In Williamsville there are 12 residential internet providers covering 99.19% of the city. The average home can get speeds up to 951 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.
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12 Internet Service Providers in Williamsville
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 Williamsville are not shown.
Williamsville 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
Availability maps for all providers in Williamsville
Using the dropdown below, please select a provider. Green indicates nearly all homes have service, red indicates few homes have service, and blank indicates no service.
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Internet service is available in 99.19% of Williamsville. Using our interactive availability map, you can compare service areas for different providers, we include fiber, cable, DSL, or fixed wireless internet service for all providers who offer it. You will notice that some providers might be listed multiple times for each service. If you find no providers cover the location you're looking at, you can opt for satellite service. The most widely available provider is CASSCOMM. Now you can call companies in Williamsville with more confidence that they might be available.
How fast are internet speeds in Williamsville?
The map below shows maximum internet speeds by area in Williamsville.
Internet Speed Key
The average Williamsville home can get up to 951 Mbps on their internet plan. For most people, the fastest download speed in the city is 1,200 Mbps, which 19.66% 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 100 Mbps. See the internet provider details below for info about their speed and coverage in Williamsville.
Internet speeds tend to be faster in the south parts of Williamsville, and slower in the northeast areas of the city.
What type of internet should I choose in Williamsville?
The fastest internet for you may vary based on where in Williamsville you live. If speed is your main concern, fiber will be the fastest internet in the city.
- Fiber is the fastest internet type for 85.43% of Williamsville homes.
- Cable is fastest for less than 1% of the city.
- DSL is fastest for less than 1%.
- Fixed wireless is fastest for 13.76%.
- Satellite internet may be the only option for less than 1% of Williamsville homes.
Internet Market Health in Williamsville
Internet Competition Key
The map shows how competitive the Williamsville internet service market is. Areas in green have more alternatives, areas in yellow have a few choices, and areas in red may have only one provider. More competition usually means faster speeds and better prices for you, the customer.
Below are quick facts on internet competition and market health in Williamsville based on what connections the average home has availabile:
- Average number of internet service providers to a home: 7.5 (very healthy)
- Average types of service (fiber, cable, DSL, etc): 2.7 (healthy)
- Average providers with broadband (25 Mbps+) speeds: 6.5 (very healthy)
Overall, competition is very healthy.
Williamsville internet customers have the ability to buy internet service from 2 to 10 different providers, depending on where they live. For different types of service, Williamsville homes have between 1 and 3 options. The type(s) of service available are fixed wireless, fiber, and dsl, though these may vary depending on the region within the city.
When it comes to broadband download speeds faster than 25 Mbps, the situation is worse. Williamsville internet customers who want faster speeds have between 1 and 9 choices of companies offering speeds up to or over 25 Mbps.
More internet companies with faster speeds means fewer monopolies and better prices for customers. In promoting a free market for internet, Williamsville is doing quite well.
TV & Internet Providers in Depth
Below you'll find which TV and internet providers offer service in Williamsville, along with details on where in Williamsville and at what speeds.
CASSCOMM Fiber in Williamsville, IL
CASSCOMM fiber coverage
About 85.43%, or 1,577 people, have CASSCOMM fiber internet available to them in the city. The company covers the central, south, east, southwest, west, southeast, and north Williamsville area. CASSCOMM is a large internet service provider internet service providers in the US, with internet service available in most of Williamsville.
CASSCOMM fiber download speeds
CASSCOMM is above average when comparing download speeds to all other internet providers in Williamsville. Versus other fiber providers in the area, CASSCOMM fiber is the slowest. There are no different maximum speeds throughout Williamsville. The fastest plan anyone in Williamsville can order from CASSCOMM goes up to 1,000 Mbps, and all Williamsville customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
CASSCOMM fiber upload speeds
In Williamsville download speeds tend to be equal to than upload speeds for CASSCOMM fiber. Compared to other ISPs, CASSCOMM is the fastest where upload speeds are concerned, and the fastest compared to other Williamsville fiber providers. CASSCOMM offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Williamsville is up to 1,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 1,000.0 Mbps
Frontier Communications DSL in Williamsville, IL
Frontier DSL coverage
About 84.40%, or 1,558 people, have Frontier DSL internet available to them in the city. The company covers the entire Williamsville area. Frontier is one of the largest internet service providers internet service providers in the US, with internet service available in much of Williamsville.
Frontier Communications DSL download speeds
Frontier is the slowest when comparing download speeds to all other internet providers in Williamsville. Versus other DSL providers in the area, Frontier DSL is the fastest. There are no different maximum speeds throughout Williamsville. The fastest plan anyone in Williamsville can order from Frontier goes up to 10 Mbps, and all Williamsville customers can get this speed.
