In St. Mary's County there are 3 residential Fiber providers covering 63.20% of the county. The average home can get speeds up to 1,382 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 St. Mary's County, MD.
To see availability maps for all providers including fiber, cable, DSL, and more in St. Mary's County, MD please click below.
St. Mary's County, MD Availability Maps
Fiber Internet Service Providers in St. Mary's County
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 St. Mary's County are not shown.
St. Mary's County 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 St. Mary's County is fiber internet available?
Fiber Internet Availability Key
Fiber is available in 63.20% of St. Mary's County. Areas in green have fiber internet service, where areas in yellow or red may not. The most widely available provider is XFINITY. Call one of the companies with service in St. Mary's County above to see who has service at your home.
How fast is fiber internet in St. Mary's County?
The map below shows maximum fiber internet speeds by area in St. Mary's County.
Fiber Internet Speed Key
The average St. Mary's County home can get up to 1,382 Mbps on their fiber internet plan. The fastest fiber download speed in the county is 2,048 Mbps, which 15.94% 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 940 Mbps. See the internet provider details below for info about their speed and coverage in St. Mary's County.
Fiber internet speeds tend to be faster in the southeast parts of St. Mary's County, and slower in the west areas of the county.
Is fiber the fastest internet I can get in St. Mary's County?
The fastest internet for you may vary based on where in St. Mary's County you live. In general, cable competes most often with fiber in the county.
- Fiber is the fastest internet type for 60.84% of St. Mary's County homes.
- Cable is fastest for 36.87% of the county.
- DSL is fastest for less than 1%.
- Fixed wireless is fastest for less than 1%.
- Satellite internet may be the only option for 2.10% of St. Mary's County homes.
Fiber Providers in Depth
Below you'll find which TV and internet providers offer service in St. Mary's County, along with details on where in St. Mary's County and at what speeds.
XFINITY from Comcast Fiber in St. Mary's County, MD
XFINITY fiber coverage
About 52.88%, or 60,163 people, have XFINITY fiber internet available to them in the county. The company covers the entire St. Mary's County area. XFINITY is one of the largest internet service providers internet service providers in the US, with internet service available in a majority of St. Mary's County.
XFINITY from Comcast fiber download speeds
XFINITY is above average when comparing download speeds to all other internet providers in St. Mary's County. Versus other fiber providers in the area, XFINITY fiber is below average. There are 3 different maximum speeds throughout St. Mary's County. The fastest plan anyone in St. Mary's County can order from XFINITY goes up to 2,000 Mbps, the slowest package only goes up to 1,000 Mbps, and the county-wide average maximum speed for St. Mary's County customers is up to 1,144 Mbps.
Show all download speeds
- 12.3% up to 2,000.0 Mbps
- 10.4% up to 1,200.0 Mbps
- 77.3% up to 1,000.0 Mbps
XFINITY from Comcast fiber upload speeds
In St. Mary's County download speeds tend to be faster than than upload speeds for XFINITY fiber. Compared to other ISPs, XFINITY is above average where upload speeds are concerned, and below average compared to other St. Mary's County fiber providers. XFINITY offers 3 different upload speeds across the county, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in St. Mary's County is up to 1,000 Mbps. Some customers have slower plan choices, which only go up to 35 Mbps. On average, XFINITY customers can get speeds up to 948 Mbps.
Show all upload speeds
- 93.7% up to 1,000.0 Mbps
- 4.3% up to 250.0 Mbps
- 2.0% up to 35.0 Mbps
EarthLink Fiber in St. Mary's County, MD
EarthLink fiber coverage
About 18.78%, or 21,372 people, have EarthLink fiber internet available to them in the county. The company covers the southeast, east, central, and south St. Mary's County area. EarthLink is one of the largest internet service providers internet service providers in the US, with internet service available in a small portion of St. Mary's County.
