11 Best Internet Providers in King County, WA
Find internet availability by address in King County, WA
Jump to: Best Internet Provider | Availability Maps | Customer Reviews | King County ISP Report Card | Business Internet in King County
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King County ISP Report Card | B |
 |
Download Speed for Most Households | 2,666 Mbps |
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Number of Internet Service Providers | 11 |
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Real King County Customer Ratings | 88 |
This page reflects the most recent FCC update from January 06, 2026, based on the Broadband Data Collection as of June 30, 2025.
This page reflects the most recent FCC update from January 06, 2026, based on the Broadband Data Collection as of June 30, 2025.
King County has 11 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 county. Reviews are grouped by provider and the type of service they offer, covering all 4 available internet technologies in King County.
King County overview
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King County has 11 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 county. Reviews are grouped by provider and the type of service they offer, covering all 4 available internet technologies in King County.
Compare Providers Ranked by Coverage, Speed, and Customer Ratings
XFINITY
Connection
Customer Rating
Fiber
Cable
Centurylink
Connection
Customer Rating
Fiber
DSL
Quantum Fiber
Connection
Customer Rating
Fiber
Ziply
Connection
Customer Rating
Fiber
DSL
Above are the top 4 providers in King County, WA for most people based on high speed internet coverage, speeds, and customer reviews. Click below to see all providers in your county.
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 King County ratings may vary and are shown below.
Who is the Best Internet Provider in King County, WA?
T-Mobile Home Internet is the highest-rated internet provider in King County based on 210 Washington customer reviews, and Google Fiber has the highest rating nationwide. The provider information above and the information immediately below can help you decide. Compare provider ratings and review counts above.
The chart and table below show average customer ratings from customers in King County, Washington, and customers throughout the country.
Top Rated Internet Providers in King County
Local, State, and National Ratings for all King County Internet Providers
| ISP / Tech Type | King County Overall | Washington Overall | National Overall | For Service | ||
|---|---|---|---|---|---|---|
| T-Mobile Home Internet |  (1) | (10) | (284) | View Plans | ||
| Quantum Fiber |  (2) | (2) | (42) | View Plans | ||
| AT&T | (1) | (1) | (924) | View Plans | ||
| Ziply | (11) | (30) | (60) | View Plans | ||
| Centurylink | (11) | (23) | (163) | View Plans | ||
| Verizon | (2) | (7) | (723) | View Plans | ||
| XFINITY | (48) | (128) | (2164) | View Plans | ||
| Google Fiber | (1) | (1) | (89) | View Plans | ||
| Astound Broadband | (10) | (19) | (109) | View Plans | ||
| HughesNet |  (0) |  (1) | (18) | View Plans | ||
| EarthLink | (0) | (0) | (12) | View Plans | ||
| Viasat | (0) | (0) | (11) | View Plans | ||
| SkyNet Broadband | (0) | (0) | (0) | View Plans |
Based on 210 reviews from Washington internet customers, T-Mobile Home Internet is the best internet service provider for King County residents. T-Mobile Home Internet was rated at an average of 3.90 out of 5 in our report for overall customer satisfaction. Quantum Fiber wins for second-place in Washington, with 4.50 out of 5 stars and 42.6% coverage in King County.
At a national level, based on 4626 national reviews for any of the providers listed above, Google Fiber is rated higher than any other provider, with a rating of 4.26 out of 5.
Which Providers are Available at my Home in King County?
a different provider.
Internet Availability Key
Speeds and coverage vary within the county, and sometimes even from block to block. The map shows speeds per provider and where each provider is available.
Who is the Fastest Internet Provider in King County?
