7 Best Internet Providers in Adelphi, MD
Find internet availability by address in Adelphi, MD
Jump to: Best Internet Provider | Availability Maps | Customer Reviews | Adelphi ISP Report Card | Business Internet in Adelphi
| Adelphi ISP Report Card | B | |
| Download Speed for Most Households | 2,035 Mbps | |
| Number of Internet Service Providers | 7 | |
| Real Adelphi Customer Ratings | 0 |
This page reflects the most recent FCC update from January 06, 2026, based on the Broadband Data Collection as of June 30, 2025.
This page reflects the most recent FCC update from January 06, 2026, based on the Broadband Data Collection as of June 30, 2025.
Adelphi has 7 internet service providers, they are sorted by coverage, available speed, and customer rating from our unbiased internet provider report. Fiber, Cable, and Fixed Wireless internet are available in the city. Reviews are grouped by provider and the type of service they offer, covering all 3 available internet technologies in Adelphi.
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Adelphi has 7 internet service providers, they are sorted by coverage, available speed, and customer rating from our unbiased internet provider report. Fiber, Cable, and Fixed Wireless internet are available in the city. Reviews are grouped by provider and the type of service they offer, covering all 3 available internet technologies in Adelphi.
Compare Providers Ranked by Coverage, Speed, and Customer Ratings
XFINITY
Connection
Customer Rating
Cable
EarthLink
Connection
Customer Rating
Fiber
Fixed Wireless
Verizon
Connection
Customer Rating
Fiber
Fixed Wireless
Astound Broadband
Connection
Customer Rating
Cable
Above are the top 4 providers in Adelphi, MD for most people based on high speed internet coverage, speeds, and customer reviews. Click below to see all providers in your city.
Speed and technology may vary by address for all providers. Please note we may have a financial relationship with some of the providers above, which does not impact the customer ratings displayed. Customer ratings listed above are national ratings, local Adelphi ratings may vary and are shown below.
Who is the Best Internet Provider in Adelphi, MD?
Verizon is the best internet provider in Adelphi based on Maryland customer satisfaction ratings and reviews. Based on our extensive and unbiased survey, Verizon had the best reviews at the local, state, and national levels versus all available providers in Adelphi, making it a solid recommendation among providers with reviews. Verizon is an option for 100.00% of the city.
or call 1-833-213-7018
The chart and table below show average customer ratings from customers in Adelphi, Maryland, and customers throughout the country.
Top Rated Internet Providers in Adelphi
Local, State, and National Ratings for all Adelphi Internet Providers
| ISP / Tech Type | Adelphi Overall | Maryland Overall | National Overall | For Service | ||
|---|---|---|---|---|---|---|
| Verizon | (0) | (61) | (723) | View Plans | ||
| EarthLink | (0) | (2) | (12) | View Plans | ||
| AT&T | (0) | (3) | (924) | View Plans | ||
| XFINITY | (0) | (65) | (2164) | View Plans | ||
| T-Mobile Home Internet | (0) | (9) | (284) | View Plans | ||
| HughesNet | (0) | (1) | (18) | View Plans | ||
| Astound Broadband | (0) | (2) | (109) | View Plans | ||
| Viasat | (0) | (0) | (11) | View Plans | ||
| Believe Wireless | (0) | (0) | (0) | View Plans |
Based on 143 reviews from Maryland internet customers, Verizon is the best internet service provider for Adelphi residents. Verizon was rated at an average of 3.67 out of 5 in our report for overall customer satisfaction. EarthLink wins for second-place in Maryland, with 3.50 out of 5 stars and 95.4% coverage in Adelphi.
At a national level, based on 4245 national reviews for any of the providers listed above, T-Mobile Home Internet is rated higher than any other provider, with a rating of 4.04 out of 5.
Which Providers are Available at my Home in Adelphi?
a different provider.

Internet Availability Key
Speeds and coverage vary within the city, and sometimes even from block to block. The map shows speeds per provider and where each provider is available.
Who is the Fastest Internet Provider in Adelphi?
According to unbiased feedback from real internet customers in the city, they reported being happiest with speeds provided by Verizon. On the other hand, based on data provided by the internet providers to the FCC, XFINITY from Comcast should have faster speeds at a local level. While we typically put more weight on real-world customer ratings, we display both satisfaction and technical maximum information for customers to decide for themselves.