EarthLink fiber download speeds
EarthLink is one of the fastest when comparing download speeds to all other internet providers in St. Mary's County. Versus other fiber providers in the area, EarthLink fiber is one of the fastest. There are 2 different maximum speeds throughout St. Mary's County. The fastest plan anyone in St. Mary's County can order from EarthLink goes up to 2,048 Mbps, the slowest package only goes up to 940 Mbps, and the county-wide average maximum speed for St. Mary's County customers is up to 1,880 Mbps.
Show all download speeds
- 84.9% up to 2,048.0 Mbps
- 15.1% up to 940.0 Mbps
EarthLink fiber upload speeds
In St. Mary's County 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 St. Mary's County fiber providers. EarthLink offers 2 different upload speeds across the county, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in St. Mary's County 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 1,871 Mbps.
Show all upload speeds
- 84.9% up to 2,048.0 Mbps
- 15.1% up to 880.0 Mbps
Verizon Fiber in St. Mary's County, MD
Verizon fiber coverage
About 18.78%, or 21,372 people, have Verizon fiber internet available to them in the county. The company covers the southeast, east, central, and south St. Mary's County area. Verizon is one of the largest internet service providers internet service providers in the US, with internet service available in a small portion of St. Mary's County.
Verizon fiber download speeds
Verizon is one of the fastest when comparing download speeds to all other internet providers in St. Mary's County. Versus other fiber providers in the area, Verizon fiber is one of the fastest. There are 2 different maximum speeds throughout St. Mary's County. The fastest plan anyone in St. Mary's County can order from Verizon goes up to 2,048 Mbps, the slowest package only goes up to 940 Mbps, and the county-wide average maximum speed for St. Mary's County customers is up to 1,880 Mbps.
Show all download speeds
- 84.9% up to 2,048.0 Mbps
- 15.1% up to 940.0 Mbps
Verizon fiber upload speeds
In St. Mary's County 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 St. Mary's County fiber providers. Verizon offers 2 different upload speeds across the county, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in St. Mary's County 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 1,871 Mbps.
Show all upload speeds
- 84.9% up to 2,048.0 Mbps
- 15.1% up to 880.0 Mbps
St. Mary's County Fiber by Area
This information is most helpful to those looking for homes or considering moving to St. Mary's County or any of the areas nearby.
How does fiber internet in St. Mary's County compare to the rest of Maryland?
Fiber internet speeds in St. Mary's County are much faster versus the average speeds in Maryland: 0.00 Mbps in Maryland versus 1,382 Mbps in the county. The state has similar fiber availability compared to the county. Average fiber coverage in Maryland is 0.00% versus 63.20% in St. Mary's County.
What zip codes have fiber internet?
Fiber internet coverage varies by zip code and neighborhood. Some examples in or around St. Mary's County 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 counties?
Below are counties nearby and with similar populations. This comparison can be useful if living somewhere with fast internet is important to you.
Nearby Counties
- King George County, VA: less fiber coverage, slower speeds
- Stafford County, VA: more fiber coverage, faster speeds
- Fredericksburg City, VA: more fiber coverage, slower speeds
- Wicomico County, MD: less fiber coverage, faster speeds
- Spotsylvania County, VA: more fiber coverage, slower speeds
- Worcester County, MD: less fiber coverage, faster speeds
- Orange County, VA: more fiber coverage, slower speeds
- Culpeper County, VA: less fiber coverage, faster speeds
- Madison County, VA: less fiber coverage, slower speeds
- Greene County, VA: less fiber coverage, slower speeds
Counties with Similar Populations
- Berkeley County, WV: less fiber coverage, faster speeds
- Blair County, PA: less fiber coverage, faster speeds
- Comanche County, OK: more fiber coverage, faster speeds
- Carroll County, GA: more fiber coverage, faster speeds
- Rockwall County, TX: more fiber coverage, faster speeds
- Sheboygan County, WI: less fiber coverage, faster speeds
- Potter County, TX: more fiber coverage, faster speeds
- Oswego County, NY: less fiber coverage, faster speeds
- Ontario County, NY: more fiber coverage, faster speeds
- Newton County, GA: more fiber coverage, faster speeds