In King County there are 3 residential DSL providers covering 65.65% of the county. The average home can get speeds up to 104 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 DSL internet providers in King County, WA.
To see availability maps for all providers including fiber, cable, DSL, and more in King County, WA please click below.
King County, WA Availability Maps
DSL Internet Service Providers in King County
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 King County are not shown.
King 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.
Viasat Satellite Internet
Where in King County is DSL internet available?
DSL Internet Availability Key
DSL is available in 65.65% of King County. Areas in green have DSL internet service, where areas in yellow or red may not. The most widely available provider is Centurylink. Call one of the companies with service in King County above to see who has service at your home.
How fast is DSL internet in King County?
The map below shows maximum DSL internet speeds by area in King County.
DSL Internet Speed Key
The average King County home can get up to 104 Mbps on their DSL internet plan. The fastest DSL download speed in the county is 1,000 Mbps, which 1.74% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, 14.94% of homes can only purchase plans up to 10 Mbps. See the internet provider details below for info about their speed and coverage in King County.
DSL internet speeds tend to be faster in the west parts of King County, and slower in the northeast areas of the county.
Is DSL the fastest internet I can get in King County?
The fastest internet for you may vary based on where in King County you live. In general, cable competes most often with DSL in the county.
- Fiber is the fastest internet type for 40.52% of King County homes.
- Cable is fastest for 58.35% of the county.
- 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 King County homes.
DSL Providers in Depth
Below you'll find which TV and internet providers offer service in King County, along with details on where in King County and at what speeds.
Centurylink DSL in King County, WA
Centurylink DSL coverage
About 58.87%, or 1,336,087 people, have Centurylink DSL internet available to them in the county. The company covers the entire King County area. Centurylink is one of the largest internet service providers internet service providers in the US, with internet service available in a majority of King County.
Centurylink DSL download speeds
Centurylink is below average when comparing download speeds to all other internet providers in King County. Versus other DSL providers in the area, Centurylink DSL is below average. There are 7 different maximum speeds throughout King County. The fastest plan anyone in King County can order from Centurylink goes up to 140 Mbps, the slowest package only goes up to 10 Mbps, and the county-wide average maximum speed for King County customers is up to 86 Mbps.
Show all download speeds
- 25.5% up to 140.0 Mbps
- 0.3% up to 120.0 Mbps
- 32.6% up to 100.0 Mbps
- 11.8% up to 80.0 Mbps
- 4.0% up to 60.0 Mbps
- 8.3% up to 40.0 Mbps
- 17.5% up to 10.0 Mbps
Centurylink DSL upload speeds
In King County download speeds tend to be faster than than upload speeds for Centurylink DSL. Compared to other ISPs, Centurylink is below average where upload speeds are concerned, and the fastest compared to other King County DSL providers. Centurylink offers 9 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 King County is up to 100 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, Centurylink customers can get speeds up to 11 Mbps.
Show all upload speeds
- 0.5% up to 100.0 Mbps
- 0.0% up to 60.0 Mbps
- 0.1% up to 50.0 Mbps
- 1.4% up to 40.0 Mbps
- 25.5% up to 20.0 Mbps
- 42.8% up to 10.0 Mbps
- 4.3% up to 5.0 Mbps
- 7.9% up to 3.0 Mbps
- 17.5% up to 1.0 Mbps
Ziply DSL in King County, WA
Ziply DSL coverage
About 7.19%, or 163,169 people, have Ziply DSL internet available to them in the county. The company covers the northeast, north, east, and northwest King County area. Ziply is one of the largest internet service providers internet service providers in the US, with internet service available in a very small piece of King County.
Ziply DSL download speeds
Ziply is below average when comparing download speeds to all other internet providers in King County. Versus other DSL providers in the area, Ziply DSL is the slowest. There are 6 different maximum speeds throughout King County. The fastest plan anyone in King County can order from Ziply goes up to 115 Mbps, the slowest package only goes up to 10 Mbps, and the county-wide average maximum speed for King County customers is up to 19 Mbps.
Show all download speeds
- 3.5% up to 115.0 Mbps
- 3.2% up to 90.0 Mbps
- 2.2% up to 70.0 Mbps
- 5.5% up to 45.0 Mbps
- 0.1% up to 40.0 Mbps
- 85.5% up to 10.0 Mbps
Ziply DSL upload speeds
In King County download speeds tend to be faster than than upload speeds for Ziply DSL. Compared to other ISPs, Ziply is below average where upload speeds are concerned, and the slowest compared to other King County DSL providers. Ziply offers 5 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 King County is up to 10 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, Ziply customers can get speeds up to 1.5 Mbps.
Show all upload speeds
- 0.1% up to 10.0 Mbps
- 3.5% up to 7.0 Mbps
- 3.2% up to 5.0 Mbps
- 7.7% up to 3.0 Mbps
- 85.5% up to 1.0 Mbps
Astound Broadband DSL in King County, WA
Astound Broadband DSL coverage
About 1.74%, or 39,417 people, have Astound Broadband DSL internet available to them in the county. The company covers the west, central, northwest, southeast, northeast, east, north, and south King County 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 King County.
Astound Broadband DSL download speeds
Astound Broadband is below average when comparing download speeds to all other internet providers in King County. Versus other DSL providers in the area, Astound Broadband DSL is the fastest. There are no different maximum speeds throughout King County. The fastest plan anyone in King County can order from Astound Broadband goes up to 1,000 Mbps, and all King County customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
Astound Broadband DSL upload speeds
In King County download speeds tend to be faster than than upload speeds for Astound Broadband DSL. Compared to other ISPs, Astound Broadband is below average where upload speeds are concerned, and above average compared to other King County DSL providers. Astound Broadband offers no different upload speeds across the county. The fastest upload speed available to anyone from this ISP in King County is up to 10 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 10.0 Mbps
King County DSL by Area
This information is most helpful to those looking for homes or considering moving to King County or any of the areas nearby.
How does DSL internet in King County compare to the rest of Washington?
DSL internet speeds in King County are much faster versus the average speeds in Washington: 0.00 Mbps in Washington versus 104 Mbps in the county. The state has similar DSL availability compared to the county. Average DSL coverage in Washington is 0.00% versus 65.65% in King County.
What zip codes have DSL internet?
DSL internet coverage varies by zip code and neighborhood. Some examples in or around King County are shown below. You can enter any zip code here to see TV and internet providers by zip code.
What does DSL 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
- Kitsap County, WA: more DSL coverage, slower speeds
- Snohomish County, WA: less DSL coverage, slower speeds
- Pierce County, WA: more DSL coverage, slower speeds
- Mason County, WA: more DSL coverage, slower speeds
- Jefferson County, WA: more DSL coverage, slower speeds
- Thurston County, WA: more DSL coverage, slower speeds
- Clallam County, WA: more DSL coverage, faster speeds
- Kittitas County, WA: more DSL coverage, slower speeds
- Chelan County, WA: less DSL coverage, slower speeds
- Douglas County, WA: more DSL coverage, faster speeds
Counties with Similar Populations
- Orange County, CA: more DSL coverage, slower speeds
- Maricopa County, AZ: more DSL coverage, slower speeds
- Los Angeles County, CA: less DSL coverage, slower speeds
- San Diego County, CA: more DSL coverage, slower speeds
- Harris County, TX: more DSL coverage, slower speeds
- Miami-Dade County, FL: more DSL coverage, slower speeds
- Cook County, IL: more DSL coverage, slower speeds
- Burlington County, NJ: less DSL coverage, slower speeds
- Jefferson County, KY: more DSL coverage, slower speeds
- Macomb County, MI: more DSL coverage, slower speeds