In Sea Cliff there is 1 residential Cable provider covering 99.39% of the city. The average home can get speeds up to 940 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.
This page contains all Cable internet providers in Sea Cliff, NY.
To see availability maps for all providers including fiber, cable, DSL, and more in Sea Cliff, NY please click below.
Sea Cliff, NY Availability Maps
Cable Internet Service Provider in Sea Cliff
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 Sea Cliff are not shown.
Sea Cliff 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
Where in Sea Cliff is cable internet available?
Cable Internet Availability Key
Cable is available in 99.39% of Sea Cliff. Areas in green have cable internet service, where areas in yellow or red may not. The most widely available provider is Optimum. Call one of the companies with service in Sea Cliff above to see who has service at your home.
How fast is cable internet in Sea Cliff?
The map below shows maximum cable internet speeds by area in Sea Cliff.
Cable Internet Speed Key
The average Sea Cliff home can get up to 940 Mbps on their cable internet plan. The fastest cable download speed in the city is 940 Mbps, which 99.39% of residents can get.
Is cable the fastest internet I can get in Sea Cliff?
The fastest internet for you may vary based on where in Sea Cliff you live. In general, fiber competes most often with cable in the city.
- Fiber is the fastest internet type for 99.57% of Sea Cliff 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 Sea Cliff homes.
Cable Providers in Depth
Below you'll find which TV and internet providers offer service in Sea Cliff, along with details on where in Sea Cliff and at what speeds.
Optimum Cable in Sea Cliff, NY
Optimum cable coverage
About 99.39%, or 5,031 people, have Optimum cable internet available to them in the city. The company covers the entire Sea Cliff area. Optimum is one of the largest internet service providers internet service providers in the US, with internet service available in most of Sea Cliff.
Optimum cable download speeds
Optimum is below average when comparing download speeds to all other internet providers in Sea Cliff. Versus other cable providers in the area, Optimum cable is the fastest. There are no different maximum speeds throughout Sea Cliff. The fastest plan anyone in Sea Cliff can order from Optimum goes up to 940 Mbps, and all Sea Cliff customers can get this speed.
Show all download speeds
- 100.0% up to 940.0 Mbps
Optimum cable upload speeds
In Sea Cliff 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 fastest compared to other Sea Cliff cable providers. Optimum offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Sea Cliff is up to 35 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 35.0 Mbps
Sea Cliff Cable by Area
This information is most helpful to those looking for homes or considering moving to Sea Cliff or any of the areas nearby.
How does cable internet in Sea Cliff compare to the rest of New York?
Cable internet speeds in Sea Cliff are much faster versus the average speeds in New York: 0.00 Mbps in New York versus 940 Mbps in the city. The state has similar cable availability compared to the city. Average cable coverage in New York is 0.00% versus 99.39% in Sea Cliff.
What zip codes have cable internet?
Cable internet coverage varies by zip code and neighborhood. Some examples in or around Sea Cliff are shown below. You can enter any zip code here to see TV and internet providers by zip code.
What does cable internet 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
- Glen Head, NY: more cable coverage, similar speeds
- Glenwood Landing, NY: more cable coverage, similar speeds
- Glen Cove, NY: more cable coverage, similar speeds
- Roslyn Harbor, NY: more cable coverage, similar speeds
- Old Brookville, NY: more cable coverage, similar speeds
- Port Washington, NY: more cable coverage, similar speeds
- Greenvale, NY: more cable coverage, similar speeds
- Baxter Estates, NY: more cable coverage, similar speeds
- Port Washington North, NY: more cable coverage, similar speeds
- Flower Hill, NY: more cable coverage, similar speeds
Cities with Similar Populations
- Hollis Center, ME: more cable coverage, faster speeds
- Homer, NY: less cable coverage, faster speeds
- Homer, LA: less cable coverage, faster speeds
- Homer City, PA: less cable coverage, faster speeds
- Homedale, ID: less cable coverage, faster speeds
- Homeacre-Lyndora, PA: less cable coverage, faster speeds
- Holton, KS: less cable coverage, faster speeds
- Holt, AL: more cable coverage, faster speeds
- Hollywood, SC: less cable coverage, faster speeds
- Homerville, GA: less cable coverage, slower speeds