In Alum Rock there are 3 residential Fiber providers covering 99.91% of the city. The average home can get speeds up to 9,104 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 Fiber internet providers in Alum Rock, CA.
To see availability maps for all providers including fiber, cable, DSL, and more in Alum Rock, CA please click below.
Alum Rock, CA Availability Maps
Fiber Internet Service Providers in Alum Rock
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 Alum Rock are not shown.
Alum Rock 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 Alum Rock is fiber internet available?
Fiber Internet Availability Key
Fiber is available in 99.91% of Alum Rock. Areas in green have fiber internet service, where areas in yellow or red may not. The most widely available provider is Sonic. Call one of the companies with service in Alum Rock above to see who has service at your home.
How fast is fiber internet in Alum Rock?
The map below shows maximum fiber internet speeds by area in Alum Rock.
Fiber Internet Speed Key
The average Alum Rock home can get up to 9,104 Mbps on their fiber internet plan. The fastest fiber download speed in the city is 10,000 Mbps, which 82.01% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, 17.90% of homes can only purchase plans up to 5,000 Mbps. See the internet provider details below for info about their speed and coverage in Alum Rock.
Fiber internet speeds tend to be faster in the central parts of Alum Rock, and slower in the southeast areas of the city.
Is fiber the fastest internet I can get in Alum Rock?
The fastest internet for you may vary based on where in Alum Rock you live. In general, cable competes most often with fiber in the city.
- Fiber is the fastest internet type for 99.91% of Alum Rock homes.
- Cable is fastest for less than 1% 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 less than 1% of Alum Rock homes.
Fiber Providers in Depth
Below you'll find which TV and internet providers offer service in Alum Rock, along with details on where in Alum Rock and at what speeds.
EarthLink Fiber in Alum Rock, CA
EarthLink fiber coverage
About 99.56%, or 20,613 people, have EarthLink fiber internet available to them in the city. The company covers the entire Alum Rock area. EarthLink is one of the largest internet service providers internet service providers in the US, with internet service available in most of Alum Rock.
EarthLink fiber download speeds
EarthLink is above average when comparing download speeds to all other internet providers in Alum Rock. Versus other fiber providers in the area, EarthLink fiber is one of the slowest. There are 2 different maximum speeds throughout Alum Rock. The fastest plan anyone in Alum Rock can order from EarthLink goes up to 5,000 Mbps, the slowest package only goes up to 1,000 Mbps, and the city-wide average maximum speed for Alum Rock customers is up to 4,849 Mbps.
Show all download speeds
- 96.2% up to 5,000.0 Mbps
- 3.8% up to 1,000.0 Mbps
EarthLink fiber upload speeds
In Alum Rock download speeds tend to be equal to than upload speeds for EarthLink fiber. Compared to other ISPs, EarthLink is above average where upload speeds are concerned, and one of the slowest compared to other Alum Rock fiber 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 Alum Rock is up to 5,000 Mbps. Some customers have slower plan choices, which only go up to 1,000 Mbps. On average, EarthLink customers can get speeds up to 4,849 Mbps.
Show all upload speeds
- 96.2% up to 5,000.0 Mbps
- 3.8% up to 1,000.0 Mbps
AT&T Fiber in Alum Rock, CA
AT&T fiber coverage
About 99.56%, or 20,613 people, have AT&T fiber internet available to them in the city. The company covers the entire Alum Rock area. AT&T is one of the largest internet service providers internet service providers in the US, with internet service available in most of Alum Rock.
AT&T fiber download speeds
AT&T is above average when comparing download speeds to all other internet providers in Alum Rock. Versus other fiber providers in the area, AT&T fiber is one of the slowest. There are 2 different maximum speeds throughout Alum Rock. The fastest plan anyone in Alum Rock can order from AT&T goes up to 5,000 Mbps, the slowest package only goes up to 1,000 Mbps, and the city-wide average maximum speed for Alum Rock customers is up to 4,849 Mbps.
Show all download speeds
- 96.2% up to 5,000.0 Mbps
- 3.8% up to 1,000.0 Mbps
AT&T fiber upload speeds
In Alum Rock download speeds tend to be equal to than upload speeds for AT&T fiber. Compared to other ISPs, AT&T is above average where upload speeds are concerned, and one of the slowest compared to other Alum Rock fiber 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 Alum Rock is up to 5,000 Mbps. Some customers have slower plan choices, which only go up to 1,000 Mbps. On average, AT&T customers can get speeds up to 4,849 Mbps.
Show all upload speeds
- 96.2% up to 5,000.0 Mbps
- 3.8% up to 1,000.0 Mbps
Sonic Fiber in Alum Rock, CA
Sonic fiber coverage
About 82.01%, or 16,979 people, have Sonic fiber internet available to them in the city. The company covers the entire Alum Rock area. Sonic is a large internet service provider internet service providers in the US, with internet service available in much of Alum Rock.
Sonic fiber download speeds
Sonic is the fastest when comparing download speeds to all other internet providers in Alum Rock. Versus other fiber providers in the area, Sonic fiber is the fastest. There are no different maximum speeds throughout Alum Rock. The fastest plan anyone in Alum Rock can order from Sonic goes up to 10,000 Mbps, and all Alum Rock customers can get this speed.
Show all download speeds
- 100.0% up to 10,000.0 Mbps
Sonic fiber upload speeds
In Alum Rock download speeds tend to be equal to than upload speeds for Sonic fiber. Compared to other ISPs, Sonic is the fastest where upload speeds are concerned, and the fastest compared to other Alum Rock fiber providers. Sonic offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Alum Rock is up to 10,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 10,000.0 Mbps
Alum Rock Fiber by Area
This information is most helpful to those looking for homes or considering moving to Alum Rock or any of the areas nearby.
How does fiber internet in Alum Rock compare to the rest of California?
Fiber internet speeds in Alum Rock are much faster versus the average speeds in California: 0.00 Mbps in California versus 9,104 Mbps in the city. The state has similar fiber availability compared to the city. Average fiber coverage in California is 0.00% versus 99.91% in Alum Rock.
What zip codes have fiber internet?
Fiber internet coverage varies by zip code and neighborhood. Some examples in or around Alum Rock are shown below. You can enter any zip code here to see TV and internet providers by zip code.
What does fiber internet 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
- Mount Hamilton, CA: less fiber coverage, faster speeds
- San Jose, CA: less fiber coverage, slower speeds
- Milpitas, CA: less fiber coverage, slower speeds
- Santa Clara, CA: less fiber coverage, slower speeds
- Alviso, CA: less fiber coverage, slower speeds
- Campbell, CA: less fiber coverage, slower speeds
- Sunnyvale, CA: less fiber coverage, slower speeds
- Cupertino, CA: less fiber coverage, slower speeds
- Monte Sereno, CA: less fiber coverage, slower speeds
- Saratoga, CA: less fiber coverage, slower speeds
Cities with Similar Populations
- Westwood, NJ: less fiber coverage, slower speeds
- Brigham City, UT: less fiber coverage, faster speeds
- Broomall, PA: less fiber coverage, slower speeds
- Greenfield, CA: less fiber coverage, slower speeds
- Riverton, NJ: less fiber coverage, slower speeds
- Grand Island, NY: less fiber coverage, slower speeds
- Rocky River, OH: less fiber coverage, slower speeds
- North Myrtle Beach, SC: less fiber coverage, slower speeds
- Camden, SC: less fiber coverage, slower speeds
- St. Joseph, MI: less fiber coverage, slower speeds