In Castleton there are 10 residential internet providers covering 98.66% of the city. The average home can get speeds up to 1,911 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.
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10 Internet Service Providers in Castleton
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 Castleton are not shown.
Castleton 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
Availability maps for all providers in Castleton
Using the dropdown below, please select a provider. Green indicates nearly all homes have service, red indicates few homes have service, and blank indicates no service.
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Internet service is available in 98.66% of Castleton. Using our interactive availability map, you can compare service areas for different providers, we include fiber, cable, DSL, or fixed wireless internet service for all providers who offer it. You will notice that some providers might be listed multiple times for each service. If you find no providers cover the location you're looking at, you can opt for satellite service. The most widely available provider is Fidium. Now you can call companies in Castleton with more confidence that they might be available.
How fast are internet speeds in Castleton?
The map below shows maximum internet speeds by area in Castleton.
Internet Speed Key
The average Castleton home can get up to 1,911 Mbps on their internet plan. For most people, the fastest download speed in the city is 2,000 Mbps, which 88.47% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, 2.99% 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 Castleton.
Internet speeds tend to be faster in the south parts of Castleton, and slower in the north areas of the city.
What type of internet should I choose in Castleton?
The fastest internet for you may vary based on where in Castleton you live. If speed is your main concern, fiber will be the fastest internet in the city.
- Fiber is the fastest internet type for 91.46% of Castleton homes.
- Cable is fastest for 7.21% 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 1.34% of Castleton homes.
Internet Market Health in Castleton
Internet Competition Key
The map shows how competitive the Castleton internet service market is. Areas in green have more alternatives, areas in yellow have a few choices, and areas in red may have only one provider. More competition usually means faster speeds and better prices for you, the customer.
Below are quick facts on internet competition and market health in Castleton based on what connections the average home has availabile:
- Average number of internet service providers to a home: 5.3 (healthy)
- Average types of service (fiber, cable, DSL, etc): 3.2 (very healthy)
- Average providers with broadband (25 Mbps+) speeds: 4.7 (healthy)
Overall, competition is healthy.
Castleton internet customers have the ability to buy internet service from 2 to 8 different providers, depending on where they live. For different types of service, Castleton homes have between 2 and 4 options. The type(s) of service available are fixed wireless, fiber, cable, and dsl, though these may vary depending on the region within the city.
When it comes to broadband download speeds faster than 25 Mbps, the situation is worse. Castleton internet customers who want faster speeds have between 1 and 8 choices of companies offering speeds up to or over 25 Mbps.
More internet companies with faster speeds means fewer monopolies and better prices for customers. In promoting a free market for internet, Castleton is doing better than most.
TV & Internet Providers in Depth
Below you'll find which TV and internet providers offer service in Castleton, along with details on where in Castleton and at what speeds.
XFINITY from Comcast Cable in Castleton, VT
XFINITY cable coverage
About 92.76%, or 2,639 people, have XFINITY cable internet available to them in the city. The company covers the entire Castleton area. XFINITY is one of the largest internet service providers internet service providers in the US, with internet service available in most of Castleton.
XFINITY from Comcast cable download speeds
XFINITY is above average when comparing download speeds to all other internet providers in Castleton. Versus other cable providers in the area, XFINITY cable is the fastest. There are 2 different maximum speeds throughout Castleton. The fastest plan anyone in Castleton can order from XFINITY goes up to 2,000 Mbps, the slowest package only goes up to 1,200 Mbps, and the city-wide average maximum speed for Castleton customers is up to 1,216 Mbps.
Show all download speeds
- 2.0% up to 2,000.0 Mbps
- 98.0% up to 1,200.0 Mbps
XFINITY from Comcast cable upload speeds
In Castleton 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 Castleton cable providers. XFINITY offers 2 different upload speeds across the city, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in Castleton is up to 250 Mbps. Some customers have slower plan choices, which only go up to 35 Mbps. On average, XFINITY customers can get speeds up to 39 Mbps.
