In Boulder there are 2 residential Fiber providers covering 47.05% of the city. The average home can get speeds up to 1,776 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 Boulder, CO.
To see availability maps for all providers including fiber, cable, DSL, and more in Boulder, CO please click below.
Fiber Internet Service Providers in Boulder
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 Boulder are not shown.
Boulder 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 Boulder is fiber internet available?
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Fiber is available in 47.05% of Boulder. 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 Boulder above to see who has service at your home.
How fast is fiber internet in Boulder?
The map below shows maximum fiber internet speeds by area in Boulder.
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The average Boulder home can get up to 1,776 Mbps on their fiber internet plan. The fastest fiber download speed in the city is 10,000 Mbps, which less than 1% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, 2.67% of homes can only purchase plans up to 940 Mbps. See the internet provider details below for info about their speed and coverage in Boulder.
Fiber internet speeds tend to be faster in the west parts of Boulder, and slower in the northeast areas of the city.
Is fiber the fastest internet I can get in Boulder?
The fastest internet for you may vary based on where in Boulder you live. In general, cable competes most often with fiber in the city.
- Fiber is the fastest internet type for 35.89% of Boulder homes.
- Cable is fastest for 55.57% of the city.
- DSL is fastest for less than 1%.
- Fixed wireless is fastest for 2.03%.
- Satellite internet may be the only option for 6.32% of Boulder homes.
Fiber Providers in Depth
Below you'll find which TV and internet providers offer service in Boulder, along with details on where in Boulder and at what speeds.
Centurylink Fiber in Boulder, CO
Centurylink fiber coverage
About 44.01%, or 52,229 people, have Centurylink fiber internet available to them in the city. The company covers the entire Boulder area. Centurylink is one of the largest internet service providers internet service providers in the US, with internet service available in some of Boulder.
Centurylink fiber download speeds
Centurylink is above average when comparing download speeds to all other internet providers in Boulder. Versus other fiber providers in the area, Centurylink fiber is the slowest. There are 6 different maximum speeds throughout Boulder. The fastest plan anyone in Boulder can order from Centurylink goes up to 1,000 Mbps, the slowest package only goes up to 10 Mbps, and the city-wide average maximum speed for Boulder customers is up to 973 Mbps.
Show all download speeds
- 71.0% up to 1,000.0 Mbps
- 27.7% up to 940.0 Mbps
- 0.6% up to 200.0 Mbps
- 0.5% up to 100.0 Mbps
- 0.1% up to 40.0 Mbps
- 0.0% up to 10.0 Mbps
Centurylink fiber upload speeds
In Boulder 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 below average compared to other Boulder fiber providers. Centurylink offers 7 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 Boulder is up to 1,000 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, Centurylink customers can get speeds up to 939 Mbps.
Show all upload speeds
- 71.0% up to 1,000.0 Mbps
- 23.1% up to 940.0 Mbps
- 5.2% up to 200.0 Mbps
- 0.5% up to 100.0 Mbps
- 0.1% up to 40.0 Mbps
- 0.0% up to 10.0 Mbps
- 0.0% up to 1.0 Mbps
Quantum Fiber Fiber in Boulder, CO
Quantum Fiber fiber coverage
About 42.98%, or 51,005 people, have Quantum Fiber fiber internet available to them in the city. The company covers the entire Boulder area. Quantum Fiber is one of the largest internet service providers internet service providers in the US, with internet service available in some of Boulder.
Quantum Fiber fiber download speeds
Quantum Fiber is above average when comparing download speeds to all other internet providers in Boulder. Versus other fiber providers in the area, Quantum Fiber fiber is below average. There are 4 different maximum speeds throughout Boulder. The fastest plan anyone in Boulder can order from Quantum Fiber goes up to 2,000 Mbps, the slowest package only goes up to 500 Mbps, and the city-wide average maximum speed for Boulder customers is up to 1,800 Mbps.
Show all download speeds
- 81.5% up to 2,000.0 Mbps
- 1.8% up to 1,000.0 Mbps
- 15.5% up to 940.0 Mbps
- 1.1% up to 500.0 Mbps
Quantum Fiber fiber upload speeds
In Boulder 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 Boulder fiber providers. Quantum Fiber offers 3 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 Boulder is up to 1,000 Mbps. Some customers have slower plan choices, which only go up to 500 Mbps. On average, Quantum Fiber customers can get speeds up to 985 Mbps.
Show all upload speeds
- 83.4% up to 1,000.0 Mbps
- 15.5% up to 940.0 Mbps
- 1.1% up to 500.0 Mbps
Boulder Fiber by Area
This information is most helpful to those looking for homes or considering moving to Boulder or any of the areas nearby.
How does fiber internet in Boulder compare to the rest of Colorado?
Fiber internet speeds in Boulder are much faster versus the average speeds in Colorado: 0.00 Mbps in Colorado versus 1,776 Mbps in the city. The state has similar fiber availability compared to the city. Average fiber coverage in Colorado is 0.00% versus 47.05% in Boulder.
What zip codes have fiber internet?
Fiber internet coverage varies by zip code and neighborhood. Some examples in or around Boulder 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
- Gunbarrel, CO: less fiber coverage, slower speeds
- Eldorado Springs, CO: less fiber coverage, slower speeds
- Louisville, CO: less fiber coverage, slower speeds
- Superior, CO: less fiber coverage, slower speeds
- Lafayette, CO: less fiber coverage, slower speeds
- Coal Creek, CO: more fiber coverage, slower speeds
- Pinecliffe, CO: more fiber coverage, slower speeds
- Erie, CO: more fiber coverage, faster speeds
- Broomfield, CO: less fiber coverage, slower speeds
- Nederland, CO: less fiber coverage, faster speeds
Cities with Similar Populations
- Denver, CO: more fiber coverage, faster speeds
- Daytona Beach, FL: more fiber coverage, faster speeds
- Cordova, TN: more fiber coverage, faster speeds
- Dallas, GA: more fiber coverage, faster speeds
- Denham Springs, LA: more fiber coverage, faster speeds
- Concord, NC: more fiber coverage, faster speeds
- Compton, CA: less fiber coverage, faster speeds
- Dallas, TX: more fiber coverage, faster speeds
- Danbury, CT: more fiber coverage, faster speeds
- Detroit, MI: less fiber coverage, faster speeds