In Southold there are 5 residential internet providers covering 99.29% of the city. The average home can get speeds up to 7,810 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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5 Internet Service Providers in Southold
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 Southold are not shown.
Southold 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 Southold
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 99.29% of Southold. 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 Optimum. Now you can call companies in Southold with more confidence that they might be available.
How fast are internet speeds in Southold?
The map below shows maximum internet speeds by area in Southold.
Internet Speed Key
The average Southold home can get up to 7,810 Mbps on their internet plan. For most people, the fastest download speed in the city is 8,000 Mbps, which 96.63% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, 2.67% of homes can only purchase plans up to 940 Mbps. See the internet provider details below for info about their speed and coverage in Southold.
Internet speeds tend to be faster in the southeast parts of Southold, and slower in the north areas of the city.
What type of internet should I choose in Southold?
The fastest internet for you may vary based on where in Southold you live. If speed is your main concern, fiber will be the fastest internet in the city.
- Fiber is the fastest internet type for 96.63% of Southold homes.
- Cable is fastest for 2.67% 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 Southold homes.
Internet Market Health in Southold
Internet Competition Key
The map shows how competitive the Southold 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 Southold based on what connections the average home has availabile:
- Average number of internet service providers to a home: 2.8 (very unhealthy)
- Average types of service (fiber, cable, DSL, etc): 2.8 (healthy)
- Average providers with broadband (25 Mbps+) speeds: 2.8 (unhealthy)
Overall, competition is unhealthy.
Southold internet customers have the ability to buy internet service from 1 to 4 different providers, depending on where they live. For different types of service, Southold homes have between 1 and 3 options. The type(s) of service available are cable, fiber, and fixed wireless, 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 similar. Southold internet customers who want faster speeds have between 1 and 4 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, Southold needs improvement.
TV & Internet Providers in Depth
Below you'll find which TV and internet providers offer service in Southold, along with details on where in Southold and at what speeds.
Optimum Cable in Southold, NY
Optimum cable coverage
About 99.29%, or 5,767 people, have Optimum cable internet available to them in the city. The company covers the entire Southold area. Optimum is one of the largest internet service providers internet service providers in the US, with internet service available in most of Southold.
Optimum cable download speeds
Optimum is below average when comparing download speeds to all other internet providers in Southold. Versus other cable providers in the area, Optimum cable is the slowest. There are no different maximum speeds throughout Southold. The fastest plan anyone in Southold can order from Optimum goes up to 940 Mbps, and all Southold customers can get this speed.
Show all download speeds
- 100.0% up to 940.0 Mbps
Optimum cable upload speeds
In Southold download speeds tend to be faster than than upload speeds for Optimum cable. Compared to other ISPs, Optimum is below average where upload speeds are concerned, and the slowest compared to other Southold cable providers. Optimum offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Southold is up to 35 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 35.0 Mbps
Optimum Fiber in Southold, NY
Optimum fiber coverage
About 96.63%, or 5,612 people, have Optimum fiber internet available to them in the city. The company covers the entire Southold area. Optimum is one of the largest internet service providers internet service providers in the US, with internet service available in most of Southold.
Optimum fiber download speeds
Optimum is the fastest when comparing download speeds to all other internet providers in Southold. Versus other fiber providers in the area, Optimum fiber is the fastest. There are no different maximum speeds throughout Southold. The fastest plan anyone in Southold can order from Optimum goes up to 8,000 Mbps, and all Southold customers can get this speed.
Show all download speeds
- 100.0% up to 8,000.0 Mbps
Optimum fiber upload speeds
In Southold download speeds tend to be equal to than upload speeds for Optimum fiber. Compared to other ISPs, Optimum is the fastest where upload speeds are concerned, and the fastest compared to other Southold fiber providers. Optimum offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Southold is up to 8,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 8,000.0 Mbps
T-Mobile Home Internet Fixed Wireless in Southold, NY
T-Mobile Home Internet fixed wireless coverage
About 77.20%, or 4,484 people, have T-Mobile Home Internet fixed wireless internet available to them in the city. The company covers the entire Southold area. T-Mobile Home Internet is one of the largest internet service providers internet service providers in the US, with internet service available in much of Southold.
T-Mobile Home Internet fixed wireless download speeds
T-Mobile Home Internet is the slowest when comparing download speeds to all other internet providers in Southold. Versus other fixed wireless providers in the area, T-Mobile Home Internet fixed wireless is the slowest. There are 2 different maximum speeds throughout Southold. The fastest plan anyone in Southold 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 Southold customers is up to 58 Mbps.
Show all download speeds
- 44.5% up to 100.0 Mbps
- 55.5% up to 25.0 Mbps
T-Mobile Home Internet fixed wireless upload speeds
In Southold 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 the slowest where upload speeds are concerned, and the slowest compared to other Southold 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 Southold 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 11 Mbps.
Show all upload speeds
- 44.5% up to 20.0 Mbps
- 55.5% up to 3.0 Mbps
Verizon Fixed Wireless in Southold, NY
Verizon fixed wireless coverage
About 5.79%, or 336 people, have Verizon fixed wireless internet available to them in the city. The company covers the southwest, west, and northeast Southold 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 Southold.
Verizon fixed wireless download speeds
Verizon is below average when comparing download speeds to all other internet providers in Southold. Versus other fixed wireless providers in the area, Verizon fixed wireless is the fastest. There are no different maximum speeds throughout Southold. The fastest plan anyone in Southold can order from Verizon goes up to 300 Mbps, and all Southold customers can get this speed.
Show all download speeds
- 100.0% up to 300.0 Mbps
Verizon fixed wireless upload speeds
In Southold 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 Southold fixed wireless providers. Verizon offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Southold is up to 20 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 20.0 Mbps
Southold Internet by Area
This information is most helpful to those looking for homes or considering moving to Southold or any of the areas nearby.
How does internet in Southold compare to the rest of New York?
Internet speeds in Southold are much faster versus the average speeds in New York: 4,072 Mbps in New York versus 7,810 Mbps in the city. The state has similar internet availability compared to the city. Average internet coverage in New York is 98.64% versus 99.29% in Southold.
What zip codes have widespread internet?
Internet coverage varies by zip code and neighborhood. Some examples in or around Southold 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
- Greenport West, NY: less internet coverage, faster speeds
- Peconic, NY: more internet coverage, faster speeds
- Shelter Island Heights, NY: less internet coverage, slower speeds
- Cutchogue, NY: more internet coverage, faster speeds
- Greenport, NY: less internet coverage, slower speeds
- Shelter Island, NY: more internet coverage, faster speeds
- Dering Harbor, NY: more internet coverage, slower speeds
- North Haven, NY: more internet coverage, faster speeds
- East Marion, NY: more internet coverage, slower speeds
- Noyack, NY: more internet coverage, faster speeds
Cities with Similar Populations
- Clinton, LA: less internet coverage, slower speeds
- Columbus, WI: more internet coverage, slower speeds
- Columbus, TX: more internet coverage, slower speeds
- Columbus Grove, OH: more internet coverage, slower speeds
- Columbiaville, MI: more internet coverage, slower speeds
- Colby, KS: more internet coverage, slower speeds
- Coker, AL: less internet coverage, slower speeds
- Cohutta, GA: more internet coverage, slower speeds
- Cohasset, MN: more internet coverage, slower speeds
- Coeburn, VA: less internet coverage, slower speeds