In Harborside there is 1 residential DSL provider covering 45.19% 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 Harborside, ME.
To see availability maps for all providers including fiber, cable, DSL, and more in Harborside, ME please click below.
Harborside, ME Availability Maps
DSL Internet Service Provider in Harborside
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 Harborside are not shown.
Harborside 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 Harborside is DSL internet available?

DSL Internet Availability Key
DSL is available in 45.19% of Harborside. Areas in green have DSL internet service, where areas in yellow or red may not. The most widely available provider is Fidium. Call one of the companies with service in Harborside above to see who has service at your home.
How fast is DSL internet in Harborside?
The map below shows maximum DSL internet speeds by area in Harborside.

DSL Internet Speed Key
The average Harborside home can get up to 10 Mbps on their DSL internet plan. The fastest DSL download speed in the city is 10 Mbps, which 45.19% of residents can get.
Is DSL the fastest internet I can get in Harborside?
The fastest internet for you may vary based on where in Harborside you live. In general, fiber competes most often with DSL in the city.
- Fiber is the fastest internet type for 100.00% of Harborside 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 Harborside homes.
DSL Providers in Depth
Below you'll find which TV and internet providers offer service in Harborside, along with details on where in Harborside and at what speeds.
Fidium Fiber DSL in Harborside, ME

Fidium DSL coverage
About 45.19%, or 141 people, have Fidium DSL internet available to them in the city. The company covers the southeast, northwest, and east Harborside area. Fidium is one of the largest internet service providers internet service providers in the US, with internet service available in some of Harborside.
Fidium Fiber DSL download speeds
Fidium is one of the slowest when comparing download speeds to all other internet providers in Harborside. Versus other DSL providers in the area, Fidium DSL is the fastest. There are no different maximum speeds throughout Harborside. The fastest plan anyone in Harborside can order from Fidium goes up to 10 Mbps, and all Harborside customers can get this speed.
Show all download speeds
- 100.0% up to 10.0 Mbps
Fidium Fiber DSL upload speeds
In Harborside download speeds tend to be faster than than upload speeds for Fidium DSL. Compared to other ISPs, Fidium is one of the slowest where upload speeds are concerned, and the fastest compared to other Harborside DSL providers. Fidium offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Harborside is up to 1.0 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 1.0 Mbps
Harborside DSL by Area
This information is most helpful to those looking for homes or considering moving to Harborside or any of the areas nearby.
How does DSL internet in Harborside compare to the rest of Maine?
DSL internet speeds in Harborside are much faster versus the average speeds in Maine: 0.00 Mbps in Maine versus 10 Mbps in the city. The state has similar DSL availability compared to the city. Average DSL coverage in Maine is 0.00% versus 45.19% in Harborside.
What zip codes have DSL internet?
DSL internet coverage varies by zip code and neighborhood. Some examples in or around Harborside 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
- Castine, ME: less DSL coverage, similar speeds
- West Brooksville, ME: more DSL coverage, similar speeds
- Brooksville, ME: more DSL coverage, similar speeds
- Islesboro, ME: more DSL coverage, similar speeds
- West Penobscot, ME: more DSL coverage, faster speeds
- Sargentville, ME: more DSL coverage, similar speeds
- Sedgwick, ME: less DSL coverage, faster speeds
- South Penobscot, ME: more DSL coverage, similar speeds
- Dog Island Corner, ME: more DSL coverage, faster speeds
- Sunset, ME: more DSL coverage, similar speeds
Cities with Similar Populations
- Alger, WA: less DSL coverage, similar speeds
- Alma, WV: more DSL coverage, faster speeds
- Alquina, IN: more DSL coverage, faster speeds
- Alton Station, KY: less DSL coverage, similar speeds
- Altona, IN: more DSL coverage, faster speeds
- Zebina, GA: less DSL coverage, similar speeds
- Anchor, IL: more DSL coverage, faster speeds
- Anderson, KY: more DSL coverage, similar speeds
- Aquilla, OH: more DSL coverage, faster speeds
- Art, IN: more DSL coverage, faster speeds


