In Jefferson County there are 5 residential Fiber providers covering 59.32% of the county. The average home can get speeds up to 4,650 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 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
Fiber 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 fiber internet available?
100%
Colorblind friendly
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Fiber is available in 59.32% of Jefferson County. 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 Jefferson County above to see who has service at your home.
How fast is fiber internet in Jefferson County?
The map below shows maximum fiber internet speeds by area in Jefferson County.
1000 Mbps+
Colorblind friendly
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The average Jefferson County home can get up to 4,650 Mbps on their fiber internet plan. The fastest fiber download speed in the county is 8,000 Mbps, which 27.26% 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 25 Mbps. See the internet provider details below for info about their speed and coverage in Jefferson County.
Fiber internet speeds tend to be faster in the south parts of Jefferson County, and slower in the northwest areas of the county.
Is fiber 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, cable competes most often with fiber 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.
Fiber 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.
Quantum Fiber Fiber in Jefferson County, CO
Quantum Fiber fiber coverage
About 46.41%, or 270,524 people, have Quantum Fiber fiber internet available to them in the county. The company covers the entire Jefferson County area. Quantum Fiber is one of the largest internet service providers internet service providers in the US, with internet service available in some of Jefferson County.
Quantum Fiber fiber download speeds
Quantum Fiber is above average when comparing download speeds to all other internet providers in Jefferson County. Versus other fiber providers in the area, Quantum Fiber fiber is above average. There are 4 different maximum speeds throughout Jefferson County. The fastest plan anyone in Jefferson County can order from Quantum Fiber goes up to 8,000 Mbps, the slowest package only goes up to 940 Mbps, and the county-wide average maximum speed for Jefferson County customers is up to 3,665 Mbps.
Show all download speeds
- 29.2% up to 8,000.0 Mbps
- 62.7% up to 2,000.0 Mbps
- 2.4% up to 1,000.0 Mbps
- 5.7% up to 940.0 Mbps
Quantum Fiber fiber upload speeds
In Jefferson County 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 above average compared to other Jefferson County fiber providers. Quantum Fiber 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 8,000 Mbps. Some customers have slower plan choices, which only go up to 940 Mbps. On average, Quantum Fiber customers can get speeds up to 3,038 Mbps.
Show all upload speeds
- 29.2% up to 8,000.0 Mbps
- 65.1% up to 1,000.0 Mbps
- 5.7% up to 940.0 Mbps
Centurylink Fiber in Jefferson County, CO
Centurylink fiber coverage
About 28.06%, or 163,588 people, have Centurylink fiber internet available to them in the county. The company covers the entire Jefferson County area. Centurylink is one of the largest internet service providers internet service providers in the US, with internet service available in a small portion of Jefferson County.
Centurylink fiber download speeds
Centurylink is below average when comparing download speeds to all other internet providers in Jefferson County. Versus other fiber providers in the area, Centurylink fiber is below average. There are 9 different maximum speeds throughout Jefferson County. The fastest plan anyone in Jefferson County can order from Centurylink goes up to 2,000 Mbps, the slowest package only goes up to 10 Mbps, and the county-wide average maximum speed for Jefferson County customers is up to 939 Mbps.
Show all download speeds
- 0.0% up to 2,000.0 Mbps
- 45.5% up to 1,000.0 Mbps
- 50.5% up to 940.0 Mbps
- 0.7% up to 500.0 Mbps
- 1.7% up to 200.0 Mbps
- 1.0% up to 100.0 Mbps
- 0.0% up to 80.0 Mbps
- 0.3% up to 40.0 Mbps
- 0.1% up to 10.0 Mbps
Centurylink fiber upload speeds
In Jefferson County download speeds tend to be faster than than upload speeds for Centurylink fiber. Compared to other ISPs, Centurylink is below average where upload speeds are concerned, and below average compared to other Jefferson County fiber providers. Centurylink offers 12 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 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 891 Mbps.
Show all upload speeds
- 45.6% up to 1,000.0 Mbps
- 44.2% up to 940.0 Mbps
- 0.5% up to 500.0 Mbps
- 7.9% up to 200.0 Mbps
- 1.3% up to 100.0 Mbps
- 0.0% up to 50.0 Mbps
- 0.0% up to 40.0 Mbps
- 0.0% up to 20.0 Mbps
- 0.1% up to 10.0 Mbps
- 0.2% up to 5.0 Mbps
- 0.0% up to 3.0 Mbps
- 0.1% up to 1.0 Mbps
BAM Broadband Fiber in Jefferson County, CO
BAM Broadband fiber coverage
About 12.55%, or 73,172 people, have BAM Broadband fiber internet available to them in the county. The company covers the south, southeast, and southwest Jefferson County area. BAM Broadband is a large internet service provider internet service providers in the US, with internet service available in a very small piece of Jefferson County.
