In Potomac there is 1 residential Cable provider covering 99.98% of the city. The average home can get speeds up to 1,865 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 Cable internet providers in Potomac, MD.
To see availability maps for all providers including fiber, cable, DSL, and more in Potomac, MD please click below.
Cable Internet Service Provider in Potomac
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 Potomac are not shown.
Potomac 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 Potomac is cable internet available?
Cable Internet Availability Key
Cable is available in 99.98% of Potomac. Areas in green have cable 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 Potomac above to see who has service at your home.
How fast is cable internet in Potomac?
The map below shows maximum cable internet speeds by area in Potomac.
Cable Internet Speed Key
The average Potomac home can get up to 1,865 Mbps on their cable internet plan. The fastest cable download speed in the city is 2,000 Mbps, which 83.13% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, 16.85% of homes can only purchase plans up to 1,200 Mbps. See the internet provider details below for info about their speed and coverage in Potomac.
Cable internet speeds tend to be faster in the east parts of Potomac, and slower in the southwest areas of the city.
Is cable the fastest internet I can get in Potomac?
The fastest internet for you may vary based on where in Potomac you live. In general, fiber competes most often with cable in the city.
- Fiber is the fastest internet type for 14.46% of Potomac homes.
- Cable is fastest for 85.51% 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 Potomac homes.
Cable Providers in Depth
Below you'll find which TV and internet providers offer service in Potomac, along with details on where in Potomac and at what speeds.
XFINITY from Comcast Cable in Potomac, MD
XFINITY cable coverage
About 99.98%, or 53,389 people, have XFINITY cable internet available to them in the city. The company covers the entire Potomac area. XFINITY is one of the largest internet service providers internet service providers in the US, with internet service available in most of Potomac.
XFINITY from Comcast cable download speeds
XFINITY is the fastest when comparing download speeds to all other internet providers in Potomac. Versus other cable providers in the area, XFINITY cable is the fastest. There are 2 different maximum speeds throughout Potomac. The fastest plan anyone in Potomac can order from XFINITY goes up to 2,000 Mbps, the slowest package only goes up to 1,200 Mbps, and the city-wide average maximum speed for Potomac customers is up to 1,865 Mbps.
Show all download speeds
- 83.2% up to 2,000.0 Mbps
- 16.8% up to 1,200.0 Mbps
XFINITY from Comcast cable upload speeds
In Potomac download speeds tend to be faster than than upload speeds for XFINITY cable. Compared to other ISPs, XFINITY is below average where upload speeds are concerned, and the fastest compared to other Potomac cable providers. XFINITY offers 3 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 Potomac is up to 2,000 Mbps. Some customers have slower plan choices, which only go up to 35 Mbps. On average, XFINITY customers can get speeds up to 251 Mbps.
Show all upload speeds
- 2.1% up to 2,000.0 Mbps
- 81.0% up to 250.0 Mbps
- 16.8% up to 35.0 Mbps
Potomac Cable by Area
This information is most helpful to those looking for homes or considering moving to Potomac or any of the areas nearby.
How does cable internet in Potomac compare to the rest of Maryland?
Cable internet speeds in Potomac are much faster versus the average speeds in Maryland: 0.00 Mbps in Maryland versus 1,865 Mbps in the city. The state has similar cable availability compared to the city. Average cable coverage in Maryland is 0.00% versus 99.98% in Potomac.
What zip codes have cable internet?
Cable internet coverage varies by zip code and neighborhood. Some examples in or around Potomac are shown below. You can enter any zip code here to see TV and internet providers by zip code.
What does cable 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
- North Bethesda, MD: less cable coverage, faster speeds
- Travilah, MD: less cable coverage, slower speeds
- Rockville, MD: less cable coverage, faster speeds
- Cabin John, MD: more cable coverage, faster speeds
- Garrett Park, MD: more cable coverage, faster speeds
- Glen Echo, MD: less cable coverage, faster speeds
- Bethesda, MD: less cable coverage, faster speeds
- Kensington, MD: more cable coverage, faster speeds
- Chevy Chase View, MD: more cable coverage, faster speeds
- South Kensington, MD: more cable coverage, faster speeds
Cities with Similar Populations
- Asheboro, NC: less cable coverage, slower speeds
- Winter Park, FL: less cable coverage, slower speeds
- Winter Garden, FL: less cable coverage, slower speeds
- West Sacramento, CA: less cable coverage, slower speeds
- West Chester, OH: less cable coverage, slower speeds
- Webster, NY: less cable coverage, slower speeds
- Vero Beach, FL: less cable coverage, slower speeds
- Union, NJ: less cable coverage, faster speeds
- Tooele, UT: less cable coverage, faster speeds
- Sterling, VA: less cable coverage, slower speeds