In Alton there are 4 residential Fiber providers covering 66.36% of the city. The average home can get speeds up to 5,412 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 Alton, IL.
To see availability maps for all providers including fiber, cable, DSL, and more in Alton, IL please click below.
Fiber Internet Service Providers in Alton
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 Alton are not shown.
Alton 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 Alton is fiber internet available?
Fiber Internet Availability Key
Fiber is available in 66.36% of Alton. Areas in green have fiber internet service, where areas in yellow or red may not. The most widely available provider is AT&T. Call one of the companies with service in Alton above to see who has service at your home.
How fast is fiber internet in Alton?
The map below shows maximum fiber internet speeds by area in Alton.
Fiber Internet Speed Key
The average Alton home can get up to 5,412 Mbps on their fiber internet plan. The fastest fiber download speed in the city is 7,000 Mbps, which 27.39% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, 6.86% of homes can only purchase plans up to 1,000 Mbps. See the internet provider details below for info about their speed and coverage in Alton.
Fiber internet speeds tend to be faster in the south parts of Alton, and slower in the east areas of the city.
Is fiber the fastest internet I can get in Alton?
The fastest internet for you may vary based on where in Alton you live. In general, cable competes most often with fiber in the city.
- Fiber is the fastest internet type for 66.36% of Alton homes.
- Cable is fastest for 32.14% 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 Alton homes.
Fiber Providers in Depth
Below you'll find which TV and internet providers offer service in Alton, along with details on where in Alton and at what speeds.
EarthLink Fiber in Alton, IL
EarthLink fiber coverage
About 49.19%, or 12,862 people, have EarthLink fiber internet available to them in the city. The company covers the entire Alton area. EarthLink is one of the largest internet service providers internet service providers in the US, with internet service available in some of Alton.
EarthLink fiber download speeds
EarthLink is above average when comparing download speeds to all other internet providers in Alton. Versus other fiber providers in the area, EarthLink fiber is above average. There are 2 different maximum speeds throughout Alton. The fastest plan anyone in Alton can order from EarthLink goes up to 5,000 Mbps, the slowest package only goes up to 1,000 Mbps, and the city-wide average maximum speed for Alton customers is up to 4,371 Mbps.
Show all download speeds
- 84.3% up to 5,000.0 Mbps
- 15.7% up to 1,000.0 Mbps
EarthLink fiber upload speeds
In Alton download speeds tend to be equal to than upload speeds for EarthLink fiber. Compared to other ISPs, EarthLink is above average where upload speeds are concerned, and above average compared to other Alton 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 Alton is up to 5,000 Mbps. Some customers have slower plan choices, which only go up to 1,000 Mbps. On average, EarthLink customers can get speeds up to 4,371 Mbps.
Show all upload speeds
- 84.3% up to 5,000.0 Mbps
- 15.7% up to 1,000.0 Mbps
AT&T Fiber in Alton, IL
AT&T fiber coverage
About 49.19%, or 12,862 people, have AT&T fiber internet available to them in the city. The company covers the entire Alton area. AT&T is one of the largest internet service providers internet service providers in the US, with internet service available in some of Alton.
AT&T fiber download speeds
AT&T is above average when comparing download speeds to all other internet providers in Alton. Versus other fiber providers in the area, AT&T fiber is above average. There are 2 different maximum speeds throughout Alton. The fastest plan anyone in Alton can order from AT&T goes up to 5,000 Mbps, the slowest package only goes up to 1,000 Mbps, and the city-wide average maximum speed for Alton customers is up to 4,371 Mbps.
Show all download speeds
- 84.3% up to 5,000.0 Mbps
- 15.7% up to 1,000.0 Mbps
AT&T fiber upload speeds
In Alton download speeds tend to be equal to than upload speeds for AT&T fiber. Compared to other ISPs, AT&T is above average where upload speeds are concerned, and above average compared to other Alton fiber 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 Alton is up to 5,000 Mbps. Some customers have slower plan choices, which only go up to 1,000 Mbps. On average, AT&T customers can get speeds up to 4,371 Mbps.