Show all upload speeds
- 2.0% up to 250.0 Mbps
- 98.0% up to 35.0 Mbps
Fidium Fiber Fiber in Castleton, VT
Fidium fiber coverage
About 88.47%, or 2,517 people, have Fidium fiber internet available to them in the city. The company covers the south, southwest, central, east, west, northeast, southeast, and northwest Castleton area. Fidium is one of the largest internet service providers internet service providers in the US, with internet service available in most of Castleton.
Fidium Fiber fiber download speeds
Fidium is the fastest when comparing download speeds to all other internet providers in Castleton. Versus other fiber providers in the area, Fidium fiber is the fastest. There are no different maximum speeds throughout Castleton. The fastest plan anyone in Castleton can order from Fidium goes up to 2,000 Mbps, and all Castleton customers can get this speed.
Show all download speeds
- 100.0% up to 2,000.0 Mbps
Fidium Fiber fiber upload speeds
In Castleton download speeds tend to be equal to than upload speeds for Fidium fiber. Compared to other ISPs, Fidium is the fastest where upload speeds are concerned, and the fastest compared to other Castleton fiber providers. Fidium offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Castleton is up to 2,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 2,000.0 Mbps
Fidium Fiber DSL in Castleton, VT
Fidium DSL coverage
About 24.29%, or 691 people, have Fidium DSL internet available to them in the city. The company covers the southwest, central, north, east, northeast, south, and southeast Castleton area. Fidium is one of the largest internet service providers internet service providers in the US, with internet service available in a small portion of Castleton.
Fidium Fiber DSL download speeds
Fidium is the slowest when comparing download speeds to all other internet providers in Castleton. Versus other DSL providers in the area, Fidium DSL is the fastest. There are 2 different maximum speeds throughout Castleton. The fastest plan anyone in Castleton can order from Fidium goes up to 60 Mbps, the slowest package only goes up to 10 Mbps, and the city-wide average maximum speed for Castleton customers is up to 16 Mbps.
Show all download speeds
- 11.3% up to 60.0 Mbps
- 88.7% up to 10.0 Mbps
Fidium Fiber DSL upload speeds
In Castleton download speeds tend to be faster than than upload speeds for Fidium DSL. Compared to other ISPs, Fidium is the slowest where upload speeds are concerned, and the fastest compared to other Castleton DSL providers. Fidium offers 2 different upload speeds across the city, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in Castleton is up to 10 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, Fidium customers can get speeds up to 2.0 Mbps.
Show all upload speeds
- 11.3% up to 10.0 Mbps
- 88.7% up to 1.0 Mbps
Ontario & Trumansburg Telephone Companies Fiber in Castleton, VT
OTTCTel fiber coverage
About 11.04%, or 314 people, have OTTCTel fiber internet available to them in the city. The company covers the north, northeast, and northwest Castleton area. OTTCTel is a large internet service provider internet service providers in the US, with internet service available in a very small piece of Castleton.
Ontario & Trumansburg Telephone Companies fiber download speeds
OTTCTel is above average when comparing download speeds to all other internet providers in Castleton. Versus other fiber providers in the area, OTTCTel fiber is the slowest. There are no different maximum speeds throughout Castleton. The fastest plan anyone in Castleton can order from OTTCTel goes up to 1,000 Mbps, and all Castleton customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
Ontario & Trumansburg Telephone Companies fiber upload speeds
In Castleton download speeds tend to be equal to than upload speeds for OTTCTel fiber. Compared to other ISPs, OTTCTel is above average where upload speeds are concerned, and the slowest compared to other Castleton fiber providers. OTTCTel offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Castleton is up to 1,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 1,000.0 Mbps
VTel Wireless Fixed Wireless in Castleton, VT
VTel Wireless fixed wireless coverage
About 98.45%, or 2,801 people, have VTel Wireless fixed wireless internet available to them in the city. The company covers the entire Castleton area. VTel Wireless is a large internet service provider internet service providers in the US, with internet service available in most of Castleton.
