In Castalia there are 11 residential internet providers covering 99.83% of the city. The average home can get speeds up to 9,775 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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11 Internet Service Providers in Castalia
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 Castalia are not shown.
Castalia 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 Castalia
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.
Please note some providers will take longer to load than others
Internet service is available in 99.83% of Castalia. 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 Buckeye. Now you can call companies in Castalia with more confidence that they might be available.
How fast are internet speeds in Castalia?
The map below shows maximum internet speeds by area in Castalia.
Internet Speed Key
The average Castalia home can get up to 9,775 Mbps on their internet plan. For most people, the fastest download speed in the city is 10,000 Mbps, which 97.42% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, 1.35% of homes can only purchase plans up to 400 Mbps. See the internet provider details below for info about their speed and coverage in Castalia.
Internet speeds tend to be faster in the central parts of Castalia, and slower in the southwest areas of the city.
What type of internet should I choose in Castalia?
The fastest internet for you may vary based on where in Castalia you live. If speed is your main concern, fiber will be the fastest internet in the city.
- Fiber is the fastest internet type for 97.42% of Castalia homes.
- Cable is fastest for 1.06% of the city.
- DSL is fastest for less than 1%.
- Fixed wireless is fastest for 1.35%.
- Satellite internet may be the only option for less than 1% of Castalia homes.
Internet Market Health in Castalia
Internet Competition Key
The map shows how competitive the Castalia 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 Castalia based on what connections the average home has availabile:
- Average number of internet service providers to a home: 8.7 (very healthy)
- Average types of service (fiber, cable, DSL, etc): 3.4 (very healthy)
- Average providers with broadband (25 Mbps+) speeds: 7.2 (very healthy)
Overall, competition is very healthy.
Castalia internet customers have the ability to buy internet service from 4 to 12 different providers, depending on where they live. For different types of service, Castalia homes have between 1 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. Castalia internet customers who want faster speeds have between 4 and 10 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, Castalia is doing quite well.
TV & Internet Providers in Depth
Below you'll find which TV and internet providers offer service in Castalia, along with details on where in Castalia and at what speeds.
Buckeye Broadband Fiber in Castalia, OH
Buckeye fiber coverage
About 97.42%, or 3,399 people, have Buckeye fiber internet available to them in the city. The company covers the entire Castalia area. Buckeye is a large internet service provider internet service providers in the US, with internet service available in most of Castalia.
Buckeye Broadband fiber download speeds
Buckeye is the fastest when comparing download speeds to all other internet providers in Castalia. Versus other fiber providers in the area, Buckeye fiber is the fastest. There are no different maximum speeds throughout Castalia. The fastest plan anyone in Castalia can order from Buckeye goes up to 10,000 Mbps, and all Castalia customers can get this speed.
Show all download speeds
- 100.0% up to 10,000.0 Mbps
Buckeye Broadband fiber upload speeds
In Castalia download speeds tend to be equal to than upload speeds for Buckeye fiber. Compared to other ISPs, Buckeye is the fastest where upload speeds are concerned, and the fastest compared to other Castalia fiber providers. Buckeye offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Castalia is up to 10,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 10,000.0 Mbps
EarthLink DSL in Castalia, OH
EarthLink DSL coverage
About 73.12%, or 2,551 people, have EarthLink DSL internet available to them in the city. The company covers the entire Castalia area. EarthLink is one of the largest internet service providers internet service providers in the US, with internet service available in much of Castalia.
EarthLink DSL download speeds
EarthLink is one of the slowest when comparing download speeds to all other internet providers in Castalia. Versus other DSL providers in the area, EarthLink DSL is one of the slowest. There are no different maximum speeds throughout Castalia. The fastest plan anyone in Castalia can order from EarthLink goes up to 10 Mbps, and all Castalia customers can get this speed.
Show all download speeds
- 100.0% up to 10.0 Mbps
EarthLink DSL upload speeds
In Castalia download speeds tend to be faster than than upload speeds for EarthLink DSL. Compared to other ISPs, EarthLink is one of the slowest where upload speeds are concerned, and one of the slowest compared to other Castalia DSL providers. EarthLink offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Castalia is up to 1.0 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 1.0 Mbps
AT&T DSL in Castalia, OH
AT&T DSL coverage
About 73.12%, or 2,551 people, have AT&T DSL internet available to them in the city. The company covers the entire Castalia area. AT&T is one of the largest internet service providers internet service providers in the US, with internet service available in much of Castalia.