According to unbiased feedback from real internet customers in the county, they reported being happiest with speeds provided by Quantum Fiber. On the other hand, based on data provided by the internet providers to the FCC, Ziply 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 King County
| ISP / Tech Type | Max Advertised Speed | ||
|---|---|---|---|
| Quantum Fiber | 8,000 Mbps | ||
| Ziply | 6,000 Mbps | ||
| Astound Broadband | 2,000 Mbps | ||
| Centurylink | 2,000 Mbps | ||
| XFINITY from Comcast | 2,000 Mbps | ||
| Google Fiber | 1,000 Mbps | ||
| Verizon | 1,000 Mbps | ||
| AT&T | 100 Mbps | ||
| EarthLink | 100 Mbps | ||
| T-Mobile Home Internet | 100 Mbps | ||
| Viasat | 100 Mbps | ||
| SkyNet Broadband | 85 Mbps | ||
| HughesNet | 25 Mbps |
Customer Ratings for Internet Provider Speeds in King County
| ISP / Tech Type | King County Speed | Washington Speed | National Speed | For Service | ||
|---|---|---|---|---|---|---|
| T-Mobile Home Internet | (1) | (10) | (284) | View Plans | ||
| Quantum Fiber | (2) | (2) | (42) | View Plans | ||
| Google Fiber | (1) | (1) | (89) | View Plans | ||
| AT&T | (1) | (1) | (924) | View Plans | ||
| Verizon | (2) | (7) | (723) | View Plans | ||
| Ziply | (11) | (30) | (60) | View Plans | ||
| XFINITY | (48) | (128) | (2164) | View Plans | ||
| Astound Broadband | (10) | (19) | (109) | View Plans | ||
| Centurylink | (11) | (23) | (163) | View Plans | ||
| HughesNet | (0) | (1) | (18) | View Plans | ||
| EarthLink | (0) | (0) | (12) | View Plans | ||
| Viasat | (0) | (0) |  (11) | View Plans | ||
| SkyNet Broadband | (0) | (0) | (0) | View Plans |
Based on data reported by King County ISPs to the FCC, the fastest speeds in the county are available through Ziply. The company offers speeds up to 6,000 Mbps in King County. Therefore, the average customer can get up to 5,185 Mbps if they're willing to purchase the fastest subscription tier available at their homes.
Additionally, actual customers in the county rated their satisfaction with internet speed highest with Quantum Fiber. This indicates Quantum Fiber reliably delivers speeds expected by the customer based on the plan they are paying for.
Who is the Cheapest Internet Provider in King County?
Washington customers rate T-Mobile Home Internet as the cheapest internet service provider in state. Data comes from customers in the state rating their satisfaction with pricing. This feedback is valuable because it considers price changes and whether the speeds paid for are worth it.
T-Mobile Home Internet received a local rating of 5.00 out of 5, which is much higher than the average across all internet providers in the country. Centurylink is rated in second place for affordability by the company’s King County customers with an average price rating of 3.58 out of 5.
The chart and graph below show how customers in King County, Washington, and the United States rated the affordability of their internet service.
Rated Affordability in King County
| ISP / Tech Type | King County Affordability | Washington Affordability | National Affordability | For Service | ||
|---|---|---|---|---|---|---|
| T-Mobile Home Internet | (1) | (10) | (284) | View Plans | ||
| Google Fiber | (1) | (1) | (89) | View Plans | ||
| Quantum Fiber | (2) | (2) | (42) | View Plans | ||
| Centurylink | (11) | (23) | (163) | View Plans | ||
| Ziply | (11) | (30) | (60) | View Plans | ||
| Verizon | (2) | (7) | (723) | View Plans | ||
| XFINITY | (48) | (128) | (2164) | View Plans | ||
| Astound Broadband | (10) | (19) | (109) | View Plans | ||
| AT&T | (1) | (1) | (924) | View Plans | ||
| HughesNet | (0) | (1) | (18) | View Plans | ||
| EarthLink | (0) | (0) | (12) | View Plans | ||
| Viasat | (0) | (0) | (11) | View Plans | ||
| SkyNet Broadband | (0) | (0) | (0) | View Plans |
King County Internet Health Assessment
ISP Reports evaluates the technological infrastructure across the United States. This includes assessing a grade for ISP providers and infrastructure in the county and setting an index number for the digital connectivity of its residents. You can view the ISP Report Card and the Digital Connectivity Index for King County below, including the metrics used and how King County compares to the rest of Washington and nation.
| Metric
(hover for details)
|
King County | Washington | USA | ||
|---|---|---|---|---|---|
| Fiber Availability Percent The percentage of households in King County that have a Fiber internet connection available to their home. | 60.06% | 51.43% | 67.25% | ||
| Average Download SpeedThe maximum download speed most households can get on average. This is measured by availability in a block group and weighted by the population in that area. | 2,666 Mbps | 2,720 Mbps | 3,293 Mbps | ||
| Provider CountThe number of providers available for most people. This is a weighted average by block rather than a total for King County. | 6.5 | 6.5 | 6.8 |
| Average Household SizeA larger household size in a county indicates that there will be a greater need for bandwidth due to simultaneous usage, multiple devices, and network congestion. | 2.5 | 2.6 | 2.7 | ||
| Work From Home PercentA higher percent of the population working from home indicates bandwidth requirements being more widely needed rather than consolidated to commercial portions of the city. | 26% | 17% | 14% | ||
| Households with DevicesA higher percentage of households with computing devices in the home indicates a higher level of infrastructure needed to support those households. | 98% | 97% | 95% | ||
| Households with InternetA higher percentage of households with internet indicates a higher need for usage and connectivity in people’s daily lives. | 95% | 93% | 90% | ||
| Households with BroadbandA higher percentage of households with a broadband connection (defined as speeds above 25 Mbps) indicates heavier usage needs within these households. | 85% | 80% | 75% | ||
| Broadband Usage vs. AvailabilityThis measures what percentage of households who have a broadband connection to their home actually have an active subscription to that service. | 86% | 81% | 76% |
Our demographic data is sourced from the latest 5-year release of the American Community Survey by the US Census Bureau.
