Best Internet Providers in Black Diamond, WA
All 9 providers, ranked by coverage, speed and customer ratings
Find internet availability by address in Black Diamond, WA
Black Diamond has 9 internet service providers, they are sorted by coverage, available speed, and customer rating from our unbiased internet provider report. Fiber, Cable, DSL, and Fixed Wireless 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 Black Diamond.
Ranks compare Black Diamond with the 15,682 US towns of 1,000 to 9,999 people, the tiers of our fastest-cities rankings.
The Best Internet in Black Diamond, WA at a Glance
Black Diamond Internet Providers, Ranked by Coverage, Speed and Customer Ratings
XFINITY
Connection
Customer Rating
Cable
CenturyLink
Connection
Customer Rating
Fiber
DSL
EarthLink
Connection
Customer Rating
Fixed Wireless
T-Mobile Home Internet
Connection
Customer Rating
Fixed Wireless
Providers with less than 1% coverage in this city are excluded from the list. To see if one of these providers is available at your home, please use the address search above.
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 Black Diamond ratings may vary and are shown below.
Who is the Best Internet Provider in Black Diamond, WA?
T-Mobile Home Internet is the best internet provider in Black Diamond based on Washington customer satisfaction ratings and reviews. Based on our extensive and unbiased survey, T-Mobile Home Internet had the best reviews at the local, state, and national levels versus all available providers in Black Diamond, making it a solid recommendation among providers with reviews. T-Mobile Home Internet is an option for 96.70% of the city.
Click here to get T-Mobile Home Internet
or call 1-833-601-2935
Which Providers are Available at my Home in Black Diamond?
Coverage changes block by block. Pick a provider and a technology to see where its service reaches: the darker the area, the larger the share of homes it covers. For your exact address, use the address search above.
Coverage map for each provider in Black Diamond
- XFINITY - cable coverage map
- Astound Broadband - fiber coverage map
- Verizon - fixed wireless coverage map
- SkyNet Broadband - fixed wireless coverage map
- Quantum Fiber - fiber coverage map
- T-Mobile Home Internet - fixed wireless coverage map
- CenturyLink - dsl coverage map
- CenturyLink - fiber coverage map
- AT&T - fixed wireless coverage map
- EarthLink - fixed wireless coverage map
How Black Diamond Compares to Places Its Size
Black Diamond's report card score is in the bottom 33% and its connectivity index is in the top 2%.
| Measure | Black Diamond | Rank among US towns of 1,000 to 9,999 people | King County | Washington | US | Leader |
|---|---|---|---|---|---|---|
| ISP Report Card inputs: what providers offer here | ||||||
| Fiber availability | 19.2% | bottom 20% | 60.4% | 53.5% | 71.5% | 1,056 places at 100.0% |
| Average top speed | 1,876 Mbps | top 39% | 2,721 Mbps | 2,784 Mbps | 3,486 Mbps | Collegedale, TN and Lakesite, TN and 2 more (25,000 Mbps) |
| Providers at a typical address | 5.4 | bottom 48% | 6.5 | 6.5 | 7.1 | McLendon-Chisholm, TX (14.2) |
| Connectivity index inputs: how much households need and use the internet | ||||||
| People per household | 2.7 | top 23% | 2.5 | 2.6 | 2.7 | St. George, GA (6.2) |
| Workers who work from home | 25% | top 6% | 28% | 19% | 15% | Indian Springs, NV (76%) |
| Homes with a computer, tablet or phone | 100% | top 1% | 98% | 97% | 96% | Tied with 514 other places at 100% |
| Homes with internet | 96% | top 9% | 95% | 94% | 91% | 115 places at 100% |
| Homes on fiber, cable or DSL | 90% | top 3% | 85% | 80% | 76% | Bunkerville, NV and Fort Myer, VA and 3 more (100%) |
| More about the households here | ||||||
| Homes with a desktop or laptop | 94% | top 3% | 90% | 86% | 81% | 12 places at 100% |
| Median household income | $138,310 | top 6% | $138,460 | $109,860 | $93,246 | 16 places at $250,001 |
| Residents in school (6th grade to college) | 12% | bottom 47% | 15% | 15% | 16% | University Park, PA (95%) |
Fiber reaches 19.2% of homes in Black Diamond, against 60.4% across King County and 53.5% across Washington. Households in Black Diamond are the same size as the US average (2.7 people against 2.7); 25% of workers work from home (US 15%); and the median household income is $138,310 (US $93,246).
