In Adelphi there are 2 residential Fiber providers covering 91.24% of the city. The average home can get speeds up to 1,832 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 Adelphi, MD.
To see availability maps for all providers including fiber, cable, DSL, and more in Adelphi, MD please click below.
Fiber Internet Service Providers in Adelphi
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 Adelphi are not shown.
Adelphi 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 Adelphi is fiber internet available?
Fiber Internet Availability Key
Fiber is available in 91.24% of Adelphi. Areas in green have fiber internet service, where areas in yellow or red may not. The most widely available provider is Earthlink. Call one of the companies with service in Adelphi above to see who has service at your home.
How fast is fiber internet in Adelphi?
The map below shows maximum fiber internet speeds by area in Adelphi.
Fiber Internet Speed Key
The average Adelphi home can get up to 1,832 Mbps on their fiber internet plan. The fastest fiber download speed in the city is 2,048 Mbps, which 73.48% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, 17.76% of homes can only purchase plans up to 940 Mbps. See the internet provider details below for info about their speed and coverage in Adelphi.
Fiber internet speeds tend to be faster in the southeast parts of Adelphi, and slower in the south areas of the city.
Is fiber the fastest internet I can get in Adelphi?
The fastest internet for you may vary based on where in Adelphi you live. In general, cable competes most often with fiber in the city.
- Fiber is the fastest internet type for 73.48% of Adelphi homes.
- Cable is fastest for 26.52% 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 Adelphi homes.
Fiber Providers in Depth
Below you'll find which TV and internet providers offer service in Adelphi, along with details on where in Adelphi and at what speeds.
EarthLink Fiber in Adelphi, MD
EarthLink fiber coverage
About 91.24%, or 14,689 people, have EarthLink fiber internet available to them in the city. The company covers the entire Adelphi area. EarthLink is one of the largest internet service providers internet service providers in the US, with internet service available in most of Adelphi.
EarthLink fiber download speeds
EarthLink is above average when comparing download speeds to all other internet providers in Adelphi. Versus other fiber providers in the area, EarthLink fiber is one of the fastest. There are 2 different maximum speeds throughout Adelphi. The fastest plan anyone in Adelphi can order from EarthLink goes up to 2,048 Mbps, the slowest package only goes up to 940 Mbps, and the city-wide average maximum speed for Adelphi customers is up to 1,832 Mbps.
Show all download speeds
- 80.5% up to 2,048.0 Mbps
- 19.5% up to 940.0 Mbps
EarthLink fiber upload speeds
In Adelphi download speeds tend to be faster than than upload speeds for EarthLink fiber. Compared to other ISPs, EarthLink is one of the fastest where upload speeds are concerned, and one of the fastest compared to other Adelphi fiber providers. EarthLink 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 Adelphi is up to 2,048 Mbps. Some customers have slower plan choices, which only go up to 880 Mbps. On average, EarthLink customers can get speeds up to 1,821 Mbps.
Show all upload speeds
- 80.5% up to 2,048.0 Mbps
- 19.5% up to 880.0 Mbps
Verizon Fiber in Adelphi, MD
Verizon fiber coverage
About 91.24%, or 14,689 people, have Verizon fiber internet available to them in the city. The company covers the entire Adelphi area. Verizon is one of the largest internet service providers internet service providers in the US, with internet service available in most of Adelphi.
Verizon fiber download speeds
Verizon is above average when comparing download speeds to all other internet providers in Adelphi. Versus other fiber providers in the area, Verizon fiber is one of the fastest. There are 2 different maximum speeds throughout Adelphi. The fastest plan anyone in Adelphi can order from Verizon goes up to 2,048 Mbps, the slowest package only goes up to 940 Mbps, and the city-wide average maximum speed for Adelphi customers is up to 1,832 Mbps.
Show all download speeds
- 80.5% up to 2,048.0 Mbps
- 19.5% up to 940.0 Mbps
Verizon fiber upload speeds
In Adelphi download speeds tend to be faster than than upload speeds for Verizon fiber. Compared to other ISPs, Verizon is one of the fastest where upload speeds are concerned, and one of the fastest compared to other Adelphi fiber providers. Verizon 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 Adelphi is up to 2,048 Mbps. Some customers have slower plan choices, which only go up to 880 Mbps. On average, Verizon customers can get speeds up to 1,821 Mbps.
Show all upload speeds
- 80.5% up to 2,048.0 Mbps
- 19.5% up to 880.0 Mbps
Adelphi Fiber by Area
This information is most helpful to those looking for homes or considering moving to Adelphi or any of the areas nearby.
How does fiber internet in Adelphi compare to the rest of Maryland?
Fiber internet speeds in Adelphi are much faster versus the average speeds in Maryland: 0.00 Mbps in Maryland versus 1,832 Mbps in the city. The state has similar fiber availability compared to the city. Average fiber coverage in Maryland is 0.00% versus 91.24% in Adelphi.
What zip codes have fiber internet?
Fiber internet coverage varies by zip code and neighborhood. Some examples in or around Adelphi 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
- College Park, MD: less fiber coverage, slower speeds
- Takoma Park, MD: more fiber coverage, faster speeds
- Chillum, MD: more fiber coverage, faster speeds
- University Park, MD: more fiber coverage, faster speeds
- Hyattsville, MD: more fiber coverage, slower speeds
- Four Corners, MD: more fiber coverage, faster speeds
- Silver Spring, MD: less fiber coverage, slower speeds
- White Oak, MD: more fiber coverage, faster speeds
- Berwyn Heights, MD: more fiber coverage, slower speeds
- Riverdale Park, MD: more fiber coverage, slower speeds
Cities with Similar Populations
- Franklin Park, PA: less fiber coverage, slower speeds
- Shively, KY: more fiber coverage, faster speeds
- Lindale, TX: less fiber coverage, slower speeds
- Ludington, MI: less fiber coverage, faster speeds
- South Houston, TX: more fiber coverage, faster speeds
- Beech Grove, IN: less fiber coverage, faster speeds
- Vermilion, OH: more fiber coverage, faster speeds
- Kailua-Kona, HI: more fiber coverage, faster speeds
- Bellevue, WI: less fiber coverage, faster speeds
- Jayuya, PR: more fiber coverage, slower speeds