Show all download speeds
- 100.0% up to 10.0 Mbps
Frontier Communications DSL upload speeds
In Williamsville download speeds tend to be faster than than upload speeds for Frontier DSL. Compared to other ISPs, Frontier is the slowest where upload speeds are concerned, and the fastest compared to other Williamsville DSL providers. Frontier offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Williamsville is up to 1.0 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 1.0 Mbps
XFINITY from Comcast Fiber in Williamsville, IL
XFINITY fiber coverage
About 19.66%, or 363 people, have XFINITY fiber internet available to them in the city. The company covers the south and central Williamsville area. XFINITY is one of the largest internet service providers internet service providers in the US, with internet service available in a small portion of Williamsville.
XFINITY from Comcast fiber download speeds
XFINITY is the fastest when comparing download speeds to all other internet providers in Williamsville. Versus other fiber providers in the area, XFINITY fiber is the fastest. There are no different maximum speeds throughout Williamsville. The fastest plan anyone in Williamsville can order from XFINITY goes up to 1,200 Mbps, and all Williamsville customers can get this speed.
Show all download speeds
- 100.0% up to 1,200.0 Mbps
XFINITY from Comcast fiber upload speeds
In Williamsville 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 the slowest compared to other Williamsville fiber providers. XFINITY 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 Williamsville 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 718 Mbps.
Show all upload speeds
- 70.8% up to 1,000.0 Mbps
- 29.2% up to 35.0 Mbps
Rise Broadband Fixed Wireless in Williamsville, IL
Rise Broadband fixed wireless coverage
About 98.21%, or 1,813 people, have Rise Broadband fixed wireless internet available to them in the city. The company covers the entire Williamsville area. Rise Broadband is one of the largest internet service providers internet service providers in the US, with internet service available in most of Williamsville.
Rise Broadband fixed wireless download speeds
Rise Broadband is below average when comparing download speeds to all other internet providers in Williamsville. Versus other fixed wireless providers in the area, Rise Broadband fixed wireless is below average. There are 5 different maximum speeds throughout Williamsville. The fastest plan anyone in Williamsville can order from Rise Broadband goes up to 400 Mbps, the slowest package only goes up to 10 Mbps, and the city-wide average maximum speed for Williamsville customers is up to 54 Mbps.
Show all download speeds
- 3.9% up to 400.0 Mbps
- 0.8% up to 100.0 Mbps
- 66.6% up to 50.0 Mbps
- 11.5% up to 25.0 Mbps
- 17.2% up to 10.0 Mbps
Rise Broadband fixed wireless upload speeds
In Williamsville download speeds tend to be faster than than upload speeds for Rise Broadband fixed wireless. Compared to other ISPs, Rise Broadband is below average where upload speeds are concerned, and below average compared to other Williamsville fixed wireless providers. Rise Broadband offers 5 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 Williamsville is up to 80 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, Rise Broadband customers can get speeds up to 11 Mbps.
Show all upload speeds
- 3.9% up to 80.0 Mbps
- 0.8% up to 20.0 Mbps
- 66.6% up to 10.0 Mbps
- 11.5% up to 5.0 Mbps
- 17.2% up to 1.0 Mbps
Verizon Fixed Wireless in Williamsville, IL
Verizon fixed wireless coverage
About 90.63%, or 1,673 people, have Verizon fixed wireless internet available to them in the city. The company covers the entire Williamsville area. Verizon is one of the largest internet service providers internet service providers in the US, with internet service available in most of Williamsville.
Verizon fixed wireless download speeds
Verizon is average when comparing download speeds to all other internet providers in Williamsville. Versus other fixed wireless providers in the area, Verizon fixed wireless is the fastest. There are no different maximum speeds throughout Williamsville. The fastest plan anyone in Williamsville can order from Verizon goes up to 300 Mbps, and all Williamsville customers can get this speed.
Show all download speeds
- 100.0% up to 300.0 Mbps
Verizon fixed wireless upload speeds
In Williamsville download speeds tend to be faster than than upload speeds for Verizon fixed wireless. Compared to other ISPs, Verizon is below average where upload speeds are concerned, and average compared to other Williamsville fixed wireless providers. Verizon offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Williamsville is up to 20 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 20.0 Mbps
EarthLink Fixed Wireless in Williamsville, IL
EarthLink fixed wireless coverage
About 89.00%, or 1,643 people, have EarthLink fixed wireless internet available to them in the city. The company covers the entire Williamsville area. EarthLink is one of the largest internet service providers internet service providers in the US, with internet service available in most of Williamsville.