Data Reported to FCC by ISPs: Average Maximum Available in Adelphi
| ISP / Tech Type | Max Advertised Speed | ||
|---|---|---|---|
| EarthLink | 2,048 Mbps | ||
| Verizon | 2,048 Mbps | ||
| XFINITY from Comcast | 2,000 Mbps | ||
| Astound Broadband | 1,500 Mbps | ||
| AT&T | 100 Mbps | ||
| T-Mobile Home Internet | 100 Mbps | ||
| Viasat | 100 Mbps | ||
| HughesNet | 25 Mbps | ||
| Believe Wireless | 10 Mbps |
Customer Ratings for Internet Provider Speeds in Adelphi
| ISP / Tech Type | Adelphi Speed | Maryland Speed | National Speed | For Service | ||
|---|---|---|---|---|---|---|
| Verizon | (0) | (61) | (723) | View Plans | ||
| XFINITY | (0) | (65) | (2164) | View Plans | ||
| EarthLink | (0) | (2) | (12) | View Plans | ||
| AT&T | (0) | (3) | (924) | View Plans | ||
| T-Mobile Home Internet | (0) | (9) | (284) | View Plans | ||
| Astound Broadband | (0) | (2) | (109) | View Plans | ||
| HughesNet | (0) | (1) | (18) | View Plans | ||
| Viasat | (0) | (0) | (11) | View Plans | ||
| Believe Wireless | (0) | (0) | (0) | View Plans |
Based on data reported by Adelphi ISPs to the FCC, the fastest speeds in the city are available through XFINITY from Comcast. The company offers speeds up to 2,048 Mbps in Adelphi. Therefore, the average customer can get up to 1,963 Mbps if they're willing to purchase the fastest subscription tier available at their homes.
Additionally, actual customers in the city rated their satisfaction with internet speed highest with Verizon. This indicates Verizon reliably delivers speeds expected by the customer based on the plan they are paying for.
Who is the Cheapest Internet Provider in Adelphi?
Maryland customers rate EarthLink as the cheapest internet service provider in state. Data comes from customers in the state rating their satisfaction with pricing. This feedback is valuable because it considers price changes and whether the speeds paid for are worth it.
EarthLink received a local rating of 3.50 out of 5, which is much lower than the average across all internet providers in the country. Verizon is rated in second place for affordability by the company’s Adelphi customers with an average price rating of 3.48 out of 5.
The chart and graph below show how customers in Adelphi, Maryland, and the United States rated the affordability of their internet service.
Rated Affordability in Adelphi
| ISP / Tech Type | Adelphi Affordability | Maryland Affordability | National Affordability | For Service | ||
|---|---|---|---|---|---|---|
| EarthLink | (0) | (2) | (12) | View Plans | ||
| Verizon | (0) | (61) | (723) | View Plans | ||
| XFINITY | (0) | (65) | (2164) | View Plans | ||
| AT&T | (0) | (3) | (924) | View Plans | ||
| T-Mobile Home Internet | (0) | (9) | (284) | View Plans | ||
| HughesNet | (0) | (1) | (18) | View Plans | ||
| Astound Broadband | (0) | (2) | (109) | View Plans | ||
| Viasat | (0) | (0) | (11) | View Plans | ||
| Believe Wireless | (0) | (0) | (0) | View Plans |
Adelphi Internet Health Assessment
ISP Reports evaluates the technological infrastructure across the United States. This includes assessing a grade for ISP providers and infrastructure in the city and setting an index number for the digital connectivity of its residents. You can view the ISP Report Card and the Digital Connectivity Index for Adelphi below, including the metrics used and how Adelphi compares to the rest of Maryland and nation.
