In Jefferson County there are 5 residential Fiber providers covering 30.91% of the county. The average home can get speeds up to 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 Jefferson County, NY.
To see availability maps for all providers including fiber, cable, DSL, and more in Jefferson County, NY please click below.
Jefferson County, NY 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?
Fiber Internet Availability Key
Fiber is available in 30.91% of Jefferson County. Areas in green have fiber internet service, where areas in yellow or red may not. The most widely available provider is Westelcom. 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.
Fiber Internet Speed Key
The average Jefferson County home can get up to 987 Mbps on their fiber internet plan. The fastest fiber download speed in the county is 1,000 Mbps, which 23.96% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, 6.95% of homes can only purchase plans up to 940 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 northeast 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 24.24% of Jefferson County homes.
- Cable is fastest for 59.46% of the county.
- DSL is fastest for less than 1%.
- Fixed wireless is fastest for less than 1%.
- Satellite internet may be the only option for 15.74% 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.
Westelcom Company Fiber in Jefferson County, NY
Westelcom fiber coverage
About 17.28%, or 20,174 people, have Westelcom fiber internet available to them in the county. The company covers the south, central, northwest, southeast, and southwest Jefferson County area. Westelcom is a large internet service provider internet service providers in the US, with internet service available in a small portion of Jefferson County.
Westelcom Company fiber download speeds
Westelcom is one of the fastest when comparing download speeds to all other internet providers in Jefferson County. Versus other fiber providers in the area, Westelcom 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 Westelcom 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
Westelcom Company fiber upload speeds
In Jefferson County download speeds tend to be equal to than upload speeds for Westelcom fiber. Compared to other ISPs, Westelcom is one of the fastest where upload speeds are concerned, and one of the fastest compared to other Jefferson County fiber providers. Westelcom 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
EarthLink Fiber in Jefferson County, NY
EarthLink fiber coverage
About 9.50%, or 11,087 people, have EarthLink fiber internet available to them in the county. The company covers the north, northwest, northeast, central, west, and south Jefferson County area. EarthLink 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.
EarthLink fiber download speeds
EarthLink is above average when comparing download speeds to all other internet providers in Jefferson County. Versus other fiber providers in the area, EarthLink fiber is one of the slowest. There are no different maximum speeds throughout Jefferson County. The fastest plan anyone in Jefferson County can order from EarthLink goes up to 940 Mbps, and all Jefferson County customers can get this speed.
Show all download speeds
- 100.0% up to 940.0 Mbps
EarthLink fiber upload speeds
In Jefferson County download speeds tend to be faster than than upload speeds for EarthLink fiber. Compared to other ISPs, EarthLink is above average where upload speeds are concerned, and above average compared to other Jefferson County fiber providers. EarthLink offers no different upload speeds across the county. The fastest upload speed available to anyone from this ISP in Jefferson County is up to 880 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 880.0 Mbps
Verizon Fiber in Jefferson County, NY
Verizon fiber coverage
About 9.50%, or 11,087 people, have Verizon fiber internet available to them in the county. The company covers the north, northwest, northeast, central, west, and south Jefferson County area. Verizon 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.
Verizon fiber download speeds
Verizon is above average when comparing download speeds to all other internet providers in Jefferson County. Versus other fiber providers in the area, Verizon fiber is one of the slowest. There are no different maximum speeds throughout Jefferson County. The fastest plan anyone in Jefferson County can order from Verizon goes up to 940 Mbps, and all Jefferson County customers can get this speed.
Show all download speeds
- 100.0% up to 940.0 Mbps
Verizon fiber upload speeds
In Jefferson County download speeds tend to be faster than than upload speeds for Verizon fiber. Compared to other ISPs, Verizon is above average where upload speeds are concerned, and above average compared to other Jefferson County fiber providers. Verizon offers no different upload speeds across the county. The fastest upload speed available to anyone from this ISP in Jefferson County is up to 880 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 880.0 Mbps
TDS Fiber in Jefferson County, NY
TDS fiber coverage
About 3.42%, or 3,988 people, have TDS fiber internet available to them in the county. The company covers the west, northwest, central, and southwest 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 one of the fastest when comparing download speeds to all other internet providers in Jefferson County. Versus other fiber providers in the area, TDS 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 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 one of the fastest where upload speeds are concerned, and one of the fastest 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
Castle Cable TV Fiber in Jefferson County, NY
Castle Cable TV fiber coverage
About 3.02%, or 3,523 people, have Castle Cable TV fiber internet available to them in the county. The company covers the north and northeast Jefferson County area. Castle Cable TV is a small internet service provider internet service providers in the US, with internet service available in a very small piece of Jefferson County.
Castle Cable TV fiber download speeds
Castle Cable TV is one of the fastest when comparing download speeds to all other internet providers in Jefferson County. Versus other fiber providers in the area, Castle Cable TV 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 Castle Cable TV 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
Castle Cable TV fiber upload speeds
In Jefferson County download speeds tend to be faster than than upload speeds for Castle Cable TV fiber. Compared to other ISPs, Castle Cable TV is above average where upload speeds are concerned, and below average compared to other Jefferson County fiber providers. Castle Cable TV offers no different upload speeds across the county. The fastest upload speed available to anyone from this ISP in Jefferson County is up to 500 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 500.0 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 New York?
Fiber internet speeds in Jefferson County are much faster versus the average speeds in New York: 0.00 Mbps in New York versus 987 Mbps in the county. The state has similar fiber availability compared to the county. Average fiber coverage in New York is 0.00% versus 30.91% 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
- Essex County, NY: more fiber coverage, faster speeds
- Addison County, VT: more fiber coverage, faster speeds
- Orange County, VT: less fiber coverage, slower speeds
- Androscoggin County, ME: more fiber coverage, faster speeds
- Sagadahoc County, ME: more fiber coverage, faster speeds
- Lincoln County, ME: more fiber coverage, faster speeds
- Knox County, ME: more fiber coverage, faster speeds
- Arenac County, MI: less fiber coverage, faster speeds
- Gladwin County, MI: less fiber coverage, faster speeds
- Clare County, MI: less fiber coverage, faster speeds
Counties with Similar Populations
- Missoula County, MT: less fiber coverage, faster speeds
- Hardin County, KY: more fiber coverage, faster speeds
- Henderson County, NC: more fiber coverage, faster speeds
- Houston County, AL: more fiber coverage, faster speeds
- Jasper County, MO: less fiber coverage, faster speeds
- Albemarle County, VA: more fiber coverage, faster speeds
- Kennebec County, ME: more fiber coverage, faster speeds
- La Crosse County, WI: more fiber coverage, faster speeds
- LaPorte County, IN: more fiber coverage, faster speeds
- LaSalle County, IL: more fiber coverage, faster speeds