King County ISP Report Card & Digital Connectivity Index
The ISP Report Card in King County is B, which is much better than other counties. The local demand for broadband internet connectivity in King County is high with a score of 83 / 100 in our Digital Connectivity Index. This means that internet service providers operating in King County have done a great job meeting the needs of its residents.
The King County ISP Report Card evaluates the county on availability and speed metrics compared to other counties in the United States. ISP Infrastructure can vary greatly and on its own isn’t a perfect measure of what a county needs. Please see our ISP Report Card along with the Digital Connectivity Index above to evaluate how well the connectivity demand is met by the existing infrastructure.
95% of King County households have an internet connection despite having 99.20% availability. 85% of households have fiber, cable, or DSL, 4% have satellite, 0% are still on dial-up, and 2% of households have internet but don’t pay for a subscription because it’s subsidized by the Affordable Connectivity Program.
As you can see in the table above, while 85% of households have a broadband connection such as fiber, cable or DSL available to their home, 86% subscribe to it. A very large amount of King County residents are taking advantage of the available internet infrastructure.
For more details, please visit our ISP Report Card and Digital Connectivity Index pages.
How do Neighboring Counties Compare to King County?
- ISP Report Card: B-
- Digital Connectivity Index: 80 / 100
- ISP Report Card: B+
- Digital Connectivity Index: 84 / 100
- ISP Report Card: C+
- Digital Connectivity Index: 80 / 100
- ISP Report Card: C+
- Digital Connectivity Index: 68 / 100
- ISP Report Card: C-
- Digital Connectivity Index: 59 / 100
- ISP Report Card: C
- Digital Connectivity Index: 79 / 100
- ISP Report Card: C
- Digital Connectivity Index: 60 / 100
- ISP Report Card: C
- Digital Connectivity Index: 62 / 100
- ISP Report Card: B
- Digital Connectivity Index: 66 / 100
How Much Speed does a King County Household Need?
Higher speed is typically preferred, but that comes at a higher price. The average size of a household in King County is 2.5, which is smaller than the Washington average of 2.6 and smaller than the national average of 2.7. King County's average household income is $134,908 which is much higher than the Washington average of $106,027 and much higher than the national average of $90,606. Homes with more people living in them and with higher incomes tend to indicate more devices being used more often.
King County also has 15% of its population enrolled in school between the 6th grade and college level, this is higher than the Washington average of 15%. Additionally, 26% of residents work from home, which is higher than the 17% of residents in Washington who work from home. This and other factors you can see above show us that the community of King County has a very high need for internet connectivity and speeds.
Compared to the rest of the country, King County households are much more technology-engaged. 98% of households have some sort of computing device, 92% have desktops or laptops in the home, and 96% have smartphones. To see what speeds you are currently getting, please visit our internet speed test tool.
Which Fiber Internet Providers are Available in King County?
Quantum Fiber in King County, WA
Availability:
42.6%
Customer Rating:
(47)
Avg. Download Speed
2,303 Mbps
Quantum Fiber offers Fiber service to 42.6% of King County homes. Across the county, Quantum Fiber is the only type of service available from the company, with speeds up to 2,303 Mbps, with speeds from 940 Mpbs up to 8,000 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 940 and as high as 8,000, with an average of 1,555 Mbps throughout the county.
Centurylink Fiber in King County, WA
Availability:
36.0%
Customer Rating:
(60)
Avg. Download Speed
955 Mbps
Centurylink offers Fiber service to 36.0% of King County homes. Across the county, Centurylink Fiber has speeds up to 955 Mbps, with speeds from 10 Mpbs up to 2,000 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 1.0 and as high as 1,000, with an average of 889 Mbps throughout the county. Centurylink Fiber is rated higher than other types of internet service available in King County from Centurylink in terms of customer satisfaction.
Ziply Fiber in King County, WA
Availability:
13.8%
Customer Rating:
(59)
Avg. Download Speed
5,882 Mbps
Ziply offers Fiber service to 13.8% of King County homes. Across the county, Ziply Fiber has speeds up to 5,882 Mbps, with speeds from 1,000 Mpbs up to 6,000 Mbps depending on the address. Upload speeds are symmetrical, meaning they are exactly the same as download speeds for Ziply Fiber. Ziply Fiber is rated about the same as other types of internet service available in King County from Ziply in terms of customer satisfaction.