BAM Broadband fiber download speeds
BAM Broadband is one of the fastest when comparing download speeds to all other internet providers in Jefferson County. Versus other fiber providers in the area, BAM Broadband fiber is one of the fastest. There are no different maximum speeds throughout Jefferson County. The fastest plan anyone in Jefferson County can order from BAM Broadband goes up to 8,000 Mbps, and all Jefferson County customers can get this speed.
Show all download speeds
- 100.0% up to 8,000.0 Mbps
BAM Broadband fiber upload speeds
In Jefferson County download speeds tend to be equal to than upload speeds for BAM Broadband fiber. Compared to other ISPs, BAM Broadband is one of the fastest where upload speeds are concerned, and one of the fastest compared to other Jefferson County fiber providers. BAM Broadband offers no different upload speeds across the county. The fastest upload speed available to anyone from this ISP in Jefferson County is up to 8,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 8,000.0 Mbps
Google Fiber Fiber in Jefferson County, CO
Google Fiber fiber coverage
About 4.37%, or 25,489 people, have Google Fiber fiber internet available to them in the county. The company covers the east, central, southeast, west, and south Jefferson County area. Google Fiber is one of the largest internet service providers internet service providers in the US, with internet service available in a very small piece of Jefferson County.
Google Fiber fiber download speeds
Google Fiber is one of the fastest when comparing download speeds to all other internet providers in Jefferson County. Versus other fiber providers in the area, Google Fiber fiber is one of the fastest. There are no different maximum speeds throughout Jefferson County. The fastest plan anyone in Jefferson County can order from Google Fiber goes up to 8,000 Mbps, and all Jefferson County customers can get this speed.
Show all download speeds
- 100.0% up to 8,000.0 Mbps
Google Fiber fiber upload speeds
In Jefferson County download speeds tend to be equal to than upload speeds for Google Fiber fiber. Compared to other ISPs, Google Fiber is one of the fastest where upload speeds are concerned, and one of the fastest compared to other Jefferson County fiber providers. Google Fiber offers no different upload speeds across the county. The fastest upload speed available to anyone from this ISP in Jefferson County is up to 8,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 8,000.0 Mbps
TDS Fiber in Jefferson County, CO
TDS fiber coverage
About 2.12%, or 12,357 people, have TDS fiber internet available to them in the county. The company covers the northwest, northeast, and north 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 fiber download speeds
TDS is below average when comparing download speeds to all other internet providers in Jefferson County. Versus other fiber providers in the area, TDS fiber is below average. 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 fiber upload speeds
In Jefferson County download speeds tend to be equal to than upload speeds for TDS fiber. Compared to other ISPs, TDS is below average where upload speeds are concerned, and below average compared to other Jefferson County fiber 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 1,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 1,000.0 Mbps
Jefferson County Fiber 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 fiber internet in Jefferson County compare to the rest of Colorado?
Fiber internet speeds in Jefferson County are much faster versus the average speeds in Colorado: 0.00 Mbps in Colorado versus 4,650 Mbps in the county. The state has similar fiber availability compared to the county. Average fiber coverage in Colorado is 0.00% versus 59.32% in Jefferson County.
What zip codes have fiber internet?
Fiber 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 fiber 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 fiber coverage, slower speeds
- Adams County, CO: less fiber coverage, slower speeds
- Arapahoe County, CO: less fiber coverage, slower speeds
- Gilpin County, CO: more fiber coverage, slower speeds
- Clear Creek County, CO: less fiber coverage, faster speeds
- Eagle County, CO: less fiber coverage, slower speeds
- Cheyenne County, KS: less fiber coverage, slower speeds
- Rawlins County, KS: less fiber coverage, slower speeds
- Decatur County, KS: less fiber coverage, slower speeds
- Norton County, KS: more fiber coverage, slower speeds
Counties with Similar Populations
- Bucks County, PA: more fiber coverage, slower speeds
- Jefferson County, AL: more fiber coverage, faster speeds
- Summit County, OH: more fiber coverage, slower speeds
- Stanislaus County, CA: less fiber coverage, slower speeds
- Delaware County, PA: more fiber coverage, slower speeds
- Dane County, WI: more fiber coverage, slower speeds
- Volusia County, FL: more fiber coverage, faster speeds
- Chester County, PA: more fiber coverage, slower speeds
- Camden County, NJ: more fiber coverage, slower speeds
- Bristol County, MA: less fiber coverage, slower speeds