AT&T DSL download speeds
AT&T is one of the slowest when comparing download speeds to all other internet providers in Castalia. Versus other DSL providers in the area, AT&T DSL is one of the slowest. There are no different maximum speeds throughout Castalia. The fastest plan anyone in Castalia can order from AT&T goes up to 10 Mbps, and all Castalia customers can get this speed.
Show all download speeds
- 100.0% up to 10.0 Mbps
AT&T DSL upload speeds
In Castalia download speeds tend to be faster than than upload speeds for AT&T DSL. Compared to other ISPs, AT&T is one of the slowest where upload speeds are concerned, and one of the slowest compared to other Castalia DSL providers. AT&T offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Castalia is up to 1.0 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 1.0 Mbps
Buckeye Broadband Cable in Castalia, OH
Buckeye cable coverage
About 69.91%, or 2,439 people, have Buckeye cable internet available to them in the city. The company covers the entire Castalia area. Buckeye is a large internet service provider internet service providers in the US, with internet service available in much of Castalia.
Buckeye Broadband cable download speeds
Buckeye is average when comparing download speeds to all other internet providers in Castalia. Versus other cable providers in the area, Buckeye cable is one of the fastest. There are no different maximum speeds throughout Castalia. The fastest plan anyone in Castalia can order from Buckeye goes up to 1,000 Mbps, and all Castalia customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
Buckeye Broadband cable upload speeds
In Castalia download speeds tend to be faster than than upload speeds for Buckeye cable. Compared to other ISPs, Buckeye is below average where upload speeds are concerned, and the slowest compared to other Castalia cable providers. Buckeye offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Castalia is up to 20 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 20.0 Mbps
Amplex Internet DSL in Castalia, OH
Amplex Internet DSL coverage
About 7.57%, or 264 people, have Amplex Internet DSL internet available to them in the city. The company covers the central Castalia area. Amplex Internet is a large internet service provider internet service providers in the US, with internet service available in a very small piece of Castalia.
Amplex Internet DSL download speeds
Amplex Internet is below average when comparing download speeds to all other internet providers in Castalia. Versus other DSL providers in the area, Amplex Internet DSL is the fastest. There are no different maximum speeds throughout Castalia. The fastest plan anyone in Castalia can order from Amplex Internet goes up to 100 Mbps, and all Castalia customers can get this speed.
Show all download speeds
- 100.0% up to 100.0 Mbps
Amplex Internet DSL upload speeds
In Castalia download speeds tend to be equal to than upload speeds for Amplex Internet DSL. Compared to other ISPs, Amplex Internet is below average where upload speeds are concerned, and the fastest compared to other Castalia DSL providers. Amplex Internet offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Castalia is up to 100 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 100.0 Mbps
Spectrum Cable in Castalia, OH
Spectrum cable coverage
About 3.81%, or 133 people, have Spectrum cable internet available to them in the city. The company covers the northeast and northwest Castalia area. Spectrum is one of the largest internet service providers internet service providers in the US, with internet service available in a very small piece of Castalia.
Spectrum cable download speeds
Spectrum is average when comparing download speeds to all other internet providers in Castalia. Versus other cable providers in the area, Spectrum cable is one of the fastest. There are no different maximum speeds throughout Castalia. The fastest plan anyone in Castalia can order from Spectrum goes up to 1,000 Mbps, and all Castalia customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
Spectrum cable upload speeds
In Castalia download speeds tend to be faster than than upload speeds for Spectrum cable. Compared to other ISPs, Spectrum is below average where upload speeds are concerned, and the fastest compared to other Castalia cable providers. Spectrum offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Castalia is up to 35 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 35.0 Mbps
T-Mobile Home Internet Fixed Wireless in Castalia, OH
T-Mobile Home Internet fixed wireless coverage
About 99.83%, or 3,483 people, have T-Mobile Home Internet fixed wireless internet available to them in the city. The company covers the entire Castalia 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 Castalia.
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 Castalia. Versus other fixed wireless providers in the area, T-Mobile Home Internet fixed wireless is below average. There are 2 different maximum speeds throughout Castalia. The fastest plan anyone in Castalia 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 Castalia customers is up to 82 Mbps.
Show all download speeds
- 76.7% up to 100.0 Mbps
- 23.3% up to 25.0 Mbps
T-Mobile Home Internet fixed wireless upload speeds
In Castalia 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 average compared to other Castalia 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 Castalia 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
- 76.7% up to 20.0 Mbps
- 23.3% up to 3.0 Mbps
Amplex Internet Fixed Wireless in Castalia, OH
Amplex Internet fixed wireless coverage
About 99.40%, or 3,468 people, have Amplex Internet fixed wireless internet available to them in the city. The company covers the entire Castalia area. Amplex Internet is a large internet service provider internet service providers in the US, with internet service available in most of Castalia.