Show all upload speeds
- 84.3% up to 5,000.0 Mbps
- 15.7% up to 1,000.0 Mbps
Sparklight Fiber in Alton, IL
Sparklight fiber coverage
About 27.39%, or 7,163 people, have Sparklight fiber internet available to them in the city. The company covers the entire Alton area. Sparklight is one of the largest internet service providers internet service providers in the US, with internet service available in a small portion of Alton.
Sparklight fiber download speeds
Sparklight is the fastest when comparing download speeds to all other internet providers in Alton. Versus other fiber providers in the area, Sparklight fiber is the fastest. There are no different maximum speeds throughout Alton. The fastest plan anyone in Alton can order from Sparklight goes up to 7,000 Mbps, and all Alton customers can get this speed.
Show all download speeds
- 100.0% up to 7,000.0 Mbps
Sparklight fiber upload speeds
In Alton download speeds tend to be equal to than upload speeds for Sparklight fiber. Compared to other ISPs, Sparklight is the fastest where upload speeds are concerned, and the fastest compared to other Alton fiber providers. Sparklight offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Alton is up to 7,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 7,000.0 Mbps
Spectrum Fiber in Alton, IL
Spectrum fiber coverage
About 3.29%, or 859 people, have Spectrum fiber internet available to them in the city. The company covers the northeast Alton area. Spectrum is one of the largest internet service providers internet service providers in the US, with internet service available in a very small piece of Alton.
Spectrum fiber download speeds
Spectrum is below average when comparing download speeds to all other internet providers in Alton. Versus other fiber providers in the area, Spectrum fiber is the slowest. There are no different maximum speeds throughout Alton. The fastest plan anyone in Alton can order from Spectrum goes up to 1,000 Mbps, and all Alton customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
Spectrum fiber upload speeds
In Alton download speeds tend to be equal to than upload speeds for Spectrum fiber. Compared to other ISPs, Spectrum is below average where upload speeds are concerned, and the slowest compared to other Alton fiber providers. Spectrum offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Alton is up to 1,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 1,000.0 Mbps
Alton Fiber by Area
This information is most helpful to those looking for homes or considering moving to Alton or any of the areas nearby.
How does fiber internet in Alton compare to the rest of Illinois?
Fiber internet speeds in Alton are much faster versus the average speeds in Illinois: 0.00 Mbps in Illinois versus 5,412 Mbps in the city. The state has similar fiber availability compared to the city. Average fiber coverage in Illinois is 0.00% versus 66.36% in Alton.
What zip codes have fiber internet?
Fiber internet coverage varies by zip code and neighborhood. Some examples in or around Alton 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
- Godfrey, IL: less fiber coverage, faster speeds
- Cottage Hills, IL: less fiber coverage, faster speeds
- East Alton, IL: less fiber coverage, faster speeds
- Wood River, IL: more fiber coverage, faster speeds
- Bethalto, IL: less fiber coverage, faster speeds
- Hartford, IL: less fiber coverage, faster speeds
- Roxana, IL: more fiber coverage, faster speeds
- Fosterburg, IL: more fiber coverage, slower speeds
- South Roxana, IL: less fiber coverage, slower speeds
- Moro, IL: less fiber coverage, slower speeds
Cities with Similar Populations
- Golden Gate, FL: more fiber coverage, slower speeds
- Imperial Beach, CA: more fiber coverage, faster speeds
- Franklin, NC: less fiber coverage, slower speeds
- Gibsonia, PA: more fiber coverage, slower speeds
- Grayson, GA: more fiber coverage, slower speeds
- South Laurel, MD: more fiber coverage, slower speeds
- Harvest, AL: more fiber coverage, slower speeds
- Hazelwood, MO: more fiber coverage, slower speeds
- Plum, PA: more fiber coverage, slower speeds
- Brawley, CA: less fiber coverage, slower speeds