8 Best Internet Providers in Castleton, VT
Find internet availability by address in Castleton, VT
Jump to: Best Internet Provider | Availability Maps | Customer Reviews | Castleton ISP Report Card | Business Internet in Castleton
| Castleton ISP Report Card | B | |
| Download Speed for Most Households | 1,911 Mbps | |
| Number of Internet Service Providers | 8 | |
| Real Castleton Customer Ratings | 0 |
This page reflects the most recent FCC update from January 06, 2026, based on the Broadband Data Collection as of June 30, 2025.
This page reflects the most recent FCC update from January 06, 2026, based on the Broadband Data Collection as of June 30, 2025.
Castleton has 8 internet service providers, they are sorted by coverage, available speed, and customer rating from our unbiased internet provider report. Fiber, Cable, Fixed Wireless, and DSL internet are available in the city. Reviews are grouped by provider and the type of service they offer, covering all 4 available internet technologies in Castleton.
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Castleton has 8 internet service providers, they are sorted by coverage, available speed, and customer rating from our unbiased internet provider report. Fiber, Cable, Fixed Wireless, and DSL internet are available in the city. Reviews are grouped by provider and the type of service they offer, covering all 4 available internet technologies in Castleton.
Compare Providers Ranked by Coverage, Speed, and Customer Ratings
XFINITY
Connection
Customer Rating
Cable
Fidium
Connection
Customer Rating
Fiber
DSL
OTTCTel
Connection
Customer Rating
Fiber
EarthLink
Connection
Customer Rating
Fixed Wireless
Above are the top 4 providers in Castleton, VT for most people based on high speed internet coverage, speeds, and customer reviews. Click below to see all providers in your city.
Speed and technology may vary by address for all providers. Please note we may have a financial relationship with some of the providers above, which does not impact the customer ratings displayed. Customer ratings listed above are national ratings, local Castleton ratings may vary and are shown below.
Who is the Best Internet Provider in Castleton, VT?
Fidium Fiber is the best internet provider in Castleton based on Vermont customer satisfaction ratings and reviews. Based on our extensive and unbiased survey, Fidium Fiber had the best reviews at the local, state, and national levels versus all available providers in Castleton, making it a solid recommendation among providers with reviews. Fidium Fiber is an option for 91.95% of the city.
Click here to get Fidium Fiber
or call 1-833-875-1335
The chart and table below show average customer ratings from customers in Castleton, Vermont, and customers throughout the country.
Top Rated Internet Providers in Castleton
Local, State, and National Ratings for all Castleton Internet Providers
| ISP / Tech Type | Castleton Overall | Vermont Overall | National Overall | For Service | ||
|---|---|---|---|---|---|---|
| Fidium | (0) | (8) | (70) | View Plans | ||
| XFINITY | (0) | (11) | (2164) | View Plans | ||
| HughesNet | (0) | (1) | (18) | View Plans | ||
| T-Mobile Home Internet | (0) | (0) | (284) | View Plans | ||
| Verizon | (0) | (0) | (723) | View Plans | ||
| AT&T | (0) | (0) | (924) | View Plans | ||
| EarthLink | (0) | (0) | (12) | View Plans | ||
| Viasat | (0) | (0) | (11) | View Plans | ||
| VTel Wireless | (0) | (0) | (0) | View Plans | ||
| OTTCTel | (0) | (0) | (0) | View Plans |
Based on 20 reviews from Vermont internet customers, Fidium Fiber is the best internet service provider for Castleton residents. Fidium Fiber was rated at an average of 4.25 out of 5 in our report for overall customer satisfaction. XFINITY from Comcast wins for second-place in Vermont, with 3.45 out of 5 stars and 92.8% coverage in Castleton.
At a national level, based on 4206 national reviews for any of the providers listed above, T-Mobile Home Internet is rated higher than any other provider, with a rating of 4.04 out of 5.
Which Providers are Available at my Home in Castleton?
a different provider.

Internet Availability Key
Speeds and coverage vary within the city, and sometimes even from block to block. The map shows speeds per provider and where each provider is available.
Who is the Fastest Internet Provider in Castleton?
Based on both FCC data and unbiased customer ratings in Castleton, the fastest internet in the city comes from Fidium Fiber.
