In Boulder County there is 1 residential Cable provider covering 93.00% of the county. The average home can get speeds up to 1,531 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 Cable internet providers in Boulder County, CO.
To see availability maps for all providers including fiber, cable, DSL, and more in Boulder County, CO please click below.
Boulder County, CO Availability Maps
Cable Internet Service Provider in Boulder 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 Boulder County are not shown.
Boulder 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 Boulder County is cable internet available?
Cable Internet Availability Key
Cable is available in 93.00% of Boulder County. Areas in green have cable internet service, where areas in yellow or red may not. The most widely available provider is XFINITY. Call one of the companies with service in Boulder County above to see who has service at your home.
How fast is cable internet in Boulder County?
The map below shows maximum cable internet speeds by area in Boulder County.
Cable Internet Speed Key
The average Boulder County home can get up to 1,531 Mbps on their cable internet plan. The fastest cable download speed in the county is 2,000 Mbps, which 39.11% 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 500 Mbps. See the internet provider details below for info about their speed and coverage in Boulder County.
Cable internet speeds tend to be faster in the southeast parts of Boulder County, and slower in the northwest areas of the county.
Is cable the fastest internet I can get in Boulder County?
The fastest internet for you may vary based on where in Boulder County you live. In general, fiber competes most often with cable in the county.
- Fiber is the fastest internet type for 49.67% of Boulder County homes.
- Cable is fastest for 44.75% of the county.
- DSL is fastest for less than 1%.
- Fixed wireless is fastest for 2.93%.
- Satellite internet may be the only option for 2.36% of Boulder County homes.
Cable Providers in Depth
Below you'll find which TV and internet providers offer service in Boulder County, along with details on where in Boulder County and at what speeds.
XFINITY from Comcast Cable in Boulder County, CO
XFINITY cable coverage
About 92.24%, or 305,083 people, have XFINITY cable internet available to them in the county. The company covers the entire Boulder County area. XFINITY is one of the largest internet service providers internet service providers in the US, with internet service available in most of Boulder County.
XFINITY from Comcast cable download speeds
XFINITY is above average when comparing download speeds to all other internet providers in Boulder County. Versus other cable providers in the area, XFINITY cable is the fastest. There are 2 different maximum speeds throughout Boulder County. The fastest plan anyone in Boulder County can order from XFINITY goes up to 2,000 Mbps, the slowest package only goes up to 1,200 Mbps, and the county-wide average maximum speed for Boulder County customers is up to 1,539 Mbps.
Show all download speeds
- 42.4% up to 2,000.0 Mbps
- 57.6% up to 1,200.0 Mbps
XFINITY from Comcast cable upload speeds
In Boulder County download speeds tend to be faster than than upload speeds for XFINITY cable. Compared to other ISPs, XFINITY is below average where upload speeds are concerned, and the fastest compared to other Boulder County cable providers. XFINITY offers 3 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 Boulder County is up to 2,000 Mbps. Some customers have slower plan choices, which only go up to 35 Mbps. On average, XFINITY customers can get speeds up to 483 Mbps.
Show all upload speeds
- 20.4% up to 2,000.0 Mbps
- 22.0% up to 250.0 Mbps
- 57.6% up to 35.0 Mbps
Boulder County Cable by Area
This information is most helpful to those looking for homes or considering moving to Boulder County or any of the areas nearby.
How does cable internet in Boulder County compare to the rest of Colorado?
Cable internet speeds in Boulder County are much faster versus the average speeds in Colorado: 0.00 Mbps in Colorado versus 1,531 Mbps in the county. The state has similar cable availability compared to the county. Average cable coverage in Colorado is 0.00% versus 93.00% in Boulder County.
What zip codes have cable internet?
Cable internet coverage varies by zip code and neighborhood. Some examples in or around Boulder County are shown below. You can enter any zip code here to see TV and internet providers by zip code.
What does cable 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
- Broomfield County, CO: more cable coverage, faster speeds
- Grand County, CO: less cable coverage, slower speeds
- Yuma County, CO: less cable coverage, slower speeds
- Rio Blanco County, CO: less cable coverage, slower speeds
- Harlan County, NE: less cable coverage, slower speeds
- Franklin County, NE: less cable coverage, slower speeds
- Webster County, NE: less cable coverage, slower speeds
- Thayer County, NE: less cable coverage, slower speeds
- Jefferson County, NE: less cable coverage, slower speeds
- Pawnee County, NE: less cable coverage, slower speeds
Counties with Similar Populations
- Anoka County, MN: more cable coverage, slower speeds
- Clackamas County, OR: more cable coverage, faster speeds
- Bell County, TX: less cable coverage, slower speeds
- Placer County, CA: less cable coverage, slower speeds
- Pinal County, AZ: less cable coverage, faster speeds
- Charleston County, SC: more cable coverage, slower speeds
- Cameron County, TX: more cable coverage, slower speeds
- Gloucester County, NJ: more cable coverage, faster speeds
- Cumberland County, PA: more cable coverage, faster speeds
- Rockingham County, NH: more cable coverage, faster speeds