Amplex Internet fixed wireless download speeds
Amplex Internet is below average when comparing download speeds to all other internet providers in Castalia. Versus other fixed wireless providers in the area, Amplex Internet fixed wireless is below average. There are no different maximum speeds throughout Castalia. The fastest plan anyone in Castalia can order from Amplex Internet goes up to 100 Mbps, and all Castalia customers can get this speed.
Show all download speeds
- 100.0% up to 100.0 Mbps
Amplex Internet fixed wireless upload speeds
In Castalia download speeds tend to be faster than than upload speeds for Amplex Internet fixed wireless. Compared to other ISPs, Amplex Internet is below average where upload speeds are concerned, and above average compared to other Castalia fixed wireless providers. Amplex Internet offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Castalia is up to 20 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 20.0 Mbps
Community Fiber Solutions (CFS) Fixed Wireless in Castalia, OH
Community Fiber Solutions fixed wireless coverage
About 98.22%, or 3,427 people, have Community Fiber Solutions fixed wireless internet available to them in the city. The company covers the entire Castalia area. Community Fiber Solutions is a large internet service provider internet service providers in the US, with internet service available in most of Castalia.
Community Fiber Solutions (CFS) fixed wireless download speeds
Community Fiber Solutions is below average when comparing download speeds to all other internet providers in Castalia. Versus other fixed wireless providers in the area, Community Fiber Solutions fixed wireless is the fastest. There are no different maximum speeds throughout Castalia. The fastest plan anyone in Castalia can order from Community Fiber Solutions goes up to 400 Mbps, and all Castalia customers can get this speed.
Show all download speeds
- 100.0% up to 400.0 Mbps
Community Fiber Solutions (CFS) fixed wireless upload speeds
In Castalia download speeds tend to be faster than than upload speeds for Community Fiber Solutions fixed wireless. Compared to other ISPs, Community Fiber Solutions is below average where upload speeds are concerned, and the fastest compared to other Castalia fixed wireless providers. Community Fiber Solutions offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Castalia is up to 40 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 40.0 Mbps
North Coast Wireless Communications Fixed Wireless in Castalia, OH
North Coast Wireless Communications fixed wireless coverage
About 96.25%, or 3,358 people, have North Coast Wireless Communications fixed wireless internet available to them in the city. The company covers the entire Castalia area. North Coast Wireless Communications is a large internet service provider internet service providers in the US, with internet service available in most of Castalia.
North Coast Wireless Communications fixed wireless download speeds
North Coast Wireless Communications is below average when comparing download speeds to all other internet providers in Castalia. Versus other fixed wireless providers in the area, North Coast Wireless Communications fixed wireless is below average. There are 2 different maximum speeds throughout Castalia. The fastest plan anyone in Castalia can order from North Coast Wireless Communications goes up to 200 Mbps, the slowest package only goes up to 25 Mbps, and the city-wide average maximum speed for Castalia customers is up to 26 Mbps.
Show all download speeds
- 0.8% up to 200.0 Mbps
- 99.2% up to 25.0 Mbps
North Coast Wireless Communications fixed wireless upload speeds
In Castalia download speeds tend to be faster than than upload speeds for North Coast Wireless Communications fixed wireless. Compared to other ISPs, North Coast Wireless Communications is below average where upload speeds are concerned, and below average compared to other Castalia fixed wireless providers. North Coast Wireless Communications 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 Castalia is up to 100 Mbps. Some customers have slower plan choices, which only go up to 3.0 Mbps. On average, North Coast Wireless Communications customers can get speeds up to 3.8 Mbps.
Show all upload speeds
- 0.8% up to 100.0 Mbps
- 99.2% up to 3.0 Mbps
Verizon Fixed Wireless in Castalia, OH
Verizon fixed wireless coverage
About 93.78%, or 3,272 people, have Verizon fixed wireless internet available to them in the city. The company covers the entire Castalia area. Verizon is one of the largest internet service providers internet service providers in the US, with internet service available in most of Castalia.
Verizon fixed wireless download speeds
Verizon is below average when comparing download speeds to all other internet providers in Castalia. Versus other fixed wireless providers in the area, Verizon fixed wireless is above average. There are no different maximum speeds throughout Castalia. The fastest plan anyone in Castalia can order from Verizon goes up to 300 Mbps, and all Castalia customers can get this speed.