Our demographic data is sourced from the latest 5-year release of the American Community Survey by the US Census Bureau.
Fiber, 5G, Cable and DSL Internet in Black Diamond
Which Fiber Internet Providers are Available in Black Diamond?
Astound Broadband Fiber in Black Diamond, WA
Availability:
15.8%
Customer Rating:
(21)
Avg. Download Speed
2,000 Mbps
Astound Broadband offers Fiber service to 15.8% of Black Diamond homes. Across the city, Astound Broadband Fiber is the only type of service available from the company, with speeds up to 2,000 Mbps
Quantum Fiber in Black Diamond, WA
Availability:
4.5%
Customer Rating:
(52)
Avg. Download Speed
1,128 Mbps
Quantum Fiber offers Fiber service to 4.5% of Black Diamond homes. Across the city, Quantum Fiber is the only type of service available from the company, with speeds up to 1,128 Mbps, with speeds from 940 Mpbs up to 2,000 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 940 and as high as 1,000, with an average of 991 Mbps throughout the city.
CenturyLink Fiber in Black Diamond, WA
Availability:
3.2%
Customer Rating:
(62)
Avg. Download Speed
1,000 Mbps
CenturyLink offers Fiber service to 3.2% of Black Diamond homes. Across the city, CenturyLink Fiber has speeds up to 1,000 Mbps
Which Fixed Wireless and LTE Internet Providers are Available in Black Diamond?
T-Mobile Home Internet Fixed Wireless in Black Diamond, WA
Availability:
96.7%
Customer Rating:
(342)
Avg. Download Speed
50 Mbps
T-Mobile Home Internet offers Fixed Wireless service to 96.7% of Black Diamond homes. Across the city, T-Mobile Home Internet Fixed Wireless is the only type of service available from the company, with speeds up to 50 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 8.8 Mbps throughout the city.
Verizon Fixed Wireless in Black Diamond, WA
Availability:
92.9%
Customer Rating:
(362)
Avg. Download Speed
153 Mbps
Verizon offers Fixed Wireless service to 92.9% of Black Diamond homes. Across the city, Verizon Fixed Wireless is the only type of service available from the company, with speeds up to 153 Mbps, with speeds from 25 Mpbs up to 300 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 6.0 and as high as 20, with an average of 13 Mbps throughout the city.
SkyNet Broadband Fixed Wireless in Black Diamond, WA
Availability:
92.6%
Customer Rating:
(0)
Avg. Download Speed
100 Mbps
SkyNet Broadband offers Fixed Wireless service to 92.6% of Black Diamond homes. Across the city, SkyNet Broadband Fixed Wireless is the only type of service available from the company, with speeds up to 100 Mbps
EarthLink Fixed Wireless in Black Diamond, WA
Availability:
34.7%
Customer Rating:
(4)
Avg. Download Speed
26 Mbps
EarthLink offers Fixed Wireless service to 34.7% of Black Diamond homes. Across the city, EarthLink Fixed Wireless is the only type of service available from the company, with speeds up to 26 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 3.2 Mbps throughout the city.
AT&T Fixed Wireless in Black Diamond, WA
Availability:
34.7%
Customer Rating:
(205)
Avg. Download Speed
26 Mbps
AT&T offers Fixed Wireless service to 34.7% of Black Diamond homes. Across the city, AT&T Fixed Wireless is the only type of service available from the company, with speeds up to 26 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 3.2 Mbps throughout the city.
Which Cable Internet Providers are Available in Black Diamond?
