In Sinai there are 12 residential internet providers covering 100.00% of the city. The average home can get speeds up to 1,000 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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12 Internet Service Providers in Sinai
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 Sinai are not shown.
Sinai 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 Sinai
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 100.00% of Sinai. 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 ITC. Now you can call companies in Sinai with more confidence that they might be available.
How fast are internet speeds in Sinai?
The map below shows maximum internet speeds by area in Sinai.
Internet Speed Key
The average Sinai home can get up to 1,000 Mbps on their internet plan. For most people, the fastest download speed in the city is 1,000 Mbps, which 100.00% of residents can get.
What type of internet should I choose in Sinai?
The fastest internet for you may vary based on where in Sinai you live. If speed is your main concern, fiber will be the fastest internet in the city.
- Fiber is the fastest internet type for 100.00% of Sinai homes.
- Cable is fastest for less than 1% 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 less than 1% of Sinai homes.
Internet Market Health in Sinai
Internet Competition Key
The map shows how competitive the Sinai 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 Sinai based on what connections the average home has availabile:
- Average number of internet service providers to a home: 3.1 (unhealthy)
- Average types of service (fiber, cable, DSL, etc): 1.9 (very unhealthy)
- Average providers with broadband (25 Mbps+) speeds: 3.0 (unhealthy)
Overall, competition is very unhealthy.
Sinai internet customers have the ability to buy internet service from 1 to 7 different providers, depending on where they live. For different types of service, Sinai homes have between 1 and 3 options. The type(s) of service available are fiber, fixed wireless, 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. Sinai internet customers who want faster speeds have between 1 and 7 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, Sinai badly needs improvement.
TV & Internet Providers in Depth
Below you'll find which TV and internet providers offer service in Sinai, along with details on where in Sinai and at what speeds.
Interstate Telecommunications Cooperative Fiber in Sinai, SD
ITC fiber coverage
About 64.18%, or 378 people, have ITC fiber internet available to them in the city. The company covers the entire Sinai area. ITC is a large internet service provider internet service providers in the US, with internet service available in a majority of Sinai.
Interstate Telecommunications Cooperative fiber download speeds
ITC is one of the fastest when comparing download speeds to all other internet providers in Sinai. Versus other fiber providers in the area, ITC fiber is one of the fastest. There are no different maximum speeds throughout Sinai. The fastest plan anyone in Sinai can order from ITC goes up to 1,000 Mbps, and all Sinai customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
Interstate Telecommunications Cooperative fiber upload speeds
In Sinai download speeds tend to be equal to than upload speeds for ITC fiber. Compared to other ISPs, ITC is one of the fastest where upload speeds are concerned, and one of the fastest compared to other Sinai fiber providers. ITC offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Sinai is up to 1,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 1,000.0 Mbps
Valley FiberCom Fiber in Sinai, SD
Valley FiberCom fiber coverage
About 41.77%, or 246 people, have Valley FiberCom fiber internet available to them in the city. The company covers the southwest, northwest, northeast, north, west, and southeast Sinai area. Valley FiberCom is a small internet service provider internet service providers in the US, with internet service available in some of Sinai.
Valley FiberCom fiber download speeds
Valley FiberCom is one of the fastest when comparing download speeds to all other internet providers in Sinai. Versus other fiber providers in the area, Valley FiberCom fiber is one of the fastest. There are no different maximum speeds throughout Sinai. The fastest plan anyone in Sinai can order from Valley FiberCom goes up to 1,000 Mbps, and all Sinai customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
Valley FiberCom fiber upload speeds
In Sinai download speeds tend to be equal to than upload speeds for Valley FiberCom fiber. Compared to other ISPs, Valley FiberCom is one of the fastest where upload speeds are concerned, and one of the fastest compared to other Sinai fiber providers. Valley FiberCom offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Sinai is up to 1,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 1,000.0 Mbps
Alliance Communications Fiber in Sinai, SD
Alliance Communications fiber coverage
About 21.56%, or 127 people, have Alliance Communications fiber internet available to them in the city. The company covers the southwest Sinai area. Alliance Communications is a large internet service provider internet service providers in the US, with internet service available in a small portion of Sinai.
Alliance Communications fiber download speeds
Alliance Communications is one of the fastest when comparing download speeds to all other internet providers in Sinai. Versus other fiber providers in the area, Alliance Communications fiber is one of the fastest. There are no different maximum speeds throughout Sinai. The fastest plan anyone in Sinai can order from Alliance Communications goes up to 1,000 Mbps, and all Sinai customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
Alliance Communications fiber upload speeds
In Sinai download speeds tend to be equal to than upload speeds for Alliance Communications fiber. Compared to other ISPs, Alliance Communications is one of the fastest where upload speeds are concerned, and one of the fastest compared to other Sinai fiber providers. Alliance Communications offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Sinai is up to 1,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 1,000.0 Mbps
Centurylink DSL in Sinai, SD
Centurylink DSL coverage
About 8.49%, or 50 people, have Centurylink DSL internet available to them in the city. The company covers the north, northeast, and northwest Sinai area. Centurylink is one of the largest internet service providers internet service providers in the US, with internet service available in a very small piece of Sinai.