EarthLink fixed wireless download speeds
EarthLink is below average when comparing download speeds to all other internet providers in Williamsville. Versus other fixed wireless providers in the area, EarthLink fixed wireless is below average. There are 2 different maximum speeds throughout Williamsville. The fastest plan anyone in Williamsville can order from EarthLink goes up to 100 Mbps, the slowest package only goes up to 25 Mbps, and the city-wide average maximum speed for Williamsville customers is up to 76 Mbps.
Show all download speeds
- 67.9% up to 100.0 Mbps
- 32.1% up to 25.0 Mbps
EarthLink fixed wireless upload speeds
In Williamsville download speeds tend to be faster than than upload speeds for EarthLink fixed wireless. Compared to other ISPs, EarthLink is below average where upload speeds are concerned, and below average compared to other Williamsville fixed wireless 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 Williamsville is up to 20 Mbps. Some customers have slower plan choices, which only go up to 3.0 Mbps. On average, EarthLink customers can get speeds up to 15 Mbps.
Show all upload speeds
- 67.9% up to 20.0 Mbps
- 32.1% up to 3.0 Mbps
AT&T Fixed Wireless in Williamsville, IL
AT&T fixed wireless coverage
About 89.00%, or 1,643 people, have AT&T fixed wireless internet available to them in the city. The company covers the entire Williamsville area. AT&T is one of the largest internet service providers internet service providers in the US, with internet service available in most of Williamsville.
AT&T fixed wireless download speeds
AT&T is below average when comparing download speeds to all other internet providers in Williamsville. Versus other fixed wireless providers in the area, AT&T fixed wireless is below average. There are 2 different maximum speeds throughout Williamsville. The fastest plan anyone in Williamsville can order from AT&T goes up to 100 Mbps, the slowest package only goes up to 25 Mbps, and the city-wide average maximum speed for Williamsville customers is up to 76 Mbps.
Show all download speeds
- 67.9% up to 100.0 Mbps
- 32.1% up to 25.0 Mbps
AT&T fixed wireless upload speeds
In Williamsville download speeds tend to be faster than than upload speeds for AT&T fixed wireless. Compared to other ISPs, AT&T is below average where upload speeds are concerned, and below average compared to other Williamsville fixed wireless providers. AT&T 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 Williamsville is up to 20 Mbps. Some customers have slower plan choices, which only go up to 3.0 Mbps. On average, AT&T customers can get speeds up to 15 Mbps.
Show all upload speeds
- 67.9% up to 20.0 Mbps
- 32.1% up to 3.0 Mbps
Community Fiber Solutions (CFS) Fixed Wireless in Williamsville, IL
Community Fiber Solutions fixed wireless coverage
About 72.75%, or 1,343 people, have Community Fiber Solutions fixed wireless internet available to them in the city. The company covers the entire Williamsville area. Community Fiber Solutions is a large internet service provider internet service providers in the US, with internet service available in much of Williamsville.
Community Fiber Solutions (CFS) fixed wireless download speeds
Community Fiber Solutions is below average when comparing download speeds to all other internet providers in Williamsville. Versus other fixed wireless providers in the area, Community Fiber Solutions fixed wireless is below average. There are no different maximum speeds throughout Williamsville. The fastest plan anyone in Williamsville can order from Community Fiber Solutions goes up to 100 Mbps, and all Williamsville customers can get this speed.
Show all download speeds
- 100.0% up to 100.0 Mbps
Community Fiber Solutions (CFS) fixed wireless upload speeds
In Williamsville download speeds tend to be faster than than upload speeds for Community Fiber Solutions fixed wireless. Compared to other ISPs, Community Fiber Solutions is below average where upload speeds are concerned, and average compared to other Williamsville fixed wireless providers. Community Fiber Solutions offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Williamsville is up to 20 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 20.0 Mbps
Nextlink Fixed Wireless in Williamsville, IL
Nextlink fixed wireless coverage
About 61.32%, or 1,132 people, have Nextlink fixed wireless internet available to them in the city. The company covers the entire Williamsville area. Nextlink is one of the largest internet service providers internet service providers in the US, with internet service available in a majority of Williamsville.
Nextlink fixed wireless download speeds
Nextlink is below average when comparing download speeds to all other internet providers in Williamsville. Versus other fixed wireless providers in the area, Nextlink fixed wireless is above average. There are 4 different maximum speeds throughout Williamsville. The fastest plan anyone in Williamsville can order from Nextlink goes up to 700 Mbps, the slowest package only goes up to 100 Mbps, and the city-wide average maximum speed for Williamsville customers is up to 158 Mbps.