XFINITY Cable in Black Diamond, WA
Availability:
93.0%
Customer Rating:
(2077)
Avg. Download Speed
1,962 Mbps
XFINITY from Comcast offers Cable service to 93.0% of Black Diamond homes. Across the city, XFINITY Cable is the only type of service available from the company, with speeds up to 1,962 Mbps, with speeds from 1,200 Mpbs up to 2,000 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 35 and as high as 250, with an average of 240 Mbps throughout the city.
Which DSL Internet Providers are Available in Black Diamond?
CenturyLink DSL in Black Diamond, WA
Availability:
69.9%
Customer Rating:
(120)
Avg. Download Speed
51 Mbps
CenturyLink offers DSL service to 69.9% of Black Diamond homes. Across the city, CenturyLink DSL has speeds up to 51 Mbps, with speeds from 10 Mpbs up to 140 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 1.0 and as high as 20, with an average of 6.7 Mbps throughout the city. CenturyLink DSL is rated about the same as other types of internet service available in Black Diamond from CenturyLink in terms of customer satisfaction.
Internet in Black Diamond by Neighborhood and ZIP Code
Black Diamond has 1 ZIP code with its own page. Each row links to that place’s page.
Neighborhoods in Black Diamond
| Neighborhood | People | Homes with fiber | Average top speed | Providers at a typical address | Report card | Connectivity |
|---|
ZIP codes in Black Diamond
| ZIP code | People | Homes with fiber | Average top speed | Providers at a typical address | Report card | Connectivity |
|---|---|---|---|---|---|---|
| 98010 | 5,661 | 14.2% | 1,929 Mbps | 5.2 | C | 89/100 |
How Black Diamond Compares to Nearby Places
The 10 places nearest to Black Diamond that have their own pages are all within 7 miles. Among them, Ravensdale has the most homes with fiber (19.1%) and Hobart the fewest (0.2%); Black Diamond has 19.2%.
| Place | People | Homes with fiber | Average top speed | Providers at a typical address | Report card | Connectivity |
|---|---|---|---|---|---|---|
| Black Diamond (this page) | 5,326 | 19.2% | 1,876 Mbps | 5.4 | C | 90/100 |
| Maple Valley | 31,008 | 5.5% | 1,962 Mbps | 6.1 | C | 93/100 |
| Covington | 21,305 | 15.0% | 1,977 Mbps | 5.3 | C | 89/100 |
| Lake Morton-Berrydale | 11,732 | 5.2% | 1,868 Mbps | 5.6 | C | 84/100 |
| Hobart | 6,687 | 0.2% | 1,936 Mbps | 5.7 | C | 85/100 |
| Ravensdale | 3,357 | 19.1% | 1,714 Mbps | 5.4 | C | 71/100 |
| Kangley | 239 | 0.0% | 1,757 Mbps | 2.9 | D | 62/100 |
| Wabash | 229 | 0.0% | 1,134 Mbps | 5.7 | C- | 64/100 |
| Kummer | 194 | 58.8% | 1,826 Mbps | 5.3 | C+ | 89/100 |
| Kanaskat | 93 | 0.0% | 118 Mbps | 2.7 | F | 80/100 |
| Cumberland | 93 | 0.0% | 99 Mbps | 3 | F | 50/100 |
Who is the Fastest Internet Provider in Black Diamond?
According to unbiased feedback from real internet customers, they reported being happiest with speeds provided by T-Mobile Home Internet. On the other hand, based on data provided by the internet providers to the FCC, XFINITY from Comcast 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 Black Diamond
| XFINITY from Comcast | 2,000 |
|---|---|
| Astound Broadband | 2,000 |
| Quantum Fiber | 2,000 |
| CenturyLink | 1,000 |
| Verizon | 300 |
| T-Mobile Home Internet | 100 |
| Viasat | 100 |
| SkyNet Broadband | 100 |
| AT&T | 100 |
| EarthLink | 100 |
| HughesNet | 25 |
How fast is your internet?
Test your connection here and see it next to the speeds providers advertise in Black Diamond. It takes about 20 seconds and, on a fast line, can move a few hundred MB of data.