Centurylink DSL download speeds
Centurylink is the slowest when comparing download speeds to all other internet providers in Sinai. Versus other DSL providers in the area, Centurylink DSL is the fastest. There are no different maximum speeds throughout Sinai. The fastest plan anyone in Sinai can order from Centurylink goes up to 10 Mbps, and all Sinai customers can get this speed.
Show all download speeds
- 100.0% up to 10.0 Mbps
Centurylink DSL upload speeds
In Sinai download speeds tend to be faster than than upload speeds for Centurylink DSL. Compared to other ISPs, Centurylink is the slowest where upload speeds are concerned, and the fastest compared to other Sinai DSL providers. Centurylink offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Sinai is up to 1.0 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 1.0 Mbps
GigFire Fixed Wireless in Sinai, SD
GigFire fixed wireless coverage
About 73.17%, or 431 people, have GigFire fixed wireless internet available to them in the city. The company covers the southwest, east, northwest, northeast, north, west, southeast, and south Sinai area. GigFire is a large internet service provider internet service providers in the US, with internet service available in much of Sinai.
GigFire fixed wireless download speeds
GigFire is below average when comparing download speeds to all other internet providers in Sinai. Versus other fixed wireless providers in the area, GigFire fixed wireless is above average. There are 3 different maximum speeds throughout Sinai. The fastest plan anyone in Sinai can order from GigFire goes up to 150 Mbps, the slowest package only goes up to 100 Mbps, and the city-wide average maximum speed for Sinai customers is up to 142 Mbps.
Show all download speeds
- 83.3% up to 150.0 Mbps
- 0.9% up to 140.0 Mbps
- 15.8% up to 100.0 Mbps
GigFire fixed wireless upload speeds
In Sinai download speeds tend to be faster than than upload speeds for GigFire fixed wireless. Compared to other ISPs, GigFire is below average where upload speeds are concerned, and the fastest compared to other Sinai fixed wireless providers. GigFire offers 3 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 Sinai is up to 130 Mbps. Some customers have slower plan choices, which only go up to 20 Mbps. On average, GigFire customers can get speeds up to 112 Mbps.
Show all upload speeds
- 83.3% up to 130.0 Mbps
- 0.9% up to 40.0 Mbps
- 15.8% up to 20.0 Mbps
T-Mobile Home Internet Fixed Wireless in Sinai, SD
T-Mobile Home Internet fixed wireless coverage
About 37.35%, or 220 people, have T-Mobile Home Internet fixed wireless internet available to them in the city. The company covers the northeast, northwest, north, west, east, southeast, and south Sinai area. T-Mobile Home Internet is one of the largest internet service providers internet service providers in the US, with internet service available in some of Sinai.
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 Sinai. Versus other fixed wireless providers in the area, T-Mobile Home Internet fixed wireless is below average. There are 2 different maximum speeds throughout Sinai. The fastest plan anyone in Sinai 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 Sinai customers is up to 33 Mbps.
Show all download speeds
- 10.9% up to 100.0 Mbps
- 89.1% up to 25.0 Mbps
T-Mobile Home Internet fixed wireless upload speeds
In Sinai 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 below average compared to other Sinai 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 Sinai 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 4.9 Mbps.
Show all upload speeds
- 10.9% up to 20.0 Mbps
- 89.1% up to 3.0 Mbps
wispwest.net Fixed Wireless in Sinai, SD
wispwest.net fixed wireless coverage
About 32.77%, or 193 people, have wispwest.net fixed wireless internet available to them in the city. The company covers the northwest, north, west, northeast, and east Sinai area. wispwest.net is a large internet service provider internet service providers in the US, with internet service available in a small portion of Sinai.
wispwest.net fixed wireless download speeds
wispwest.net is below average when comparing download speeds to all other internet providers in Sinai. Versus other fixed wireless providers in the area, wispwest.net fixed wireless is below average. There are 3 different maximum speeds throughout Sinai. The fastest plan anyone in Sinai can order from wispwest.net goes up to 100 Mbps, the slowest package only goes up to 25 Mbps, and the city-wide average maximum speed for Sinai customers is up to 50 Mbps.