VTel Wireless fixed wireless download speeds
VTel Wireless is below average when comparing download speeds to all other internet providers in Castleton. Versus other fixed wireless providers in the area, VTel Wireless fixed wireless is the slowest. There are 2 different maximum speeds throughout Castleton. The fastest plan anyone in Castleton can order from VTel Wireless goes up to 25 Mbps, the slowest package only goes up to 10 Mbps, and the city-wide average maximum speed for Castleton customers is up to 19 Mbps.
Show all download speeds
- 58.7% up to 25.0 Mbps
- 41.3% up to 10.0 Mbps
VTel Wireless fixed wireless upload speeds
In Castleton download speeds tend to be faster than than upload speeds for VTel Wireless fixed wireless. Compared to other ISPs, VTel Wireless is below average where upload speeds are concerned, and the slowest compared to other Castleton fixed wireless providers. VTel Wireless offers 2 different upload speeds across the city, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in Castleton is up to 3.0 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, VTel Wireless customers can get speeds up to 2.2 Mbps.
Show all upload speeds
- 58.7% up to 3.0 Mbps
- 41.3% up to 1.0 Mbps
T-Mobile Home Internet Fixed Wireless in Castleton, VT
T-Mobile Home Internet fixed wireless coverage
About 90.47%, or 2,574 people, have T-Mobile Home Internet fixed wireless internet available to them in the city. The company covers the entire Castleton area. T-Mobile Home Internet is one of the largest internet service providers internet service providers in the US, with internet service available in most of Castleton.
T-Mobile Home Internet fixed wireless download speeds
T-Mobile Home Internet is below average when comparing download speeds to all other internet providers in Castleton. Versus other fixed wireless providers in the area, T-Mobile Home Internet fixed wireless is average. There are 2 different maximum speeds throughout Castleton. The fastest plan anyone in Castleton can order from T-Mobile Home Internet goes up to 100 Mbps, the slowest package only goes up to 25 Mbps, and the city-wide average maximum speed for Castleton customers is up to 81 Mbps.
Show all download speeds
- 74.3% up to 100.0 Mbps
- 25.7% up to 25.0 Mbps
T-Mobile Home Internet fixed wireless upload speeds
In Castleton download speeds tend to be faster than than upload speeds for T-Mobile Home Internet fixed wireless. Compared to other ISPs, T-Mobile Home Internet is below average where upload speeds are concerned, and above average compared to other Castleton fixed wireless providers. T-Mobile Home Internet offers 2 different upload speeds across the city, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in Castleton is up to 20 Mbps. Some customers have slower plan choices, which only go up to 3.0 Mbps. On average, T-Mobile Home Internet customers can get speeds up to 16 Mbps.
Show all upload speeds
- 74.3% up to 20.0 Mbps
- 25.7% up to 3.0 Mbps
EarthLink Fixed Wireless in Castleton, VT
EarthLink fixed wireless coverage
About 42.71%, or 1,215 people, have EarthLink fixed wireless internet available to them in the city. The company covers the southwest, central, east, northeast, west, south, southeast, and northwest Castleton area. EarthLink is one of the largest internet service providers internet service providers in the US, with internet service available in some of Castleton.
EarthLink fixed wireless download speeds
EarthLink is below average when comparing download speeds to all other internet providers in Castleton. Versus other fixed wireless providers in the area, EarthLink fixed wireless is below average. There are no different maximum speeds throughout Castleton. The fastest plan anyone in Castleton can order from EarthLink goes up to 25 Mbps, and all Castleton customers can get this speed.
Show all download speeds
- 100.0% up to 25.0 Mbps
EarthLink fixed wireless upload speeds
In Castleton download speeds tend to be faster than than upload speeds for EarthLink fixed wireless. Compared to other ISPs, EarthLink is below average where upload speeds are concerned, and below average compared to other Castleton fixed wireless providers. EarthLink offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Castleton is up to 3.0 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 3.0 Mbps
AT&T Fixed Wireless in Castleton, VT
AT&T fixed wireless coverage
About 42.71%, or 1,215 people, have AT&T fixed wireless internet available to them in the city. The company covers the southwest, central, east, northeast, west, south, southeast, and northwest Castleton area. AT&T is one of the largest internet service providers internet service providers in the US, with internet service available in some of Castleton.