| Metric
(hover for details)
|
Adelphi | Maryland | USA | ||
|---|---|---|---|---|---|
| Fiber Availability Percent The percentage of households in Adelphi that have a Fiber internet connection available to their home. | 91.24% | 75.50% | 67.25% | ||
| Average Download SpeedThe maximum download speed most households can get on average. This is measured by availability in a block group and weighted by the population in that area. | 2,035 Mbps | 2,041 Mbps | 3,293 Mbps | ||
| Provider CountThe number of providers available for most people. This is a weighted average by block rather than a total for Adelphi. | 5.9 | 6.0 | 6.8 |
| Average Household SizeA larger household size in a city indicates that there will be a greater need for bandwidth due to simultaneous usage, multiple devices, and network congestion. | 3.3 | 2.7 | 2.7 | ||
| Work From Home PercentA higher percent of the population working from home indicates bandwidth requirements being more widely needed rather than consolidated to commercial portions of the city. | 11% | 17% | 14% | ||
| Households with DevicesA higher percentage of households with computing devices in the home indicates a higher level of infrastructure needed to support those households. | 100% | 96% | 95% | ||
| Households with InternetA higher percentage of households with internet indicates a higher need for usage and connectivity in people’s daily lives. | 93% | 92% | 90% | ||
| Households with BroadbandA higher percentage of households with a broadband connection (defined as speeds above 25 Mbps) indicates heavier usage needs within these households. | 78% | 80% | 75% | ||
| Broadband Usage vs. AvailabilityThis measures what percentage of households who have a broadband connection to their home actually have an active subscription to that service. | 78% | 81% | 76% |
Our demographic data is sourced from the latest 5-year release of the American Community Survey by the US Census Bureau.
Adelphi ISP Report Card & Digital Connectivity Index
The ISP Report Card in Adelphi is B, which is better than other cities. The local demand for broadband internet connectivity in Adelphi is high with a score of 81 / 100 in our Digital Connectivity Index. This means that internet service providers operating in Adelphi have done a great job meeting the needs of its residents.
The Adelphi ISP Report Card evaluates the city on availability and speed metrics compared to other cities in the United States. ISP Infrastructure can vary greatly and on its own isn’t a perfect measure of what a city needs. Please see our ISP Report Card along with the Digital Connectivity Index above to evaluate how well the connectivity demand is met by the existing infrastructure.
93% of Adelphi households have an internet connection despite having 100.00% availability. 78% of households have fiber, cable, or DSL, 6% have satellite, 0% are still on dial-up, and 2% of households have internet but don’t pay for a subscription because it’s subsidized by the Affordable Connectivity Program.
As you can see in the table above, while 78% of households have a broadband connection such as fiber, cable or DSL available to their home, 78% subscribe to it. A large amount of Adelphi residents are taking advantage of the available internet infrastructure.
For more details, please visit our ISP Report Card and Digital Connectivity Index pages.
How do Neighboring Cities Compare to Adelphi?
- ISP Report Card: B-
- Digital Connectivity Index: 71 / 100
- ISP Report Card: B+
- Digital Connectivity Index: 87 / 100
- ISP Report Card: B+
- Digital Connectivity Index: 75 / 100
- ISP Report Card: A-
- Digital Connectivity Index: 92 / 100
- ISP Report Card: B+
- Digital Connectivity Index: 77 / 100
- ISP Report Card: B+
- Digital Connectivity Index: 90 / 100
- ISP Report Card: B
- Digital Connectivity Index: 84 / 100
- ISP Report Card: B+
- Digital Connectivity Index: 84 / 100
- ISP Report Card: B+
- Digital Connectivity Index: 94 / 100
How Much Speed does a Adelphi Household Need?
Higher speed is typically preferred, but that comes at a higher price. The average size of a household in Adelphi is 3.3, which is larger than the Maryland average of 2.7 and larger than the national average of 2.7. Adelphi's average household income is $98,694 which is about average for the Maryland average of $115,317 and much higher than the national average of $90,606. Homes with more people living in them and with higher incomes tend to indicate more devices being used more often.
Adelphi also has 20% of its population enrolled in school between the 6th grade and college level, this is higher than the Maryland average of 17%. Additionally, 11% of residents work from home, which is lower than the 17% of residents in Maryland who work from home. This and other factors you can see above show us that the community of Adelphi has a very high need for internet connectivity and speeds.
Compared to the rest of the country, Adelphi households are much more technology-engaged. 100% of households have some sort of computing device, 84% have desktops or laptops in the home, and 98% have smartphones. To see what speeds you are currently getting, please visit our internet speed test tool.
Which Fiber Internet Providers are Available in Adelphi?
EarthLink Fiber in Adelphi, MD
EarthLink offers Fiber service to 91.2% of Adelphi homes. Across the city, EarthLink Fiber has speeds up to 1,832 Mbps, with speeds from 940 Mpbs up to 2,048 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 880 and as high as 2,048, with an average of 1,821 Mbps throughout the city. EarthLink Fiber is rated about the same as other types of internet service available in Adelphi from EarthLink in terms of customer satisfaction.