Show all download speeds
- 15.0% up to 100.0 Mbps
- 53.4% up to 50.0 Mbps
- 31.6% up to 25.0 Mbps
wispwest.net fixed wireless upload speeds
In Sinai download speeds tend to be faster than than upload speeds for wispwest.net fixed wireless. Compared to other ISPs, wispwest.net is below average where upload speeds are concerned, and below average compared to other Sinai fixed wireless providers. wispwest.net offers 3 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 Sinai is up to 20 Mbps. Some customers have slower plan choices, which only go up to 8.0 Mbps. On average, wispwest.net customers can get speeds up to 11 Mbps.
Show all upload speeds
- 15.0% up to 20.0 Mbps
- 53.4% up to 10.0 Mbps
- 31.6% up to 8.0 Mbps
EarthLink Fixed Wireless in Sinai, SD
EarthLink fixed wireless coverage
About 13.75%, or 81 people, have EarthLink fixed wireless internet available to them in the city. The company covers the northeast, southeast, east, north, and northwest Sinai 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 Sinai.
EarthLink fixed wireless download speeds
EarthLink is below average when comparing download speeds to all other internet providers in Sinai. Versus other fixed wireless providers in the area, EarthLink fixed wireless is one of the slowest. There are no different maximum speeds throughout Sinai. The fastest plan anyone in Sinai can order from EarthLink goes up to 25 Mbps, and all Sinai customers can get this speed.
Show all download speeds
- 100.0% up to 25.0 Mbps
EarthLink fixed wireless upload speeds
In Sinai 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 Sinai fixed wireless providers. EarthLink offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Sinai 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 Sinai, SD
AT&T fixed wireless coverage
About 13.75%, or 81 people, have AT&T fixed wireless internet available to them in the city. The company covers the northeast, southeast, east, north, and northwest Sinai area. AT&T is one of the largest internet service providers internet service providers in the US, with internet service available in a very small piece of Sinai.
AT&T fixed wireless download speeds
AT&T is below average when comparing download speeds to all other internet providers in Sinai. Versus other fixed wireless providers in the area, AT&T fixed wireless is one of the slowest. There are no different maximum speeds throughout Sinai. The fastest plan anyone in Sinai can order from AT&T goes up to 25 Mbps, and all Sinai customers can get this speed.
Show all download speeds
- 100.0% up to 25.0 Mbps
AT&T fixed wireless upload speeds
In Sinai 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 Sinai fixed wireless providers. AT&T offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Sinai 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 Sinai, SD
Verizon fixed wireless coverage
About 3.06%, or 18 people, have Verizon fixed wireless internet available to them in the city. The company covers the southeast Sinai 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 Sinai.
Verizon fixed wireless download speeds
Verizon is below average when comparing download speeds to all other internet providers in Sinai. Versus other fixed wireless providers in the area, Verizon fixed wireless is the fastest. There are no different maximum speeds throughout Sinai. The fastest plan anyone in Sinai can order from Verizon goes up to 300 Mbps, and all Sinai customers can get this speed.
Show all download speeds
- 100.0% up to 300.0 Mbps
Verizon fixed wireless upload speeds
In Sinai 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 below average compared to other Sinai fixed wireless providers. Verizon offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Sinai is up to 20 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 20.0 Mbps
Sinai Internet by Area
This information is most helpful to those looking for homes or considering moving to Sinai or any of the areas nearby.
How does internet in Sinai compare to the rest of South Dakota?
Internet speeds in Sinai are slower versus the average speeds in South Dakota: 1,953 Mbps in South Dakota versus 1,000 Mbps in the city. The state has similar internet availability compared to the city. Average internet coverage in South Dakota is 98.12% versus 100.00% in Sinai.
What zip codes have widespread internet?
Internet coverage varies by zip code and neighborhood. Some examples in or around Sinai 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
- Arlington, SD: less internet coverage, slower speeds
- Nunda, SD: less internet coverage, similar speeds
- Volga, SD: equal internet coverage, slower speeds
- Ramona, SD: less internet coverage, similar speeds
- Oldham, SD: less internet coverage, slower speeds
- Rutland, SD: equal internet coverage, similar speeds
- Sunnyview, SD: less internet coverage, similar speeds
- Brookings, SD: less internet coverage, similar speeds
- Bruce, SD: equal internet coverage, slower speeds
- Hetland, SD: equal internet coverage, slower speeds
Cities with Similar Populations
- Okolona, AR: less internet coverage, similar speeds
- Preston, VA: equal internet coverage, faster speeds
- Preble, NY: less internet coverage, slower speeds
- Prairieville, MN: equal internet coverage, faster speeds
- Perry Center, NY: equal internet coverage, slower speeds
- Pembina, ND: equal internet coverage, similar speeds
- Partee, AR: less internet coverage, faster speeds
- Paradise, WA: equal internet coverage, faster speeds
- Palmers, MN: equal internet coverage, similar speeds
- Overbrook, AL: less internet coverage, slower speeds