AT&T fixed wireless download speeds
AT&T is below average when comparing download speeds to all other internet providers in Castleton. Versus other fixed wireless providers in the area, AT&T fixed wireless is below average. There are no different maximum speeds throughout Castleton. The fastest plan anyone in Castleton can order from AT&T goes up to 25 Mbps, and all Castleton customers can get this speed.
Show all download speeds
- 100.0% up to 25.0 Mbps
AT&T fixed wireless upload speeds
In Castleton download speeds tend to be faster than than upload speeds for AT&T fixed wireless. Compared to other ISPs, AT&T is below average where upload speeds are concerned, and below average compared to other Castleton fixed wireless providers. AT&T offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Castleton is up to 3.0 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 3.0 Mbps
Verizon Fixed Wireless in Castleton, VT
Verizon fixed wireless coverage
About 31.18%, or 887 people, have Verizon fixed wireless internet available to them in the city. The company covers the central, southwest, east, west, northeast, south, and southeast Castleton area. Verizon is one of the largest internet service providers internet service providers in the US, with internet service available in a small portion of Castleton.
Verizon fixed wireless download speeds
Verizon is below average when comparing download speeds to all other internet providers in Castleton. Versus other fixed wireless providers in the area, Verizon fixed wireless is the fastest. There are no different maximum speeds throughout Castleton. The fastest plan anyone in Castleton can order from Verizon goes up to 300 Mbps, and all Castleton customers can get this speed.
Show all download speeds
- 100.0% up to 300.0 Mbps
Verizon fixed wireless upload speeds
In Castleton download speeds tend to be faster than than upload speeds for Verizon fixed wireless. Compared to other ISPs, Verizon is below average where upload speeds are concerned, and the fastest compared to other Castleton fixed wireless providers. Verizon offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Castleton is up to 20 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 20.0 Mbps
Castleton Internet by Area
This information is most helpful to those looking for homes or considering moving to Castleton or any of the areas nearby.
How does internet in Castleton compare to the rest of Vermont?
Internet speeds in Castleton are slower versus the average speeds in Vermont: 2,127 Mbps in Vermont versus 1,911 Mbps in the city. The state has similar internet availability compared to the city. Average internet coverage in Vermont is 98.20% versus 98.66% in Castleton.
What zip codes have widespread internet?
Internet coverage varies by zip code and neighborhood. Some examples in or around Castleton are shown below. You can enter any zip code here to see TV and internet providers by zip code.
What does internet service 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
- Bomoseen, VT: more internet coverage, slower speeds
- Hydeville, VT: more internet coverage, faster speeds
- West Castleton, VT: more internet coverage, slower speeds
- Fair Haven, VT: more internet coverage, slower speeds
- East Hubbardton, VT: more internet coverage, slower speeds
- Poultney, VT: more internet coverage, faster speeds
- West Rutland, VT: more internet coverage, faster speeds
- Hubbardton, VT: more internet coverage, slower speeds
- Low Hampton, NY: more internet coverage, slower speeds
- Florence, VT: less internet coverage, faster speeds
Cities with Similar Populations
- Aviston, IL: more internet coverage, faster speeds
- West Tawakoni, TX: more internet coverage, faster speeds
- Belmond, IA: more internet coverage, slower speeds
- Bruce, MS: more internet coverage, slower speeds
- Sedgwick, KS: more internet coverage, faster speeds
- Morning View, KY: more internet coverage, faster speeds
- Mountainburg, AR: more internet coverage, slower speeds
- New Britain, PA: less internet coverage, faster speeds
- New Florence, PA: more internet coverage, slower speeds
- Oak Hill, FL: less internet coverage, slower speeds