Customer Ratings for Black Diamond Internet Providers
Based on 200 reviews from Washington internet customers, T-Mobile Home Internet is the best internet service provider for Black Diamond residents. T-Mobile Home Internet was rated at an average of 4.00 out of 5 in our report for overall customer satisfaction. AT&T wins for second-place in Washington, with 4.00 out of 5 stars and 34.7% coverage in Black Diamond.
At a national level, based on 4960 national reviews for any of the providers listed above, T-Mobile Home Internet is rated higher than any other provider, with a rating of 4.02 out of 5.
Local, State, and National Ratings for all Black Diamond Internet Providers
The table below shows average customer ratings from customers in Black Diamond, Washington, and customers throughout the country.
| ISP / Tech Type | Black Diamond Overall | Washington Overall | National Overall | For Service | ||
|---|---|---|---|---|---|---|
| Quantum Fiber | (0) |  (3) | (52) | View Plans | ||
| T-Mobile Home Internet | (0) | (14) | (342) | View Plans | ||
| Verizon | (0) | (7) | (816) | View Plans | ||
| AT&T | (0) | (1) | (1051) | View Plans | ||
| CenturyLink | (0) | (24) | (183) | View Plans | ||
| XFINITY | (0) | (130) | (2379) | View Plans | ||
| HughesNet | (0) |  (2) |  (25) | View Plans | ||
| Astound Broadband | (0) | (21) | (122) | View Plans | ||
| EarthLink | (0) | (0) | (15) | View Plans | ||
| Viasat | (0) | (0) |  (12) | View Plans | ||
| SkyNet Broadband | (0) | (0) | (0) | View Plans |
Customer Ratings for Internet Provider Speeds in Black Diamond
Based on data reported by Black Diamond ISPs to the FCC, the fastest speeds in the city are available through XFINITY from Comcast. The company offers speeds up to 2,000 Mbps in Black Diamond. Therefore, the average customer can get up to 1,962 Mbps if they’re willing to purchase the fastest subscription tier available at their homes.
However, actual customers rated their satisfaction with internet speed highest with T-Mobile Home Internet. This indicates T-Mobile Home Internet reliably delivers speeds expected by the customer based on the plan they are paying for.
| ISP / Tech Type | Black Diamond Speed | Washington Speed | National Speed | For Service | ||
|---|---|---|---|---|---|---|
| Quantum Fiber | (0) |  (3) | (52) | View Plans | ||
| Verizon | (0) | (7) | (816) | View Plans | ||
| T-Mobile Home Internet | (0) | (14) | (342) | View Plans | ||
| XFINITY | (0) | (130) | (2379) | View Plans | ||
| AT&T | (0) | (1) | (1051) | View Plans | ||
| Astound Broadband | (0) | (21) | (122) | View Plans | ||
| CenturyLink | (0) | (24) | (183) | View Plans | ||
| HughesNet | (0) | (2) | (25) | View Plans | ||
| EarthLink | (0) | (0) | (15) | View Plans | ||
| Viasat | (0) | (0) | (12) | View Plans | ||
| SkyNet Broadband | (0) | (0) | (0) | View Plans |
Who is the Cheapest Internet Provider in Black Diamond?
Of the providers in Black Diamond, customers rate T-Mobile Home Internet the best for price. Data comes from customers rating their satisfaction with pricing: in Black Diamond where enough of them have reviewed a provider, otherwise across Washington or the country. This feedback is valuable because it considers price changes and whether the speeds paid for are worth it.
T-Mobile Home Internet is rated 3.86 out of 5 for price, which is similar to the average across all internet providers in the country. Verizon is rated second for affordability, with an average price rating of 3.71 out of 5.
The table below shows how customers in Black Diamond, Washington, and the United States rated the affordability of their internet service.