Astound Broadband Fiber in King County, WA
Availability:
10.2%
Customer Rating:
(20)
Avg. Download Speed
2,000 Mbps
Astound Broadband offers Fiber service to 10.2% of King County homes. Across the county, Astound Broadband Fiber has speeds up to 2,000 Mbps
XFINITY Fiber in King County, WA
Availability:
3.0%
Customer Rating:
(302)
Avg. Download Speed
1,531 Mbps
XFINITY from Comcast offers Fiber service to 3.0% of King County homes. Across the county, XFINITY Fiber has speeds up to 1,531 Mbps, with speeds from 1,000 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 2,000, with an average of 507 Mbps throughout the county. XFINITY Fiber is rated about the same as other types of internet service available in King County from XFINITY in terms of customer satisfaction.
Which Cable Internet Providers are Available in King County?
XFINITY Cable in King County, WA
Availability:
97.5%
Customer Rating:
(1,910)
Avg. Download Speed
1,875 Mbps
XFINITY from Comcast offers Cable service to 97.5% of King County homes. Across the county, XFINITY Cable has speeds up to 1,875 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 2,000, with an average of 628 Mbps throughout the county. XFINITY Cable is rated about the same as other types of internet service available in King County from XFINITY in terms of customer satisfaction.
Astound Broadband Cable in King County, WA
Availability:
13.6%
Customer Rating:
(90)
Avg. Download Speed
1,500 Mbps
Astound Broadband offers Cable service to 13.6% of King County homes. Across the county, Astound Broadband Cable has speeds up to 1,500 Mbps
Which DSL Internet Providers are Available in King County?
Centurylink DSL in King County, WA
Availability:
58.9%
Customer Rating:
(101)
Avg. Download Speed
86 Mbps
Centurylink offers DSL service to 58.9% of King County homes. Across the county, Centurylink DSL has speeds up to 86 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 100, with an average of 11 Mbps throughout the county. Centurylink DSL is rated lower than other types of internet service available in King County from Centurylink in terms of customer satisfaction.
Ziply DSL in King County, WA
Availability:
7.2%
Customer Rating:
(7)
Avg. Download Speed
19 Mbps
Ziply offers DSL service to 7.2% of King County homes. Across the county, Ziply DSL has speeds up to 19 Mbps, with speeds from 10 Mpbs up to 115 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 1.0 and as high as 10, with an average of 1.5 Mbps throughout the county. Ziply DSL is rated lower than other types of internet service available in King County from Ziply in terms of customer satisfaction.
Astound Broadband DSL in King County, WA
Availability:
1.7%
Customer Rating:
(3)
Avg. Download Speed
1,000 Mbps
Astound Broadband offers DSL service to 1.7% of King County homes. Across the county, Astound Broadband DSL has speeds up to 1,000 Mbps
Which Fixed Wireless and LTE Internet Providers are Available in King County?
T-Mobile Home Internet Fixed Wireless in King County, WA
Availability:
96.6%
Customer Rating:
(0)
Avg. Download Speed
76 Mbps
T-Mobile Home Internet offers Fixed Wireless service to 96.6% of King County homes. Across the county, T-Mobile Home Internet Fixed Wireless is the only type of service available from the company, with speeds up to 76 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 15 Mbps throughout the county.
EarthLink Fixed Wireless in King County, WA
Availability:
90.8%
Customer Rating:
(0)
Avg. Download Speed
53 Mbps
EarthLink offers Fixed Wireless service to 90.8% of King County homes. Across the county, EarthLink Fixed Wireless is the only type of service available from the company, with speeds up to 53 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 9.4 Mbps throughout the county.
AT&T Fixed Wireless in King County, WA
Availability:
90.8%
Customer Rating:
(0)
Avg. Download Speed
53 Mbps
AT&T offers Fixed Wireless service to 90.8% of King County homes. Across the county, AT&T Fixed Wireless is the only type of service available from the company, with speeds up to 53 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 9.4 Mbps throughout the county.
Verizon Fixed Wireless in King County, WA
Availability:
75.6%
Customer Rating:
(0)
Avg. Download Speed
382 Mbps
Verizon offers Fixed Wireless service to 75.6% of King County homes. Across the county, Verizon Fixed Wireless is the only type of service available from the company, with speeds up to 382 Mbps, with speeds from 300 Mpbs up to 1,000 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 20 and as high as 75, with an average of 26 Mbps throughout the county.