Show all download speeds
- 7.5% up to 700.0 Mbps
- 1.9% up to 500.0 Mbps
- 2.7% up to 300.0 Mbps
- 87.9% up to 100.0 Mbps
Nextlink fixed wireless upload speeds
In Williamsville download speeds tend to be faster than than upload speeds for Nextlink fixed wireless. Compared to other ISPs, Nextlink is below average where upload speeds are concerned, and the fastest compared to other Williamsville fixed wireless providers. Nextlink offers 4 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 Williamsville is up to 300 Mbps. Some customers have slower plan choices, which only go up to 20 Mbps. On average, Nextlink customers can get speeds up to 47 Mbps.
Show all upload speeds
- 7.5% up to 300.0 Mbps
- 1.9% up to 200.0 Mbps
- 2.7% up to 100.0 Mbps
- 87.9% up to 20.0 Mbps
T-Mobile Home Internet Fixed Wireless in Williamsville, IL
T-Mobile Home Internet fixed wireless coverage
About 51.68%, or 954 people, have T-Mobile Home Internet fixed wireless internet available to them in the city. The company covers the south, central, southwest, southeast, northeast, north, and east Williamsville area. T-Mobile Home Internet is one of the largest internet service providers internet service providers in the US, with internet service available in a majority of Williamsville.
T-Mobile Home Internet fixed wireless download speeds
T-Mobile Home Internet is below average when comparing download speeds to all other internet providers in Williamsville. Versus other fixed wireless providers in the area, T-Mobile Home Internet fixed wireless is the slowest. There are 2 different maximum speeds throughout Williamsville. The fastest plan anyone in Williamsville can order from T-Mobile Home Internet goes up to 100 Mbps, the slowest package only goes up to 25 Mbps, and the city-wide average maximum speed for Williamsville customers is up to 32 Mbps.
Show all download speeds
- 8.8% up to 100.0 Mbps
- 91.2% up to 25.0 Mbps
T-Mobile Home Internet fixed wireless upload speeds
In Williamsville download speeds tend to be faster than than upload speeds for T-Mobile Home Internet fixed wireless. Compared to other ISPs, T-Mobile Home Internet is below average where upload speeds are concerned, and the slowest compared to other Williamsville fixed wireless providers. T-Mobile Home Internet 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 Williamsville is up to 20 Mbps. Some customers have slower plan choices, which only go up to 3.0 Mbps. On average, T-Mobile Home Internet customers can get speeds up to 4.5 Mbps.
Show all upload speeds
- 8.8% up to 20.0 Mbps
- 91.2% up to 3.0 Mbps
Williamsville Internet by Area
This information is most helpful to those looking for homes or considering moving to Williamsville or any of the areas nearby.
How does internet in Williamsville compare to the rest of Illinois?
Internet speeds in Williamsville are slower versus the average speeds in Illinois: 2,791 Mbps in Illinois versus 951 Mbps in the city. The state has similar internet availability compared to the city. Average internet coverage in Illinois is 99.02% versus 99.19% in Williamsville.
What zip codes have widespread internet?
Internet coverage varies by zip code and neighborhood. Some examples in or around Williamsville are shown below. You can enter any zip code here to see TV and internet providers by zip code.
What does internet service 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
- Fancy Prairie, IL: more internet coverage, slower speeds
- Sherman, IL: more internet coverage, faster speeds
- Spaulding, IL: more internet coverage, faster speeds
- Devereux Heights, IL: more internet coverage, faster speeds
- Riverton, IL: more internet coverage, faster speeds
- Bissell, IL: more internet coverage, faster speeds
- Cornland, IL: less internet coverage, slower speeds
- Cantrall, IL: more internet coverage, slower speeds
- Green Acres, IL: more internet coverage, slower speeds
- Clear Lake, IL: more internet coverage, faster speeds
Cities with Similar Populations
- Seward, PA: less internet coverage, faster speeds
- Fountainville, PA: more internet coverage, faster speeds
- Glendale, KY: more internet coverage, faster speeds
- Grasston, MN: more internet coverage, faster speeds
- Hardee Cross Roads, NC: more internet coverage, faster speeds
- Hernandez, NM: less internet coverage, slower speeds
- Imboden, AR: more internet coverage, faster speeds
- Kensett, AR: more internet coverage, faster speeds
- Addison, AL: more internet coverage, faster speeds
- Lawrence, PA: more internet coverage, faster speeds