Rated Affordability in Black Diamond
| ISP / Tech Type | Black Diamond Affordability | Washington Affordability | National Affordability | For Service | ||
|---|---|---|---|---|---|---|
| Quantum Fiber | (0) | (3) | (52) | View Plans | ||
| T-Mobile Home Internet | (0) | (14) | (342) | View Plans | ||
| Verizon | (0) | (7) | (816) | View Plans | ||
| CenturyLink | (0) | (24) | (183) | View Plans | ||
| AT&T | (0) |  (1) | (1051) | View Plans | ||
| HughesNet | (0) | (2) | (25) | View Plans | ||
| XFINITY | (0) | (130) | (2379) | View Plans | ||
| Astound Broadband | (0) | (21) | (122) | View Plans | ||
| EarthLink | (0) | (0) | (15) | View Plans | ||
| Viasat | (0) | (0) | (12) | View Plans | ||
| SkyNet Broadband | (0) | (0) | (0) | View Plans |
Customer Reviews for Internet Service Providers in Washington
Customer Reviews
ISPReports User
HughesNet Satellite
August 05, 2026 ### One star only because zero isn’t an option HughesNet provided, without question, the worst internet service and customer service we have ever experienced. We remained customers for seven years—not because we were satisfied, but because we live in a rural area and had no other viable option. The service was never consistently reliable. Streaming a complete movie was nearly impossible. Calls repeatedly dropped, including calls made to HughesNet’s own customer service department because the connection was so unstable. When that happened, they wouldn’t call us back, and we often couldn’t reconnect with them to finish resolving the problem. HughesNet repeatedly claimed we had used all our data, even during periods when we had barely streamed anything and hadn’t managed to watch complete movies. We were told that exceeding the data allowance would only result in slower speeds, but what we experienced wasn’t merely a slowdown—the service would become completely disrupted and practically unusable. Technical support was equally frustrating. Technicians would identify problems or recommend solutions, only for HughesNet to refuse to authorize or implement what its own technicians recommended. We spent years calling, troubleshooting, repeating the same information, and being passed around without receiving a lasting solution. We paid every month for a service that frequently failed to provide even basic, dependable internet access. The moment fiber internet finally became available in our area, we left HughesNet. Since switching, the difference has been unbelievable: reliable service, uninterrupted streaming, stable calls, and none of the constant excuses or mysterious data problems we dealt with before. That alone confirmed that our devices and usage were not the real issue. Seven years with HughesNet gave them more than enough opportunity to provide the service and support we were paying for. They consistently failed at both. I would never recommend HughesNet to anyone. If it appears to be your only option, investigate absolutely every possible alternative before signing up. Being without internet may be less aggravating than paying for internet that repeatedly doesn’t work.
A Mukilteo, WA Customer
XFINITY Cable
June 15, 2026 My internet provider and has consistently provided me with fast speeds. I never have a problem with down loads or streaming. In addition there is never any down time. Even during occasional outages there is always communications from the company. In a short period of time the system is always back up and running.
A Pullman, WA Customer
Ziply Fiber
June 07, 2026 A Tacoma, WA Customer
T-Mobile Home Internet Fixed Wireless
May 16, 2026 I found T-Mobile home internet this year after many years of dissatisfaction with Comcast/Xfinity. So far, it has been a superior service for less money. We've had a couple of blips here and there, but resolved quickly with resetting the wireless router. The router plus 1 booster handles a whole house with about 10 continuously connected devices.
A Walla Walla, WA Customer
Spectrum Cable
May 11, 2026 My internet provider has done exactly what I expected. The outages have been minimal and short in nature. I've never had a major complaint. When a competitor came in with a way lower offer in our neighborhood, I was going to switch and Spectrum essentially sliced my bill in half just like that. I didn't even raise a stink, they just offered it right away. Great customer service and I'm totally fine with the speed they provide, since we're not very "active" internet users.
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Which ISP Should You Choose in Black Diamond?
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 Black Diamond is T-Mobile Home Internet.
- The fastest internet provider should be XFINITY from Comcast. Considering speed for the money and reliability in speeds, T-Mobile Home Internet may be a better choice based on real-world local customer feedback.
- The most affordable internet provider in Black Diamond is T-Mobile Home Internet.
- Viasat, T-Mobile Home Internet, and HughesNet has the broadest coverage in Black Diamond, available to 96.7% of homes, and is most likely to cover your home. To find out exactly what’s available at your home, please use our address search tool.