Google Fiber Fixed Wireless in King County, WA
Availability:
2.7%
Customer Rating:
(0)
Avg. Download Speed
988 Mbps
Google Fiber offers Fixed Wireless service to 2.7% of King County homes. Across the county, Google Fiber Fixed Wireless is the only type of service available from the company, with speeds up to 988 Mbps, with speeds from 100 Mpbs up to 1,000 Mbps depending on the address. Upload speeds are symmetrical, meaning they are exactly the same as download speeds for Google Fiber Fixed Wireless.
SkyNet Broadband Fixed Wireless in King County, WA
Availability:
1.0%
Customer Rating:
(0)
Avg. Download Speed
85 Mbps
SkyNet Broadband offers Fixed Wireless service to 1.0% of King County homes. Across the county, SkyNet Broadband Fixed Wireless is the only type of service available from the company, with speeds up to 85 Mbps
Which ISP Should You Choose in King County?
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 King County is T-Mobile Home Internet.
- The fastest internet provider should be Ziply. Considering speed for the money and reliability in speeds, Quantum Fiber may be a better choice based on real-world local customer feedback.
- The most affordable internet provider in King County is T-Mobile Home Internet.
- XFINITY from Comcast, Viasat, and HughesNet has the broadest coverage in King County, and is most likely to cover your home. To find out exactly what's available at your home, please use our address search tool.
How does King County compare to other cities with a similar population?
To see how King County stacks up on the national level, it's useful to look at some other cities with similarly sized populations. Below you can see a list of these cities and how they compare to King County's B ISP Report Card and 83 / 100 Digital Connectivity Index.
- ISP Report Card: B
- Digital Connectivity Index: 86 / 100
- ISP Report Card: B
- Digital Connectivity Index: 80 / 100
- ISP Report Card: B
- Digital Connectivity Index: 78 / 100
- ISP Report Card: B
- Digital Connectivity Index: 85 / 100
- ISP Report Card: A-
- Digital Connectivity Index: 74 / 100
- ISP Report Card: B+
- Digital Connectivity Index: 70 / 100
- ISP Report Card: B
- Digital Connectivity Index: 68 / 100
- ISP Report Card: C+
- Digital Connectivity Index: 81 / 100
- ISP Report Card: A-
- Digital Connectivity Index: 62 / 100
Customer Reviews
Customer Reviews for Internet Service Providers in Washington
Customer Reviews
Lauren S
XFINITY Fiber
January 02, 2026 I like my internet provider and the service I get from them. The speed is often consistent, I've only had one outage in the 2 years that I've been with them and they communicated well about it (when/where it was happening, when they expected service to be back) and it was back-up pretty quickly after. One thing I dislike about them is that they sometimes raise their prices. As I said, I've been with them for 2 years and they've raised their prices twice since then and while that might not seem like a lot, the main reason I got internet through them was because of the low price so when they raise it it makes me want to switch. I also wish they had better bundles and more incentives to purchase the bundles, like including deals with other companies (disney+, discounts at stores, etc.), and had cheaper prices to bundle internet and home service.
More
Steve J.
Anacortes Fiber
December 28, 2025 We have an interesting situation where our city provided fiber optic internet to neighborhoods with multiple housing tracks. They actually installed the fiber optics through existing water pipes to get from the main part of town to the outline areas. It was a huge effort and they have built the company up to now be able to keep up with demand throughout the city of about 15,000 people. Strange enough, they were able to hire good technicians and engineers and people to be able to install directly into the home providing us with excellent internet service inadequate speed.
More
A Seattle, WA Customer
XFINITY Fiber
December 27, 2025 More
Rebeca H.
XFINITY Cable
December 03, 2025 I have always relied on Comcast to deliver consistent quality and reliability in my internet service. The few times over 10 years there has been an outage, I am comforted by my past experiences of swift restoration of service. In all regards, I have never been disappointed. In addition, Xfinity (Comcast) always has cost-saving promotions.
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Laura J
Centurylink Fiber
December 01, 2025 Overall we've had a good experience with our provider. When we bought our home it was not wired for fiber, but the company was willing to come out and install it for us, and the process was smooth and easy. We are also in a price for life program such that our internet costs have not gone up since we bought into our plan six years ago. As I see additional fees and charges being introduced for other customers, I am grateful that we have the price for life lock. The only concern at the moment is that our speed is not very fast because our router is outdated. When we had someone out to troubleshoot an outage a couple weeks ago, they recommended that we replace the router with a newer one that would support faster speeds, but if we do that we will lose our price for life guarantee. At the moment our router is meeting our needs, but I'm a little anxious about the cost going up when it eventually fails.
More
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