Show all download speeds
- 100.0% up to 300.0 Mbps
Verizon fixed wireless upload speeds
In Castalia 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 above average compared to other Castalia fixed wireless providers. Verizon offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Castalia is up to 20 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 20.0 Mbps
EarthLink Fixed Wireless in Castalia, OH
EarthLink fixed wireless coverage
About 27.03%, or 943 people, have EarthLink fixed wireless internet available to them in the city. The company covers the central, west, east, southwest, northeast, north, northwest, and southeast Castalia area. EarthLink is one of the largest internet service providers internet service providers in the US, with internet service available in a small portion of Castalia.
EarthLink fixed wireless download speeds
EarthLink is below average when comparing download speeds to all other internet providers in Castalia. Versus other fixed wireless providers in the area, EarthLink fixed wireless is one of the slowest. There are 2 different maximum speeds throughout Castalia. The fastest plan anyone in Castalia can order from EarthLink goes up to 100 Mbps, the slowest package only goes up to 25 Mbps, and the city-wide average maximum speed for Castalia customers is up to 25 Mbps.
Show all download speeds
- 0.5% up to 100.0 Mbps
- 99.5% up to 25.0 Mbps
EarthLink fixed wireless upload speeds
In Castalia 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 one of the slowest compared to other Castalia fixed wireless providers. EarthLink 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 Castalia is up to 20 Mbps. Some customers have slower plan choices, which only go up to 3.0 Mbps. On average, EarthLink customers can get speeds up to 3.1 Mbps.
Show all upload speeds
- 0.5% up to 20.0 Mbps
- 99.5% up to 3.0 Mbps
AT&T Fixed Wireless in Castalia, OH
AT&T fixed wireless coverage
About 27.03%, or 943 people, have AT&T fixed wireless internet available to them in the city. The company covers the central, west, east, southwest, northeast, north, northwest, and southeast Castalia area. AT&T is one of the largest internet service providers internet service providers in the US, with internet service available in a small portion of Castalia.
AT&T fixed wireless download speeds
AT&T is below average when comparing download speeds to all other internet providers in Castalia. Versus other fixed wireless providers in the area, AT&T fixed wireless is one of the slowest. There are 2 different maximum speeds throughout Castalia. The fastest plan anyone in Castalia can order from AT&T goes up to 100 Mbps, the slowest package only goes up to 25 Mbps, and the city-wide average maximum speed for Castalia customers is up to 25 Mbps.
Show all download speeds
- 0.5% up to 100.0 Mbps
- 99.5% up to 25.0 Mbps
AT&T fixed wireless upload speeds
In Castalia 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 one of the slowest compared to other Castalia fixed wireless providers. AT&T 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 Castalia is up to 20 Mbps. Some customers have slower plan choices, which only go up to 3.0 Mbps. On average, AT&T customers can get speeds up to 3.1 Mbps.
Show all upload speeds
- 0.5% up to 20.0 Mbps
- 99.5% up to 3.0 Mbps
Castalia Internet by Area
This information is most helpful to those looking for homes or considering moving to Castalia or any of the areas nearby.
How does internet in Castalia compare to the rest of Ohio?
Internet speeds in Castalia are much faster versus the average speeds in Ohio: 2,747 Mbps in Ohio versus 9,775 Mbps in the city. The state has similar internet availability compared to the city. Average internet coverage in Ohio is 98.95% versus 99.83% in Castalia.
What zip codes have widespread internet?
Internet coverage varies by zip code and neighborhood. Some examples in or around Castalia 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
- Venice, OH: less internet coverage, slower speeds
- Springbrook, OH: more internet coverage, slower speeds
- Parkertown, OH: more internet coverage, slower speeds
- Bloomingville, OH: less internet coverage, slower speeds
- Bay View, OH: more internet coverage, faster speeds
- Vickery, OH: more internet coverage, slower speeds
- Sandusky, OH: less internet coverage, faster speeds
- North Monroeville, OH: more internet coverage, slower speeds
- Bellevue, OH: less internet coverage, slower speeds
- Bogart, OH: less internet coverage, faster speeds
Cities with Similar Populations
- Providence, KY: less internet coverage, slower speeds
- Pine City, NY: less internet coverage, slower speeds
- Elsie, MI: less internet coverage, slower speeds
- Newbury, OH: more internet coverage, slower speeds
- Kiefer, OK: less internet coverage, slower speeds
- Moreland Hills, OH: more internet coverage, slower speeds
- Byfield, MA: more internet coverage, slower speeds
- West Blocton, AL: less internet coverage, slower speeds
- Plum Grove, TX: less internet coverage, slower speeds
- Pine Knot, KY: less internet coverage, slower speeds