In Mercer Island there are 4 residential Fiber providers covering 51.74% of the city. The average home can get speeds up to 1,987 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 Mercer Island, WA.
To see availability maps for all providers including fiber, cable, DSL, and more in Mercer Island, WA please click below.
Mercer Island, WA Availability Maps
Fiber Internet Service Providers in Mercer Island
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 Mercer Island are not shown.
Mercer Island 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 Mercer Island is fiber internet available?
Fiber Internet Availability Key
Fiber is available in 51.74% of Mercer Island. Areas in green have fiber internet service, where areas in yellow or red may not. The most widely available provider is Quantum Fiber. Call one of the companies with service in Mercer Island above to see who has service at your home.
How fast is fiber internet in Mercer Island?
The map below shows maximum fiber internet speeds by area in Mercer Island.
Fiber Internet Speed Key
The average Mercer Island home can get up to 1,987 Mbps on their fiber internet plan. The fastest fiber download speed in the city is 2,000 Mbps, which 51.05% 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 Mercer Island.
Fiber internet speeds tend to be faster in the northwest parts of Mercer Island, and slower in the north areas of the city.
Is fiber the fastest internet I can get in Mercer Island?
The fastest internet for you may vary based on where in Mercer Island you live. In general, cable competes most often with fiber in the city.
- Fiber is the fastest internet type for 11.14% of Mercer Island homes.
- Cable is fastest for 88.81% of the city.
- 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 Mercer Island homes.
Fiber Providers in Depth
Below you'll find which TV and internet providers offer service in Mercer Island, along with details on where in Mercer Island and at what speeds.
Quantum Fiber Fiber in Mercer Island, WA
Quantum Fiber fiber coverage
About 46.71%, or 12,086 people, have Quantum Fiber fiber internet available to them in the city. The company covers the northwest, central, east, north, south, west, southeast, and southwest Mercer Island area. Quantum Fiber is one of the largest internet service providers internet service providers in the US, with internet service available in some of Mercer Island.
Quantum Fiber fiber download speeds
Quantum Fiber is above average when comparing download speeds to all other internet providers in Mercer Island. Versus other fiber providers in the area, Quantum Fiber fiber is above average. There are 3 different maximum speeds throughout Mercer Island. The fastest plan anyone in Mercer Island 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 Mercer Island customers is up to 1,954 Mbps.
Show all download speeds
- 95.5% up to 2,000.0 Mbps
- 3.1% up to 1,000.0 Mbps
- 1.5% up to 940.0 Mbps
Quantum Fiber fiber upload speeds
In Mercer Island 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 below average compared to other Mercer Island 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 Mercer Island 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 999 Mbps.
Show all upload speeds
- 98.5% up to 1,000.0 Mbps
- 1.5% up to 940.0 Mbps
Centurylink Fiber in Mercer Island, WA
Centurylink fiber coverage
About 38.51%, or 9,964 people, have Centurylink fiber internet available to them in the city. The company covers the northwest, central, east, west, north, south, southeast, and southwest Mercer Island area. Centurylink is one of the largest internet service providers internet service providers in the US, with internet service available in some of Mercer Island.
Centurylink fiber download speeds
Centurylink is average when comparing download speeds to all other internet providers in Mercer Island. Versus other fiber providers in the area, Centurylink fiber is the slowest. There are 5 different maximum speeds throughout Mercer Island. The fastest plan anyone in Mercer Island can order from Centurylink goes up to 1,000 Mbps, the slowest package only goes up to 40 Mbps, and the city-wide average maximum speed for Mercer Island customers is up to 949 Mbps.
Show all download speeds
- 34.0% up to 1,000.0 Mbps
- 64.6% up to 940.0 Mbps
- 0.4% up to 200.0 Mbps
- 0.4% up to 80.0 Mbps
- 0.6% up to 40.0 Mbps
Centurylink fiber upload speeds
In Mercer Island download speeds tend to be faster than than upload speeds for Centurylink fiber. Compared to other ISPs, Centurylink is above average where upload speeds are concerned, and the slowest compared to other Mercer Island fiber providers. Centurylink offers 5 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 Mercer Island is up to 1,000 Mbps. Some customers have slower plan choices, which only go up to 5.0 Mbps. On average, Centurylink customers can get speeds up to 814 Mbps.