Verizon Fiber in Adelphi, MD
Verizon offers Fiber service to 91.2% of Adelphi homes. Across the city, Verizon Fiber has speeds up to 1,832 Mbps, with speeds from 940 Mpbs up to 2,048 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 880 and as high as 2,048, with an average of 1,821 Mbps throughout the city. Verizon Fiber is rated about the same as other types of internet service available in Adelphi from Verizon in terms of customer satisfaction.
Which Cable Internet Providers are Available in Adelphi?
XFINITY Cable in Adelphi, MD
XFINITY from Comcast offers Cable service to 100.0% of Adelphi homes. Across the city, XFINITY Cable is the only type of service available from the company, with speeds up to 1,963 Mbps, with speeds from 1,200 Mpbs up to 2,000 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 35 and as high as 250, with an average of 240 Mbps throughout the city.
Astound Broadband Cable in Adelphi, MD
Astound Broadband offers Cable service to 11.2% of Adelphi homes. Across the city, Astound Broadband Cable is the only type of service available from the company, with speeds up to 1,500 Mbps
Which DSL Internet Providers are Available in Adelphi?
According to the most recently submitted data by internet service providers to the FCC, there are currently no DSL providers available in Adelphi, MD.
Which Fixed Wireless and LTE Internet Providers are Available in Adelphi?
T-Mobile Home Internet Fixed Wireless in Adelphi, MD
T-Mobile Home Internet offers Fixed Wireless service to 98.4% of Adelphi homes. Across the city, T-Mobile Home Internet Fixed Wireless is the only type of service available from the company, with speeds up to 67 Mbps, with speeds from 25 Mpbs up to 100 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 3.0 and as high as 20, with an average of 13 Mbps throughout the city.
EarthLink Fixed Wireless in Adelphi, MD
EarthLink offers Fixed Wireless service to 64.5% of Adelphi homes. Across the city, EarthLink Fixed Wireless has speeds up to 60 Mbps, with speeds from 25 Mpbs up to 100 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 3.0 and as high as 20, with an average of 11 Mbps throughout the city.
AT&T Fixed Wireless in Adelphi, MD
AT&T offers Fixed Wireless service to 64.5% of Adelphi homes. Across the city, AT&T Fixed Wireless is the only type of service available from the company, with speeds up to 60 Mbps, with speeds from 25 Mpbs up to 100 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 3.0 and as high as 20, with an average of 11 Mbps throughout the city.
Verizon Fixed Wireless in Adelphi, MD
Verizon offers Fixed Wireless service to 49.1% of Adelphi homes. Across the city, Verizon Fixed Wireless has speeds up to 730 Mbps, with speeds from 300 Mpbs up to 1,000 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 20 and as high as 75, with an average of 54 Mbps throughout the city.
Believe Wireless Fixed Wireless in Adelphi, MD
Believe Wireless offers Fixed Wireless service to 22.0% of Adelphi homes. Across the city, Believe Wireless Fixed Wireless is the only type of service available from the company, with speeds up to 10 Mbps
Which ISP Should You Choose in Adelphi?
The right ISP for you depends upon your needs, but in general we can make the following suggestions:
- The best all-around internet service provider in Adelphi is Verizon.
- The fastest internet provider should be XFINITY from Comcast. Considering speed for the money and reliability in speeds, Verizon may be a better choice based on real-world local customer feedback.
- The most affordable internet provider in Adelphi is EarthLink.
- XFINITY from Comcast, Viasat, Verizon, and HughesNet has the broadest coverage in Adelphi, and is most likely to cover your home. To find out exactly what's available at your home, please use our address search tool.
How does Adelphi compare to other cities with a similar population?
To see how Adelphi stacks up on the national level, it's useful to look at some other cities with similarly sized populations. Below you can see a list of these cities and how they compare to Adelphi's B ISP Report Card and 81 / 100 Digital Connectivity Index.
- ISP Report Card: B
- Digital Connectivity Index: 93 / 100
- ISP Report Card: C-
- Digital Connectivity Index: 56 / 100
- ISP Report Card: A-
- Digital Connectivity Index: 40 / 100
- ISP Report Card: C+
- Digital Connectivity Index: 55 / 100
- ISP Report Card: B
- Digital Connectivity Index: 50 / 100
- ISP Report Card: A-
- Digital Connectivity Index: 49 / 100
- ISP Report Card: B+
- Digital Connectivity Index: 57 / 100
- ISP Report Card: B+
- Digital Connectivity Index: 55 / 100
- ISP Report Card: B-
- Digital Connectivity Index: 76 / 100
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