In Martinez there are 3 residential Fiber providers covering 61.28% of the city. The average home can get speeds up to 2,845 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 Martinez, CA.
To see availability maps for all providers including fiber, cable, DSL, and more in Martinez, CA please click below.
Martinez, CA Availability Maps
Fiber Internet Service Providers in Martinez
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 Martinez are not shown.
Martinez 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 Martinez is fiber internet available?
Fiber Internet Availability Key
Fiber is available in 61.28% of Martinez. Areas in green have fiber internet service, where areas in yellow or red may not. The most widely available provider is AT&T. Call one of the companies with service in Martinez above to see who has service at your home.
How fast is fiber internet in Martinez?
The map below shows maximum fiber internet speeds by area in Martinez.
Fiber Internet Speed Key
The average Martinez home can get up to 2,845 Mbps on their fiber internet plan. The fastest fiber download speed in the city is 5,000 Mbps, which 23.59% 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 1,000 Mbps. See the internet provider details below for info about their speed and coverage in Martinez.
Fiber internet speeds tend to be faster in the south parts of Martinez, and slower in the southeast areas of the city.
Is fiber the fastest internet I can get in Martinez?
The fastest internet for you may vary based on where in Martinez you live. In general, cable competes most often with fiber in the city.
- Fiber is the fastest internet type for 26.49% of Martinez homes.
- Cable is fastest for 72.86% 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 Martinez homes.
Fiber Providers in Depth
Below you'll find which TV and internet providers offer service in Martinez, along with details on where in Martinez and at what speeds.
Astound Broadband Fiber in Martinez, CA
Astound Broadband fiber coverage
About 53.86%, or 26,699 people, have Astound Broadband fiber internet available to them in the city. The company covers the entire Martinez area. Astound Broadband is one of the largest internet service providers internet service providers in the US, with internet service available in a majority of Martinez.
Astound Broadband fiber download speeds
Astound Broadband is above average when comparing download speeds to all other internet providers in Martinez. Versus other fiber providers in the area, Astound Broadband fiber is the slowest. There are 2 different maximum speeds throughout Martinez. The fastest plan anyone in Martinez can order from Astound Broadband goes up to 5,000 Mbps, the slowest package only goes up to 1,500 Mbps, and the city-wide average maximum speed for Martinez customers is up to 1,501 Mbps.
Show all download speeds
- 0.0% up to 5,000.0 Mbps
- 100.0% up to 1,500.0 Mbps
Astound Broadband fiber upload speeds
In Martinez download speeds tend to be equal to than upload speeds for Astound Broadband fiber. Compared to other ISPs, Astound Broadband is above average where upload speeds are concerned, and the slowest compared to other Martinez fiber providers. Astound Broadband 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 Martinez is up to 5,000 Mbps. Some customers have slower plan choices, which only go up to 1,500 Mbps. On average, Astound Broadband customers can get speeds up to 1,501 Mbps.
Show all upload speeds
- 0.0% up to 5,000.0 Mbps
- 100.0% up to 1,500.0 Mbps
EarthLink Fiber in Martinez, CA
EarthLink fiber coverage
About 28.00%, or 13,879 people, have EarthLink fiber internet available to them in the city. The company covers the entire Martinez area. EarthLink is one of the largest internet service providers internet service providers in the US, with internet service available in a small portion of Martinez.
EarthLink fiber download speeds
EarthLink is one of the fastest when comparing download speeds to all other internet providers in Martinez. Versus other fiber providers in the area, EarthLink fiber is one of the fastest. There are 2 different maximum speeds throughout Martinez. The fastest plan anyone in Martinez 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 Martinez customers is up to 4,369 Mbps.
Show all download speeds
- 84.2% up to 5,000.0 Mbps
- 15.8% up to 1,000.0 Mbps
EarthLink fiber upload speeds
In Martinez download speeds tend to be equal to than upload speeds for EarthLink fiber. Compared to other ISPs, EarthLink is one of the fastest where upload speeds are concerned, and one of the fastest compared to other Martinez 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 Martinez 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 4,369 Mbps.
Show all upload speeds
- 84.2% up to 5,000.0 Mbps
- 15.8% up to 1,000.0 Mbps
AT&T Fiber in Martinez, CA
AT&T fiber coverage
About 28.00%, or 13,879 people, have AT&T fiber internet available to them in the city. The company covers the entire Martinez area. AT&T is one of the largest internet service providers internet service providers in the US, with internet service available in a small portion of Martinez.
AT&T fiber download speeds
AT&T is one of the fastest when comparing download speeds to all other internet providers in Martinez. Versus other fiber providers in the area, AT&T fiber is one of the fastest. There are 2 different maximum speeds throughout Martinez. The fastest plan anyone in Martinez 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 Martinez customers is up to 4,369 Mbps.
Show all download speeds
- 84.2% up to 5,000.0 Mbps
- 15.8% up to 1,000.0 Mbps
AT&T fiber upload speeds
In Martinez download speeds tend to be equal to than upload speeds for AT&T fiber. Compared to other ISPs, AT&T is one of the fastest where upload speeds are concerned, and one of the fastest compared to other Martinez 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 Martinez 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 4,369 Mbps.
Show all upload speeds
- 84.2% up to 5,000.0 Mbps
- 15.8% up to 1,000.0 Mbps
Martinez Fiber by Area
This information is most helpful to those looking for homes or considering moving to Martinez or any of the areas nearby.
How does fiber internet in Martinez compare to the rest of California?
Fiber internet speeds in Martinez are much faster versus the average speeds in California: 0.00 Mbps in California versus 2,845 Mbps in the city. The state has similar fiber availability compared to the city. Average fiber coverage in California is 0.00% versus 61.28% in Martinez.
What zip codes have fiber internet?
Fiber internet coverage varies by zip code and neighborhood. Some examples in or around Martinez 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
- Pleasant Hill, CA: less fiber coverage, faster speeds
- Concord, CA: less fiber coverage, faster speeds
- Benicia, CA: less fiber coverage, faster speeds
- Lafayette, CA: less fiber coverage, faster speeds
- Walnut Creek, CA: less fiber coverage, faster speeds
- Crockett, CA: more fiber coverage, faster speeds
- Bay Point, CA: less fiber coverage, faster speeds
- Castle Hill, CA: less fiber coverage, faster speeds
- Hercules, CA: less fiber coverage, faster speeds
- Rodeo, CA: less fiber coverage, faster speeds
Cities with Similar Populations
- Bloomfield Hills, MI: less fiber coverage, faster speeds
- Carlisle, PA: more fiber coverage, faster speeds
- Cedar Hill, TX: more fiber coverage, faster speeds
- Cerritos, CA: more fiber coverage, faster speeds
- Chester, VA: more fiber coverage, slower speeds
- Chesterfield, MO: more fiber coverage, faster speeds
- Coatesville, PA: more fiber coverage, slower speeds
- Converse, TX: more fiber coverage, faster speeds
- Country Club, FL: more fiber coverage, faster speeds
- Salina, KS: more fiber coverage, faster speeds