Data Reported to FCC by ISPs: Average Maximum Available in Castleton
| ISP / Tech Type | Max Advertised Speed | ||
|---|---|---|---|
| Fidium Fiber | 2,000 Mbps | ||
| XFINITY from Comcast | 2,000 Mbps | ||
| Ontario & Trumansburg Telephone Companies | 1,000 Mbps | ||
| Verizon | 300 Mbps | ||
| T-Mobile Home Internet | 100 Mbps | ||
| Viasat | 100 Mbps | ||
| AT&T | 25 Mbps | ||
| EarthLink | 25 Mbps | ||
| HughesNet | 25 Mbps | ||
| VTel Wireless | 25 Mbps |
Customer Ratings for Internet Provider Speeds in Castleton
| ISP / Tech Type | Castleton Speed | Vermont Speed | National Speed | For Service | ||
|---|---|---|---|---|---|---|
| Fidium | (0) | (8) | (70) | View Plans | ||
| XFINITY | (0) | (11) | (2164) | View Plans | ||
| HughesNet | (0) | (1) | (18) | View Plans | ||
| Verizon | (0) | (0) | (723) | View Plans | ||
| T-Mobile Home Internet | (0) | (0) | (284) | View Plans | ||
| AT&T | (0) | (0) | (924) | View Plans | ||
| EarthLink | (0) | (0) | (12) | View Plans | ||
| Viasat | (0) | (0) | (11) | View Plans | ||
| VTel Wireless | (0) | (0) | (0) | View Plans | ||
| OTTCTel | (0) | (0) | (0) | View Plans |
Based on data reported by Castleton ISPs to the FCC, the fastest speeds in the city are available through Fidium Fiber. The company offers speeds up to 2,000 Mbps in Castleton. Therefore, the average customer can get up to 1,925 Mbps if they're willing to purchase the fastest subscription tier available at their homes.
However, actual customers in the city rated their satisfaction with internet speed highest with Fidium Fiber. This indicates Fidium reliably delivers speeds expected by the customer based on the plan they are paying for.
Who is the Cheapest Internet Provider in Castleton?
Vermont customers rate Fidium Fiber as the cheapest internet service provider in state. Data comes from customers in the state rating their satisfaction with pricing. This feedback is valuable because it considers price changes and whether the speeds paid for are worth it.
Fidium Fiber received a local rating of 3.88 out of 5, which is lower than the average across all internet providers in the country. XFINITY from Comcast is rated in second place for affordability by the company’s Castleton customers with an average price rating of 3.55 out of 5.
The chart and graph below show how customers in Castleton, Vermont, and the United States rated the affordability of their internet service.
Rated Affordability in Castleton
| ISP / Tech Type | Castleton Affordability | Vermont Affordability | National Affordability | For Service | ||
|---|---|---|---|---|---|---|
| Fidium | (0) | (8) | (70) | View Plans | ||
| XFINITY | (0) | (11) | (2164) | View Plans | ||
| HughesNet | (0) | (1) | (18) | View Plans | ||
| T-Mobile Home Internet | (0) | (0) | (284) | View Plans | ||
| AT&T | (0) | (0) | (924) | View Plans | ||
| Verizon | (0) | (0) | (723) | View Plans | ||
| EarthLink | (0) | (0) | (12) | View Plans | ||
| Viasat | (0) | (0) | (11) | View Plans | ||
| VTel Wireless | (0) | (0) | (0) | View Plans | ||
| OTTCTel | (0) | (0) | (0) | View Plans |
Castleton Internet Health Assessment
ISP Reports evaluates the technological infrastructure across the United States. This includes assessing a grade for ISP providers and infrastructure in the city and setting an index number for the digital connectivity of its residents. You can view the ISP Report Card and the Digital Connectivity Index for Castleton below, including the metrics used and how Castleton compares to the rest of Vermont and nation.
