In Jefferson County there are 2 residential Cable providers covering 95.36% of the county. The average home can get speeds up to 1,847 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 Jefferson County, CO.
To see availability maps for all providers including fiber, cable, DSL, and more in Jefferson County, CO please click below.
Jefferson County, CO Availability Maps
Cable Internet Service Providers in Jefferson 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 Jefferson County are not shown.
Jefferson 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 Jefferson County is cable internet available?
Cable Internet Availability Key
Cable is available in 95.36% of Jefferson 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 Jefferson County above to see who has service at your home.
How fast is cable internet in Jefferson County?
The map below shows maximum cable internet speeds by area in Jefferson County.
Cable Internet Speed Key
The average Jefferson County home can get up to 1,847 Mbps on their cable internet plan. The fastest cable download speed in the county is 2,000 Mbps, which 77.33% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, 1.03% of homes can only purchase plans up to 1,000 Mbps. See the internet provider details below for info about their speed and coverage in Jefferson County.
Cable internet speeds tend to be faster in the central parts of Jefferson County, and slower in the southwest areas of the county.
Is cable the fastest internet I can get in Jefferson County?
The fastest internet for you may vary based on where in Jefferson County you live. In general, fiber competes most often with cable in the county.
- Fiber is the fastest internet type for 51.61% of Jefferson County homes.
- Cable is fastest for 44.27% of the county.
- DSL is fastest for less than 1%.
- Fixed wireless is fastest for 3.73%.
- Satellite internet may be the only option for less than 1% of Jefferson County homes.
Cable Providers in Depth
Below you'll find which TV and internet providers offer service in Jefferson County, along with details on where in Jefferson County and at what speeds.
XFINITY from Comcast Cable in Jefferson County, CO
XFINITY cable coverage
About 94.33%, or 549,854 people, have XFINITY cable internet available to them in the county. The company covers the entire Jefferson County area. XFINITY is one of the largest internet service providers internet service providers in the US, with internet service available in most of Jefferson County.
XFINITY from Comcast cable download speeds
XFINITY is above average when comparing download speeds to all other internet providers in Jefferson County. Versus other cable providers in the area, XFINITY cable is the fastest. There are 2 different maximum speeds throughout Jefferson County. The fastest plan anyone in Jefferson 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 Jefferson County customers is up to 1,856 Mbps.
Show all download speeds
- 82.0% up to 2,000.0 Mbps
- 18.0% up to 1,200.0 Mbps
XFINITY from Comcast cable upload speeds
In Jefferson 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 Jefferson 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 Jefferson 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 392 Mbps.
Show all upload speeds
- 10.3% up to 2,000.0 Mbps
- 71.7% up to 250.0 Mbps
- 18.0% up to 35.0 Mbps
TDS Cable in Jefferson County, CO
TDS cable coverage
About 4.28%, or 24,972 people, have TDS cable internet available to them in the county. The company covers the northwest, north, and west Jefferson County area. TDS is a large internet service provider internet service providers in the US, with internet service available in a very small piece of Jefferson County.
TDS cable download speeds
TDS is below average when comparing download speeds to all other internet providers in Jefferson County. Versus other cable providers in the area, TDS cable is the slowest. There are no different maximum speeds throughout Jefferson County. The fastest plan anyone in Jefferson County can order from TDS goes up to 1,000 Mbps, and all Jefferson County customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
TDS cable upload speeds
In Jefferson County download speeds tend to be faster than than upload speeds for TDS cable. Compared to other ISPs, TDS is below average where upload speeds are concerned, and the slowest compared to other Jefferson County cable providers. TDS offers no different upload speeds across the county. The fastest upload speed available to anyone from this ISP in Jefferson County is up to 20 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 20.0 Mbps
Jefferson County Cable by Area
This information is most helpful to those looking for homes or considering moving to Jefferson County or any of the areas nearby.
How does cable internet in Jefferson County compare to the rest of Colorado?
Cable internet speeds in Jefferson County are much faster versus the average speeds in Colorado: 0.00 Mbps in Colorado versus 1,847 Mbps in the county. The state has similar cable availability compared to the county. Average cable coverage in Colorado is 0.00% versus 95.36% in Jefferson County.
What zip codes have cable internet?
Cable internet coverage varies by zip code and neighborhood. Some examples in or around Jefferson 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
- Denver County, CO: more cable coverage, faster speeds
- Adams County, CO: more cable coverage, slower speeds
- Arapahoe County, CO: more cable coverage, slower speeds
- Gilpin County, CO: less cable coverage, slower speeds
- Clear Creek County, CO: less cable coverage, slower speeds
- Eagle County, CO: less cable coverage, slower speeds
- Rawlins County, KS: less cable coverage, slower speeds
- Decatur County, KS: less cable coverage, slower speeds
- Juab County, UT: less cable coverage, slower speeds
- Jewell County, KS: less cable coverage, slower speeds
Counties with Similar Populations
- Bucks County, PA: more cable coverage, slower speeds
- Jefferson County, AL: more cable coverage, slower speeds
- Summit County, OH: more cable coverage, slower speeds
- Stanislaus County, CA: less cable coverage, slower speeds
- Delaware County, PA: more cable coverage, faster speeds
- Dane County, WI: less cable coverage, slower speeds
- Volusia County, FL: more cable coverage, slower speeds
- Chester County, PA: more cable coverage, slower speeds
- Camden County, NJ: more cable coverage, faster speeds
- Bristol County, MA: more cable coverage, slower speeds