In Old Greenwich there are 4 residential Fiber providers covering 100.00% of the city. The average home can get speeds up to 7,998 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 Fiber internet providers in Old Greenwich, CT.
To see availability maps for all providers including fiber, cable, DSL, and more in Old Greenwich, CT please click below.
Old Greenwich, CT Availability Maps
Fiber Internet Service Providers in Old Greenwich
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 Old Greenwich are not shown.
Old Greenwich 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 Old Greenwich is fiber internet available?
Fiber Internet Availability Key
Fiber is available in 100.00% of Old Greenwich. Areas in green have fiber 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 Old Greenwich above to see who has service at your home.
How fast is fiber internet in Old Greenwich?
The map below shows maximum fiber internet speeds by area in Old Greenwich.
Fiber Internet Speed Key
The average Old Greenwich home can get up to 7,998 Mbps on their fiber internet plan. The fastest fiber download speed in the city is 8,000 Mbps, which 99.82% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, less than 1% of homes can only purchase plans up to 7,000 Mbps. See the internet provider details below for info about their speed and coverage in Old Greenwich.
Fiber internet speeds tend to be faster in the southeast parts of Old Greenwich, and slower in the south areas of the city.
Is fiber the fastest internet I can get in Old Greenwich?
The fastest internet for you may vary based on where in Old Greenwich you live. In general, satellite competes most often with fiber in the city.
- Fiber is the fastest internet type for 100.00% of Old Greenwich 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 Old Greenwich homes.
Fiber Providers in Depth
Below you'll find which TV and internet providers offer service in Old Greenwich, along with details on where in Old Greenwich and at what speeds.
Frontier Communications Fiber in Old Greenwich, CT
Frontier fiber coverage
About 100.00%, or 7,349 people, have Frontier fiber internet available to them in the city. The company covers the entire Old Greenwich area. Frontier is one of the largest internet service providers internet service providers in the US, with internet service available in every corner of Old Greenwich.
Frontier Communications fiber download speeds
Frontier is above average when comparing download speeds to all other internet providers in Old Greenwich. Versus other fiber providers in the area, Frontier fiber is above average. There are no different maximum speeds throughout Old Greenwich. The fastest plan anyone in Old Greenwich can order from Frontier goes up to 7,000 Mbps, and all Old Greenwich customers can get this speed.
Show all download speeds
- 100.0% up to 7,000.0 Mbps
Frontier Communications fiber upload speeds
In Old Greenwich download speeds tend to be equal to than upload speeds for Frontier fiber. Compared to other ISPs, Frontier is above average where upload speeds are concerned, and above average compared to other Old Greenwich fiber providers. Frontier offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Old Greenwich is up to 7,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 7,000.0 Mbps
Optimum Fiber in Old Greenwich, CT
Optimum fiber coverage
About 99.82%, or 7,336 people, have Optimum fiber internet available to them in the city. The company covers the entire Old Greenwich area. Optimum is one of the largest internet service providers internet service providers in the US, with internet service available in most of Old Greenwich.
Optimum fiber download speeds
Optimum is the fastest when comparing download speeds to all other internet providers in Old Greenwich. Versus other fiber providers in the area, Optimum fiber is the fastest. There are no different maximum speeds throughout Old Greenwich. The fastest plan anyone in Old Greenwich can order from Optimum goes up to 8,000 Mbps, and all Old Greenwich customers can get this speed.
Show all download speeds
- 100.0% up to 8,000.0 Mbps
Optimum fiber upload speeds
In Old Greenwich 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 Old Greenwich fiber providers. Optimum offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Old Greenwich is up to 8,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 8,000.0 Mbps
EarthLink Fiber in Old Greenwich, CT
EarthLink fiber coverage
About 13.28%, or 976 people, have EarthLink fiber internet available to them in the city. The company covers the west, southeast, east, and south Old Greenwich 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 Old Greenwich.
EarthLink fiber download speeds
EarthLink is below average when comparing download speeds to all other internet providers in Old Greenwich. Versus other fiber providers in the area, EarthLink fiber is one of the slowest. There are no different maximum speeds throughout Old Greenwich. The fastest plan anyone in Old Greenwich can order from EarthLink goes up to 940 Mbps, and all Old Greenwich customers can get this speed.
Show all download speeds
- 100.0% up to 940.0 Mbps
EarthLink fiber upload speeds
In Old Greenwich download speeds tend to be faster than than upload speeds for EarthLink fiber. Compared to other ISPs, EarthLink is below average where upload speeds are concerned, and one of the slowest compared to other Old Greenwich fiber providers. EarthLink offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Old Greenwich is up to 880 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 880.0 Mbps
Verizon Fiber in Old Greenwich, CT
Verizon fiber coverage
About 13.28%, or 976 people, have Verizon fiber internet available to them in the city. The company covers the west, southeast, east, and south Old Greenwich 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 Old Greenwich.
Verizon fiber download speeds
Verizon is below average when comparing download speeds to all other internet providers in Old Greenwich. Versus other fiber providers in the area, Verizon fiber is one of the slowest. There are no different maximum speeds throughout Old Greenwich. The fastest plan anyone in Old Greenwich can order from Verizon goes up to 940 Mbps, and all Old Greenwich customers can get this speed.
Show all download speeds
- 100.0% up to 940.0 Mbps
Verizon fiber upload speeds
In Old Greenwich download speeds tend to be faster than than upload speeds for Verizon fiber. Compared to other ISPs, Verizon is below average where upload speeds are concerned, and one of the slowest compared to other Old Greenwich fiber providers. Verizon offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Old Greenwich is up to 880 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 880.0 Mbps
Old Greenwich Fiber by Area
This information is most helpful to those looking for homes or considering moving to Old Greenwich or any of the areas nearby.
How does fiber internet in Old Greenwich compare to the rest of Connecticut?
Fiber internet speeds in Old Greenwich are much faster versus the average speeds in Connecticut: 0.00 Mbps in Connecticut versus 7,998 Mbps in the city. The state has similar fiber availability compared to the city. Average fiber coverage in Connecticut is 0.00% versus 100.00% in Old Greenwich.
What zip codes have fiber internet?
Fiber internet coverage varies by zip code and neighborhood. Some examples in or around Old Greenwich are shown below. You can enter any zip code here to see TV and internet providers by zip code.
What does fiber 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
- Riverside, CT: less fiber coverage, faster speeds
- Cos Cob, CT: less fiber coverage, slower speeds
- Stamford, CT: less fiber coverage, slower speeds
- Greenwich, CT: less fiber coverage, slower speeds
- Darien, CT: less fiber coverage, slower speeds
- Port Chester, NY: less fiber coverage, slower speeds
- Rye Brook, NY: equal fiber coverage, slower speeds
- Purchase, NY: less fiber coverage, slower speeds
- Rye, NY: less fiber coverage, slower speeds
- Harrison, NY: less fiber coverage, slower speeds
Cities with Similar Populations
- Mound, MN: less fiber coverage, slower speeds
- Poolesville, MD: less fiber coverage, slower speeds
- Polk City, IA: less fiber coverage, slower speeds
- Point Pleasant, WV: less fiber coverage, slower speeds
- Pine Brook, NJ: less fiber coverage, slower speeds
- Mount Vernon, KY: less fiber coverage, slower speeds
- Mount Gilead, OH: less fiber coverage, slower speeds
- Mount Carmel, PA: less fiber coverage, slower speeds
- Mount Carmel, IL: less fiber coverage, slower speeds
- Port Isabel, TX: less fiber coverage, slower speeds