tend to indicate more devices being used more often.
San Dimas also has 21% of its population enrolled in school between the 6th grade and college level, this is higher than the California average of 17%. Additionally, 15% of residents work from home, which is lower than the 15% of residents in California who work from home. This and other factors you can see above show us that the community of San Dimas has a very high need for internet connectivity and speeds.
Compared to the rest of the country, San Dimas households are more technology-engaged. 95% of households have some sort of computing device, 88% have desktops or laptops in the home, and 93% have smartphones. To see what speeds you are currently getting, please visit our internet speed test tool.
Which Fiber Internet Providers are Available in San Dimas?
Frontier Fiber in San Dimas, CA
Frontier Communications offers Fiber service to 76.4% of San Dimas homes. Across the city, Frontier Fiber has speeds up to 6,983 Mbps, with speeds from 5,000 Mpbs up to 7,000 Mbps depending on the address. Upload speeds are symmetrical, meaning they are exactly the same as download speeds for Frontier Fiber. Frontier Fiber is rated higher than other types of internet service available in San Dimas from Frontier in terms of customer satisfaction.
Which Cable Internet Providers are Available in San Dimas?
Spectrum Cable in San Dimas, CA
Spectrum offers Cable service to 92.6% of San Dimas homes. Across the city, Spectrum Cable is the only type of service available from the company, with speeds up to 1,000 Mbps
Which DSL Internet Providers are Available in San Dimas?
Frontier DSL in San Dimas, CA
Frontier Communications offers DSL service to 4.9% of San Dimas homes. Across the city, Frontier DSL has speeds up to 10 Mbps
EarthLink DSL in San Dimas, CA
EarthLink offers DSL service to 1.5% of San Dimas homes. Across the city, EarthLink DSL has speeds up to 34 Mbps, with speeds from 25 Mpbs up to 50 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 5.0 and as high as 10, with an average of 6.7 Mbps throughout the city. EarthLink DSL is rated the same as other types of internet service available in San Dimas from EarthLink in terms of customer satisfaction.
AT&T DSL in San Dimas, CA
AT&T offers DSL service to 1.5% of San Dimas homes. Across the city, AT&T DSL has speeds up to 34 Mbps, with speeds from 25 Mpbs up to 50 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 5.0 and as high as 10, with an average of 6.7 Mbps throughout the city. AT&T DSL is rated about the same as other types of internet service available in San Dimas from AT&T in terms of customer satisfaction.
Which Fixed Wireless and LTE Internet Providers are Available in San Dimas?
EarthLink Fixed Wireless in San Dimas, CA
EarthLink offers Fixed Wireless service to 88.6% of San Dimas homes. Across the city, EarthLink Fixed Wireless has speeds up to 41 Mbps, with speeds from 25 Mpbs up to 100 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 3.0 and as high as 20, with an average of 6.7 Mbps throughout the city.
AT&T Fixed Wireless in San Dimas, CA
AT&T offers Fixed Wireless service to 88.6% of San Dimas homes. Across the city, AT&T Fixed Wireless has speeds up to 41 Mbps, with speeds from 25 Mpbs up to 100 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 3.0 and as high as 20, with an average of 6.7 Mbps throughout the city.
T-Mobile Home Internet Fixed Wireless in San Dimas, CA
T-Mobile Home Internet offers Fixed Wireless service to 87.5% of San Dimas homes. Across the city, T-Mobile Home Internet Fixed Wireless is the only type of service available from the company, with speeds up to 86 Mbps, with speeds from 25 Mpbs up to 100 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 3.0 and as high as 20, with an average of 17 Mbps throughout the city.
Verizon Fixed Wireless in San Dimas, CA
Verizon offers Fixed Wireless service to 74.0% of San Dimas homes. Across the city, Verizon Fixed Wireless is the only type of service available from the company, with speeds up to 300 Mbps
Which ISP Should You Choose in San Dimas?
The right ISP for you depends upon your needs, but in general we can make the following suggestions:
- The best all-around internet service provider in San Dimas is Spectrum.
- The fastest internet provider should be Frontier Communications. Considering speed for the money and reliability in speeds, Spectrum may be a better choice based on real-world local customer feedback.
- The most affordable internet provider in San Dimas is Spectrum.
- Viasat, Spectrum, and HughesNet has the broadest coverage in San Dimas, and is most likely to cover your home. To find out exactly what's available at your home, please use our address search tool.
How does San Dimas compare to other cities with a similar population?
To see how San Dimas stacks up on the national level, it's useful to look at some other cities with similarly sized populations. Below you can see a list of these cities and how they compare to San Dimas's B ISP Report Card and 71 / 100 Digital Connectivity Index.
- ISP Report Card: B-
- Digital Connectivity Index: 30 / 100
- ISP Report Card: B+
- Digital Connectivity Index: 97 / 100
- ISP Report Card: C-
- Digital Connectivity Index: 72 / 100
- ISP Report Card: B+
- Digital Connectivity Index: 57 / 100
- ISP Report Card: C+
- Digital Connectivity Index: 88 / 100
- ISP Report Card: B+
- Digital Connectivity Index: 85 / 100
- ISP Report Card: B-
- Digital Connectivity Index: 46 / 100
- ISP Report Card: B+
- Digital Connectivity Index: 53 / 100
- ISP Report Card: A-
- Digital Connectivity Index: 56 / 100
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