| Metric
(hover for details)
|
Castleton | Vermont | USA | ||
|---|---|---|---|---|---|
| Fiber Availability Percent The percentage of households in Castleton that have a Fiber internet connection available to their home. | 97.75% | 68.33% | 67.25% | ||
| Average Download SpeedThe maximum download speed most households can get on average. This is measured by availability in a block group and weighted by the population in that area. | 1,911 Mbps | 2,127 Mbps | 3,293 Mbps | ||
| Provider CountThe number of providers available for most people. This is a weighted average by block rather than a total for Castleton. | 5.3 | 5.7 | 6.8 |
| Average Household SizeA larger household size in a city indicates that there will be a greater need for bandwidth due to simultaneous usage, multiple devices, and network congestion. | 2.2 | 2.4 | 2.7 | ||
| Work From Home PercentA higher percent of the population working from home indicates bandwidth requirements being more widely needed rather than consolidated to commercial portions of the city. | 6% | 15% | 14% | ||
| Households with DevicesA higher percentage of households with computing devices in the home indicates a higher level of infrastructure needed to support those households. | 86% | 94% | 95% | ||
| Households with InternetA higher percentage of households with internet indicates a higher need for usage and connectivity in people’s daily lives. | 80% | 88% | 90% | ||
| Households with BroadbandA higher percentage of households with a broadband connection (defined as speeds above 25 Mbps) indicates heavier usage needs within these households. | 60% | 75% | 75% | ||
| Broadband Usage vs. AvailabilityThis measures what percentage of households who have a broadband connection to their home actually have an active subscription to that service. | 61% | 77% | 76% |
Our demographic data is sourced from the latest 5-year release of the American Community Survey by the US Census Bureau.
Castleton ISP Report Card & Digital Connectivity Index
The ISP Report Card in Castleton is B, which is worse than other cities. The local demand for broadband internet connectivity in Castleton is high with a score of 28 / 100 in our Digital Connectivity Index. This means that internet service providers operating in Castleton have done a poor job meeting the needs of its residents.
The Castleton ISP Report Card evaluates the city on availability and speed metrics compared to other cities in the United States. ISP Infrastructure can vary greatly and on its own isn’t a perfect measure of what a city needs. Please see our ISP Report Card along with the Digital Connectivity Index above to evaluate how well the connectivity demand is met by the existing infrastructure.
80% of Castleton households have an internet connection despite having 98.66% availability. 60% of households have fiber, cable, or DSL, 4% have satellite, 1% are still on dial-up, and 5% of households have internet but don’t pay for a subscription because it’s subsidized by the Affordable Connectivity Program.
As you can see in the table above, while 60% of households have a broadband connection such as fiber, cable or DSL available to their home, 61% subscribe to it. A low number of Castleton residents are taking advantage of the available internet infrastructure.
For more details, please visit our ISP Report Card and Digital Connectivity Index pages.
How do Neighboring Cities Compare to Castleton?
- ISP Report Card: B+
- Digital Connectivity Index: 32 / 100
- ISP Report Card: B+
- Digital Connectivity Index: 34 / 100
- ISP Report Card: B+
- Digital Connectivity Index: 34 / 100
- ISP Report Card: B
- Digital Connectivity Index: 39 / 100
- ISP Report Card: A-
- Digital Connectivity Index: 49 / 100
- ISP Report Card: B+
- Digital Connectivity Index: 36 / 100
- ISP Report Card: B+
- Digital Connectivity Index: 49 / 100
- ISP Report Card: B
- Digital Connectivity Index: 63 / 100
- ISP Report Card: D+
- Digital Connectivity Index: 37 / 100
How Much Speed does a Castleton Household Need?
Higher speed is typically preferred, but that comes at a higher price. The average size of a household in Castleton is 2.2, which is smaller than the Vermont average of 2.4 and smaller than the national average of 2.7. Castleton's average household income is $68,860 which is about average for the Vermont average of $82,544 and about average for the national average of $90,606. Homes with fewer people living in them and with lower incomes tend to indicate fewer devices being used less often.
Castleton also has 33% of its population enrolled in school between the 6th grade and college level, this is higher than the Vermont average of 15%. Additionally, 6% of residents work from home, which is lower than the 15% of residents in Vermont who work from home. This and other factors you can see above show us that the community of Castleton has a very low need for internet connectivity and speeds.
Compared to the rest of the country, Castleton households are much more technology-disengaged. 86% of households have some sort of computing device, 76% have desktops or laptops in the home, and 81% have smartphones. To see what speeds you are currently getting, please visit our internet speed test tool.
Which Fiber Internet Providers are Available in Castleton?
