In Theresa there are 3 residential Fiber providers covering 39.57% of the city. The average home can get speeds up to 942 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 Theresa, NY.
To see availability maps for all providers including fiber, cable, DSL, and more in Theresa, NY please click below.
Fiber Internet Service Providers in Theresa
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 Theresa are not shown.
Theresa 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 Theresa is fiber internet available?
Fiber Internet Availability Key
Fiber is available in 39.57% of Theresa. Areas in green have fiber internet service, where areas in yellow or red may not. The most widely available provider is Earthlink. Call one of the companies with service in Theresa above to see who has service at your home.
How fast is fiber internet in Theresa?
The map below shows maximum fiber internet speeds by area in Theresa.
Fiber Internet Speed Key
The average Theresa home can get up to 942 Mbps on their fiber internet plan. The fastest fiber download speed in the city is 1,000 Mbps, which 1.49% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, 38.08% of homes can only purchase plans up to 940 Mbps. See the internet provider details below for info about their speed and coverage in Theresa.
Fiber internet speeds tend to be faster in the northwest parts of Theresa, and slower in the south areas of the city.
Is fiber the fastest internet I can get in Theresa?
The fastest internet for you may vary based on where in Theresa you live. In general, cable competes most often with fiber in the city.
- Fiber is the fastest internet type for 4.82% of Theresa homes.
- Cable is fastest for 92.49% of the city.
- DSL is fastest for less than 1%.
- Fixed wireless is fastest for less than 1%.
- Satellite internet may be the only option for 2.69% of Theresa homes.
Fiber Providers in Depth
Below you'll find which TV and internet providers offer service in Theresa, along with details on where in Theresa and at what speeds.
EarthLink Fiber in Theresa, NY
EarthLink fiber coverage
About 38.08%, or 1,019 people, have EarthLink fiber internet available to them in the city. The company covers the south, northeast, central, east, west, northwest, north, and southwest Theresa area. EarthLink is one of the largest internet service providers internet service providers in the US, with internet service available in some of Theresa.
EarthLink fiber download speeds
EarthLink is above average when comparing download speeds to all other internet providers in Theresa. Versus other fiber providers in the area, EarthLink fiber is one of the slowest. There are no different maximum speeds throughout Theresa. The fastest plan anyone in Theresa can order from EarthLink goes up to 940 Mbps, and all Theresa customers can get this speed.
Show all download speeds
- 100.0% up to 940.0 Mbps
EarthLink fiber upload speeds
In Theresa download speeds tend to be faster than than upload speeds for EarthLink fiber. Compared to other ISPs, EarthLink is one of the fastest where upload speeds are concerned, and one of the fastest compared to other Theresa fiber providers. EarthLink offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Theresa 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 Theresa, NY
Verizon fiber coverage
About 38.08%, or 1,019 people, have Verizon fiber internet available to them in the city. The company covers the south, northeast, central, east, west, northwest, north, and southwest Theresa area. Verizon is one of the largest internet service providers internet service providers in the US, with internet service available in some of Theresa.
Verizon fiber download speeds
Verizon is above average when comparing download speeds to all other internet providers in Theresa. Versus other fiber providers in the area, Verizon fiber is one of the slowest. There are no different maximum speeds throughout Theresa. The fastest plan anyone in Theresa can order from Verizon goes up to 940 Mbps, and all Theresa customers can get this speed.
Show all download speeds
- 100.0% up to 940.0 Mbps
Verizon fiber upload speeds
In Theresa download speeds tend to be faster than than upload speeds for Verizon fiber. Compared to other ISPs, Verizon is one of the fastest where upload speeds are concerned, and one of the fastest compared to other Theresa fiber providers. Verizon offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Theresa is up to 880 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 880.0 Mbps
Castle Cable TV Fiber in Theresa, NY
Castle Cable TV fiber coverage
About 1.49%, or 40 people, have Castle Cable TV fiber internet available to them in the city. The company covers the northwest Theresa 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 Theresa.
Castle Cable TV fiber download speeds
Castle Cable TV is one of the fastest when comparing download speeds to all other internet providers in Theresa. Versus other fiber providers in the area, Castle Cable TV fiber is the fastest. There are no different maximum speeds throughout Theresa. The fastest plan anyone in Theresa can order from Castle Cable TV goes up to 1,000 Mbps, and all Theresa customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
Castle Cable TV fiber upload speeds
In Theresa 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 the slowest compared to other Theresa fiber providers. Castle Cable TV offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Theresa is up to 500 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 500.0 Mbps
Theresa Fiber by Area
This information is most helpful to those looking for homes or considering moving to Theresa or any of the areas nearby.
How does fiber internet in Theresa compare to the rest of New York?
Fiber internet speeds in Theresa are much faster versus the average speeds in New York: 0.00 Mbps in New York versus 942 Mbps in the city. The state has similar fiber availability compared to the city. Average fiber coverage in New York is 0.00% versus 39.57% in Theresa.
What zip codes have fiber internet?
Fiber internet coverage varies by zip code and neighborhood. Some examples in or around Theresa 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
- Philadelphia, NY: less fiber coverage, slower speeds
- Orleans Four Corners, NY: more fiber coverage, slower speeds
- Plessis, NY: more fiber coverage, faster speeds
- Oxbow, NY: more fiber coverage, faster speeds
- Antwerp, NY: less fiber coverage, slower speeds
- Westminster Park, NY: more fiber coverage, faster speeds
- Redwood, NY: more fiber coverage, faster speeds
- Omar, NY: more fiber coverage, slower speeds
- Evans Mills, NY: less fiber coverage, slower speeds
- La Fargeville, NY: more fiber coverage, faster speeds
Cities with Similar Populations
- Bates City, MO: more fiber coverage, faster speeds
- Belcourt, ND: more fiber coverage, faster speeds
- Bowman, GA: more fiber coverage, slower speeds
- Burr Oak, MI: less fiber coverage, faster speeds
- Roper, NC: more fiber coverage, faster speeds
- Moorcroft, WY: less fiber coverage, faster speeds
- Mount Crawford, VA: less fiber coverage, faster speeds
- Neoga, IL: more fiber coverage, faster speeds
- North High Shoals, GA: more fiber coverage, faster speeds
- Pala, CA: less fiber coverage, faster speeds