In Marlborough there is 1 residential DSL provider covering 12.97% of the city. The average home can get speeds up to 10 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 DSL internet providers in Marlborough, CT.
To see availability maps for all providers including fiber, cable, DSL, and more in Marlborough, CT please click below.
Marlborough, CT Availability Maps
DSL Internet Service Provider in Marlborough
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 Marlborough are not shown.
Marlborough 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 Marlborough is DSL internet available?
DSL Internet Availability Key
DSL is available in 12.97% of Marlborough. Areas in green have DSL internet service, where areas in yellow or red may not. The most widely available provider is Frontier. Call one of the companies with service in Marlborough above to see who has service at your home.
How fast is DSL internet in Marlborough?
The map below shows maximum DSL internet speeds by area in Marlborough.
DSL Internet Speed Key
The average Marlborough home can get up to 10 Mbps on their DSL internet plan. The fastest DSL download speed in the city is 10 Mbps, which 12.97% of residents can get.
Is DSL the fastest internet I can get in Marlborough?
The fastest internet for you may vary based on where in Marlborough you live. In general, fiber competes most often with DSL in the city.
- Fiber is the fastest internet type for 96.72% of Marlborough homes.
- Cable is fastest for 3.28% 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 Marlborough homes.
DSL Providers in Depth
Below you'll find which TV and internet providers offer service in Marlborough, along with details on where in Marlborough and at what speeds.
Frontier Communications DSL in Marlborough, CT
Frontier DSL coverage
About 12.97%, or 759 people, have Frontier DSL internet available to them in the city. The company covers the southeast, west, and central Marlborough area. Frontier is one of the largest internet service providers internet service providers in the US, with internet service available in a very small piece of Marlborough.
Frontier Communications DSL download speeds
Frontier is the slowest when comparing download speeds to all other internet providers in Marlborough. Versus other DSL providers in the area, Frontier DSL is the fastest. There are no different maximum speeds throughout Marlborough. The fastest plan anyone in Marlborough can order from Frontier goes up to 10 Mbps, and all Marlborough customers can get this speed.
Show all download speeds
- 100.0% up to 10.0 Mbps
Frontier Communications DSL upload speeds
In Marlborough download speeds tend to be faster than than upload speeds for Frontier DSL. Compared to other ISPs, Frontier is the slowest where upload speeds are concerned, and the fastest compared to other Marlborough DSL providers. Frontier offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Marlborough is up to 1.0 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 1.0 Mbps
Marlborough DSL by Area
This information is most helpful to those looking for homes or considering moving to Marlborough or any of the areas nearby.
How does DSL internet in Marlborough compare to the rest of Connecticut?
DSL internet speeds in Marlborough are much faster versus the average speeds in Connecticut: 0.00 Mbps in Connecticut versus 10 Mbps in the city. The state has similar DSL availability compared to the city. Average DSL coverage in Connecticut is 0.00% versus 12.97% in Marlborough.
What zip codes have DSL internet?
DSL internet coverage varies by zip code and neighborhood. Some examples in or around Marlborough are shown below. You can enter any zip code here to see TV and internet providers by zip code.
What does DSL 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
- Lake Pocotopaug, CT: more DSL coverage, similar speeds
- Hebron, CT: less DSL coverage, similar speeds
- East Hampton, CT: more DSL coverage, similar speeds
- Amston, CT: more DSL coverage, similar speeds
- Westchester, CT: more DSL coverage, similar speeds
- South Glastonbury, CT: more DSL coverage, faster speeds
- Glastonbury, CT: more DSL coverage, faster speeds
- Andover, CT: more DSL coverage, faster speeds
- Glastonbury Center, CT: more DSL coverage, faster speeds
- Colchester, CT: more DSL coverage, faster speeds
Cities with Similar Populations
- Ardmore, AL: more DSL coverage, similar speeds
- Cashmere, WA: more DSL coverage, faster speeds
- Oxford, ME: more DSL coverage, faster speeds
- Oxford, FL: more DSL coverage, faster speeds
- Owensville, MO: more DSL coverage, faster speeds
- Ovilla, TX: more DSL coverage, faster speeds
- Ottawa Hills, OH: more DSL coverage, faster speeds
- Ossian, IN: more DSL coverage, faster speeds
- Osceola, WI: more DSL coverage, faster speeds
- Osceola, IA: more DSL coverage, faster speeds