Fidium Fiber in Castleton, VT
Fidium Fiber offers Fiber service to 88.5% of Castleton homes. Across the city, Fidium Fiber has speeds up to 2,000 Mbps
OTTCTel Fiber in Castleton, VT
Ontario & Trumansburg Telephone Companies offers Fiber service to 11.0% of Castleton homes. Across the city, OTTCTel Fiber is the only type of service available from the company, with speeds up to 1,000 Mbps
Which Cable Internet Providers are Available in Castleton?
XFINITY Cable in Castleton, VT
XFINITY from Comcast offers Cable service to 92.8% of Castleton homes. Across the city, XFINITY Cable is the only type of service available from the company, with speeds up to 1,216 Mbps, with speeds from 1,200 Mpbs up to 2,000 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 35 and as high as 250, with an average of 39 Mbps throughout the city.
Which DSL Internet Providers are Available in Castleton?
Fidium DSL in Castleton, VT
Fidium Fiber offers DSL service to 24.3% of Castleton homes. Across the city, Fidium DSL has speeds up to 16 Mbps, with speeds from 10 Mpbs up to 60 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 1.0 and as high as 10, with an average of 2.0 Mbps throughout the city. Fidium DSL is rated lower than other types of internet service available in Castleton from Fidium in terms of customer satisfaction.
Which Fixed Wireless and LTE Internet Providers are Available in Castleton?
VTel Wireless Fixed Wireless in Castleton, VT
VTel Wireless offers Fixed Wireless service to 98.5% of Castleton homes. Across the city, VTel Wireless Fixed Wireless is the only type of service available from the company, with speeds up to 19 Mbps, with speeds from 10 Mpbs up to 25 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 1.0 and as high as 3.0, with an average of 2.2 Mbps throughout the city.
T-Mobile Home Internet Fixed Wireless in Castleton, VT
T-Mobile Home Internet offers Fixed Wireless service to 90.5% of Castleton homes. Across the city, T-Mobile Home Internet Fixed Wireless is the only type of service available from the company, with speeds up to 81 Mbps, with speeds from 25 Mpbs up to 100 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 3.0 and as high as 20, with an average of 16 Mbps throughout the city.
EarthLink Fixed Wireless in Castleton, VT
EarthLink offers Fixed Wireless service to 42.7% of Castleton homes. Across the city, EarthLink Fixed Wireless is the only type of service available from the company, with speeds up to 25 Mbps
AT&T Fixed Wireless in Castleton, VT
AT&T offers Fixed Wireless service to 42.7% of Castleton homes. Across the city, AT&T Fixed Wireless is the only type of service available from the company, with speeds up to 25 Mbps
Verizon Fixed Wireless in Castleton, VT
Verizon offers Fixed Wireless service to 31.2% of Castleton homes. Across the city, Verizon Fixed Wireless is the only type of service available from the company, with speeds up to 300 Mbps
Which ISP Should You Choose in Castleton?
The right ISP for you depends upon your needs, but in general we can make the following suggestions:
- The best all-around internet service provider in Castleton is Fidium.
- The fastest internet provider should be Fidium Fiber. Considering speed for the money and reliability in speeds, Fidium Fiber may be a better choice based on real-world local customer feedback.
- The most affordable internet provider in Castleton is Fidium.
- VTel Wireless, Viasat, and HughesNet has the broadest coverage in Castleton, and is most likely to cover your home. To find out exactly what's available at your home, please use our address search tool.
How does Castleton compare to other cities with a similar population?
To see how Castleton stacks up on the national level, it's useful to look at some other cities with similarly sized populations. Below you can see a list of these cities and how they compare to Castleton's B ISP Report Card and 28 / 100 Digital Connectivity Index.
- ISP Report Card: A
- Digital Connectivity Index: 76 / 100
- ISP Report Card: A-
- Digital Connectivity Index: 37 / 100
- ISP Report Card: B-
- Digital Connectivity Index: 44 / 100
- ISP Report Card: B-
- Digital Connectivity Index: 19 / 100
- ISP Report Card: B+
- Digital Connectivity Index: 65 / 100
- ISP Report Card: B
- Digital Connectivity Index: 73 / 100
- ISP Report Card: C+
- Digital Connectivity Index: 22 / 100
- ISP Report Card: B
- Digital Connectivity Index: 83 / 100
- ISP Report Card: C-
- Digital Connectivity Index: 45 / 100