In Black Diamond there are 3 residential Fiber providers covering 15.02% of the city. The average home can get speeds up to 1,766 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 Black Diamond, WA.
To see availability maps for all providers including fiber, cable, DSL, and more in Black Diamond, WA please click below.
Black Diamond, WA Availability Maps
Fiber Internet Service Providers in Black Diamond
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 Black Diamond are not shown.
Black Diamond 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 Black Diamond is fiber internet available?
Fiber Internet Availability Key
Fiber is available in 15.02% of Black Diamond. Areas in green have fiber internet service, where areas in yellow or red may not. The most widely available provider is Astound Broadband. Call one of the companies with service in Black Diamond above to see who has service at your home.
How fast is fiber internet in Black Diamond?
The map below shows maximum fiber internet speeds by area in Black Diamond.
Fiber Internet Speed Key
The average Black Diamond home can get up to 1,766 Mbps on their fiber internet plan. The fastest fiber download speed in the city is 2,000 Mbps, which 11.55% 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 940 Mbps. See the internet provider details below for info about their speed and coverage in Black Diamond.
Fiber internet speeds tend to be faster in the southwest parts of Black Diamond, and slower in the southeast areas of the city.
Is fiber the fastest internet I can get in Black Diamond?
The fastest internet for you may vary based on where in Black Diamond you live. In general, cable competes most often with fiber in the city.
- Fiber is the fastest internet type for 11.55% of Black Diamond homes.
- Cable is fastest for 81.43% of the city.
- DSL is fastest for less than 1%.
- Fixed wireless is fastest for 6.65%.
- Satellite internet may be the only option for less than 1% of Black Diamond homes.
Fiber Providers in Depth
Below you'll find which TV and internet providers offer service in Black Diamond, along with details on where in Black Diamond and at what speeds.
Astound Broadband Fiber in Black Diamond, WA
Astound Broadband fiber coverage
About 11.55%, or 615 people, have Astound Broadband fiber internet available to them in the city. The company covers the southwest, west, south, and central Black Diamond area. Astound Broadband is one of the largest internet service providers internet service providers in the US, with internet service available in a very small piece of Black Diamond.
Astound Broadband fiber download speeds
Astound Broadband is the fastest when comparing download speeds to all other internet providers in Black Diamond. Versus other fiber providers in the area, Astound Broadband fiber is the fastest. There are no different maximum speeds throughout Black Diamond. The fastest plan anyone in Black Diamond can order from Astound Broadband goes up to 2,000 Mbps, and all Black Diamond customers can get this speed.
Show all download speeds
- 100.0% up to 2,000.0 Mbps
Astound Broadband fiber upload speeds
In Black Diamond download speeds tend to be equal to than upload speeds for Astound Broadband fiber. Compared to other ISPs, Astound Broadband is the fastest where upload speeds are concerned, and the fastest compared to other Black Diamond fiber providers. Astound Broadband offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Black Diamond is up to 2,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 2,000.0 Mbps
Quantum Fiber Fiber in Black Diamond, WA
Quantum Fiber fiber coverage
About 4.54%, or 242 people, have Quantum Fiber fiber internet available to them in the city. The company covers the southwest, southeast, and central Black Diamond area. Quantum Fiber is one of the largest internet service providers internet service providers in the US, with internet service available in a very small piece of Black Diamond.
Quantum Fiber fiber download speeds
Quantum Fiber is above average when comparing download speeds to all other internet providers in Black Diamond. Versus other fiber providers in the area, Quantum Fiber fiber is below average. There are 3 different maximum speeds throughout Black Diamond. The fastest plan anyone in Black Diamond can order from Quantum Fiber goes up to 2,000 Mbps, the slowest package only goes up to 940 Mbps, and the city-wide average maximum speed for Black Diamond customers is up to 1,128 Mbps.
Show all download speeds
- 13.6% up to 2,000.0 Mbps
- 71.9% up to 1,000.0 Mbps
- 14.5% up to 940.0 Mbps
Quantum Fiber fiber upload speeds
In Black Diamond download speeds tend to be faster than than upload speeds for Quantum Fiber fiber. Compared to other ISPs, Quantum Fiber is above average where upload speeds are concerned, and the slowest compared to other Black Diamond fiber providers. Quantum Fiber 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 Black Diamond is up to 1,000 Mbps. Some customers have slower plan choices, which only go up to 940 Mbps. On average, Quantum Fiber customers can get speeds up to 991 Mbps.
Show all upload speeds
- 85.5% up to 1,000.0 Mbps
- 14.5% up to 940.0 Mbps
Centurylink Fiber in Black Diamond, WA
Centurylink fiber coverage
About 3.23%, or 172 people, have Centurylink fiber internet available to them in the city. The company covers the northwest and central Black Diamond area. Centurylink is one of the largest internet service providers internet service providers in the US, with internet service available in a very small piece of Black Diamond.
Centurylink fiber download speeds
Centurylink is above average when comparing download speeds to all other internet providers in Black Diamond. Versus other fiber providers in the area, Centurylink fiber is the slowest. There are no different maximum speeds throughout Black Diamond. The fastest plan anyone in Black Diamond can order from Centurylink goes up to 1,000 Mbps, and all Black Diamond customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
Centurylink fiber upload speeds
In Black Diamond download speeds tend to be equal to than upload speeds for Centurylink fiber. Compared to other ISPs, Centurylink is above average where upload speeds are concerned, and below average compared to other Black Diamond fiber providers. Centurylink offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Black Diamond is up to 1,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 1,000.0 Mbps
Black Diamond Fiber by Area
This information is most helpful to those looking for homes or considering moving to Black Diamond or any of the areas nearby.
How does fiber internet in Black Diamond compare to the rest of Washington?
Fiber internet speeds in Black Diamond are much faster versus the average speeds in Washington: 0.00 Mbps in Washington versus 1,766 Mbps in the city. The state has similar fiber availability compared to the city. Average fiber coverage in Washington is 0.00% versus 15.02% in Black Diamond.
What zip codes have fiber internet?
Fiber internet coverage varies by zip code and neighborhood. Some examples in or around Black Diamond 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
- Kummer, WA: more fiber coverage, faster speeds
- Maple Valley, WA: less fiber coverage, slower speeds
- Lake Morton-Berrydale, WA: less fiber coverage, faster speeds
- Ravensdale, WA: more fiber coverage, faster speeds
- Covington, WA: less fiber coverage, slower speeds
- Hobart, WA: less fiber coverage, faster speeds
- Enumclaw, WA: less fiber coverage, faster speeds
- Auburn, WA: more fiber coverage, faster speeds
- Lake Tapps, WA: less fiber coverage, slower speeds
- East Hill-Meridian, WA: more fiber coverage, slower speeds
Cities with Similar Populations
- Evans City, PA: more fiber coverage, slower speeds
- Enfield, NC: more fiber coverage, faster speeds
- Englewood Cliffs, NJ: more fiber coverage, faster speeds
- Sisseton, SD: more fiber coverage, slower speeds
- Lexington, MO: more fiber coverage, faster speeds
- Onalaska, TX: more fiber coverage, slower speeds
- Leslie, MI: more fiber coverage, faster speeds
- Orange Grove, TX: more fiber coverage, faster speeds
- Simpsonville, KY: more fiber coverage, faster speeds
- Oregon, IL: more fiber coverage, faster speeds