Show all upload speeds
- 34.0% up to 1,000.0 Mbps
- 46.5% up to 940.0 Mbps
- 18.5% up to 200.0 Mbps
- 0.4% up to 10.0 Mbps
- 0.6% up to 5.0 Mbps
Astound Broadband Fiber in Mercer Island, WA
Astound Broadband fiber coverage
About 11.14%, or 2,882 people, have Astound Broadband fiber internet available to them in the city. The company covers the northwest and north Mercer Island 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 Mercer Island.
Astound Broadband fiber download speeds
Astound Broadband is one of the fastest when comparing download speeds to all other internet providers in Mercer Island. Versus other fiber providers in the area, Astound Broadband fiber is one of the fastest. There are no different maximum speeds throughout Mercer Island. The fastest plan anyone in Mercer Island can order from Astound Broadband goes up to 2,000 Mbps, and all Mercer Island customers can get this speed.
Show all download speeds
- 100.0% up to 2,000.0 Mbps
Astound Broadband fiber upload speeds
In Mercer Island download speeds tend to be equal to 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 Mercer Island fiber providers. Astound Broadband offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Mercer Island is up to 2,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 2,000.0 Mbps
XFINITY from Comcast Fiber in Mercer Island, WA
XFINITY fiber coverage
About 2.74%, or 708 people, have XFINITY fiber internet available to them in the city. The company covers the northwest Mercer Island area. XFINITY is one of the largest internet service providers internet service providers in the US, with internet service available in a very small piece of Mercer Island.
XFINITY from Comcast fiber download speeds
XFINITY is one of the fastest when comparing download speeds to all other internet providers in Mercer Island. Versus other fiber providers in the area, XFINITY fiber is one of the fastest. There are no different maximum speeds throughout Mercer Island. The fastest plan anyone in Mercer Island can order from XFINITY goes up to 2,000 Mbps, and all Mercer Island customers can get this speed.
Show all download speeds
- 100.0% up to 2,000.0 Mbps
XFINITY from Comcast fiber upload speeds
In Mercer Island download speeds tend to be equal to than upload speeds for XFINITY fiber. Compared to other ISPs, XFINITY is one of the fastest where upload speeds are concerned, and one of the fastest compared to other Mercer Island fiber providers. XFINITY offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Mercer Island is up to 2,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 2,000.0 Mbps
Mercer Island Fiber by Area
This information is most helpful to those looking for homes or considering moving to Mercer Island or any of the areas nearby.
How does fiber internet in Mercer Island compare to the rest of Washington?
Fiber internet speeds in Mercer Island are much faster versus the average speeds in Washington: 0.00 Mbps in Washington versus 1,987 Mbps in the city. The state has similar fiber availability compared to the city. Average fiber coverage in Washington is 0.00% versus 51.74% in Mercer Island.
What zip codes have fiber internet?
Fiber internet coverage varies by zip code and neighborhood. Some examples in or around Mercer Island 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
- Beaux Arts Village, WA: more fiber coverage, slower speeds
- Newcastle, WA: less fiber coverage, slower speeds
- Bellevue, WA: less fiber coverage, faster speeds
- Medina, WA: less fiber coverage, slower speeds
- Clyde Hill, WA: less fiber coverage, slower speeds
- Bryn Mawr-Skyway, WA: more fiber coverage, faster speeds
- Yarrow Point, WA: more fiber coverage, faster speeds
- Boulevard Park, WA: more fiber coverage, slower speeds
- Seattle, WA: more fiber coverage, faster speeds
- Renton, WA: less fiber coverage, faster speeds
Cities with Similar Populations
- Allendale, MI: more fiber coverage, slower speeds
- Yorkville, IL: more fiber coverage, faster speeds
- Yelm, WA: less fiber coverage, slower speeds
- West Hempstead, NY: more fiber coverage, faster speeds
- Wayne, PA: more fiber coverage, slower speeds
- Waukee, IA: more fiber coverage, slower speeds
- Watertown, WI: less fiber coverage, faster speeds
- Wallingford, CT: more fiber coverage, faster speeds
- Wakefield, MA: more fiber coverage, slower speeds
- Waianae, HI: more fiber coverage, faster speeds