In Contra Costa County there are 3 residential Fiber providers covering 38.77% of the county. The average home can get speeds up to 1,094 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.
Fiber Internet Service Providers in Contra Costa County
To avoid wasting your time, providers with less than 1% coverage in Contra Costa County are not shown.
Contra Costa County 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.
HughesNet Satellite Internet
Where in Contra Costa County is fiber internet available?
Fiber Internet Availability Key
Fiber is available in 38.77% of Contra Costa County. 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 Contra Costa County above to see who has service at your home.
How fast is fiber internet in Contra Costa County?
The map below shows maximum fiber internet speeds by area in Contra Costa County.
Fiber Internet Speed Key
The average Contra Costa County home can get up to 1,094 Mbps on their fiber internet plan. The fastest fiber download speed in the county is 2,000 Mbps, which 3.67% 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 75 Mbps. See the internet provider details below for info about their speed and coverage in Contra Costa County.
Fiber internet speeds tend to be faster in the east parts of Contra Costa County, and slower in the south areas of the county.
Is fiber the fastest internet I can get in Contra Costa County?
The fastest internet for you may vary based on where in Contra Costa County you live. In general, cable competes most often with fiber in the county.
- Fiber is the fastest internet type for 38.73% of Contra Costa County homes.
- Cable is fastest for 59.82% of the county.
- DSL is fastest for less than 1%.
- Fixed wireless is fastest for 1.05%.
- Satellite internet may be the only option for less than 1% of Contra Costa County homes.
Fiber Providers in Depth
Below you'll find which TV and internet providers offer service in Contra Costa County, along with details on where in Contra Costa County and at what speeds.
AT&T Fiber in Contra Costa County, CA
AT&T fiber coverage
About 31.35%, or 328,911 people, have AT&T fiber internet available to them in the county. The company covers the entire Contra Costa County 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 Contra Costa County.
AT&T fiber download speeds
AT&T is above average when comparing download speeds to all other internet providers in Contra Costa County. Versus other fiber providers in the area, AT&T fiber is the slowest. There are 3 different maximum speeds throughout Contra Costa County. The fastest plan anyone in Contra Costa County can order from AT&T goes up to 1,000 Mbps, the slowest package only goes up to 75 Mbps, and the county-wide average maximum speed for Contra Costa County customers is up to 999 Mbps.
Show all download speeds
- 99.9% up to 1,000.0 Mbps
- 0.0% up to 500.0 Mbps
- 0.1% up to 75.0 Mbps
AT&T fiber upload speeds
In Contra Costa County download speeds tend to be than upload speeds for AT&T fiber. Compared to other ISPs, AT&T is above average where upload speeds are concerned, and the slowest compared to other Contra Costa County fiber providers. AT&T offers 3 different upload speeds across the county, so your internet plan's upload speed may vary by neighborhood. The fastest upload speed available to anyone from this ISP in Contra Costa County is up to 1,000 Mbps. Some customers have slower plan choices, which only go up to 8.0 Mbps. On average, AT&T customers can get speeds up to 999 Mbps.
Show all upload speeds
- 99.9% up to 1,000.0 Mbps
- 0.0% up to 100.0 Mbps
- 0.1% up to 8.0 Mbps
Astound Broadband powered by Wave Broadband Fiber in Contra Costa County, CA
Astound Broadband fiber coverage
About 6.91%, or 72,475 people, have Astound Broadband fiber internet available to them in the county. The company covers the central, south, north, northwest, and east Contra Costa County area. Astound Broadband is a large internet service provider internet service providers in the US, with internet service available in a very small piece of Contra Costa County.
Astound Broadband powered by Wave Broadband fiber download speeds
Astound Broadband is above average when comparing download speeds to all other internet providers in Contra Costa County. Versus other fiber providers in the area, Astound Broadband fiber is below average. There are no different maximum speeds throughout Contra Costa County. The fastest plan anyone in Contra Costa County can order from Astound Broadband goes up to 1,000 Mbps, and all Contra Costa County customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
Astound Broadband powered by Wave Broadband fiber upload speeds
In Contra Costa County download speeds tend to be than upload speeds for Astound Broadband fiber. Compared to other ISPs, Astound Broadband is one of the fastest where upload speeds are concerned, and one of the fastest compared to other Contra Costa County fiber providers. Astound Broadband offers no different upload speeds across the county. The fastest upload speed available to anyone from this ISP in Contra Costa County is up to 1,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 1,000.0 Mbps
sonic Fiber in Contra Costa County, CA
sonic fiber coverage
About 3.67%, or 38,551 people, have sonic fiber internet available to them in the county. The company covers the east, southeast, and southwest Contra Costa County area. sonic is a large internet service provider internet service providers in the US, with internet service available in a very small piece of Contra Costa County.
sonic fiber download speeds
sonic is the fastest when comparing download speeds to all other internet providers in Contra Costa County. Versus other fiber providers in the area, sonic fiber is the fastest. There are no different maximum speeds throughout Contra Costa County. The fastest plan anyone in Contra Costa County can order from sonic goes up to 2,000 Mbps, and all Contra Costa County customers can get this speed.
Show all download speeds
- 100.0% up to 2,000.0 Mbps
sonic fiber upload speeds
In Contra Costa County download speeds tend to be than upload speeds for sonic fiber. Compared to other ISPs, sonic is one of the fastest where upload speeds are concerned, and one of the fastest compared to other Contra Costa County fiber providers. sonic offers no different upload speeds across the county. The fastest upload speed available to anyone from this ISP in Contra Costa County is up to 1,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 1,000.0 Mbps
Contra Costa County Fiber by Area
This information is most helpful to those looking for homes or considering moving to Contra Costa County or any of the areas nearby.
How does fiber internet in Contra Costa County compare to the rest of California?
Fiber internet speeds in Contra Costa County are comparable versus the average speeds in California: 955 Mbps in California versus 1,094 Mbps in the county. The state has far less fiber availability compared to the county. Average fiber coverage in California is 95.44% versus 38.77% in Contra Costa County.
What zip codes have fiber internet?
Fiber internet coverage varies by zip code and neighborhood. Some examples in or around Contra Costa County 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 counties?
Below are counties nearby and with similar populations. This comparison can be useful if living somewhere with fast internet is important to you.
Nearby Counties
- Alameda County, CA: more fiber coverage, faster speeds
- Solano County, CA: less fiber coverage, slower speeds
- San Francisco County, CA: more fiber coverage, faster speeds
- Marin County, CA: less fiber coverage, slower speeds
- San Mateo County, CA: more fiber coverage, faster speeds
- Napa County, CA: less fiber coverage, slower speeds
- San Joaquin County, CA: less fiber coverage, slower speeds
- Santa Clara County, CA: less fiber coverage, slower speeds
- Yolo County, CA: less fiber coverage, slower speeds
- Sonoma County, CA: less fiber coverage, faster speeds
Counties with Similar Populations
- Salt Lake County, UT: more fiber coverage, faster speeds
- Fairfax County, VA: more fiber coverage, slower speeds
- Travis County, TX: more fiber coverage, slower speeds
- Montgomery County, MD: more fiber coverage, slower speeds
- Hennepin County, MN: more fiber coverage, faster speeds
- Allegheny County, PA: more fiber coverage, slower speeds
- Mecklenburg County, NC: more fiber coverage, slower speeds
- Franklin County, OH: less fiber coverage, slower speeds
- St. Louis County, MO: more fiber coverage, slower speeds
- Wake County, NC: more fiber coverage, slower speeds