In O'Fallon there are 4 residential Fiber providers covering 39.08% of the city. The average home can get speeds up to 4,971 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 O'Fallon, IL.
To see availability maps for all providers including fiber, cable, DSL, and more in O'Fallon, IL please click below.
O'Fallon, IL Availability Maps
Fiber Internet Service Providers in O'Fallon
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 O'Fallon are not shown.
O'Fallon 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 O'Fallon is fiber internet available?
Fiber Internet Availability Key
Fiber is available in 39.08% of O'Fallon. Areas in green have fiber internet service, where areas in yellow or red may not. The most widely available provider is i3 Broadband. Call one of the companies with service in O'Fallon above to see who has service at your home.
How fast is fiber internet in O'Fallon?
The map below shows maximum fiber internet speeds by area in O'Fallon.
Fiber Internet Speed Key
The average O'Fallon home can get up to 4,971 Mbps on their fiber internet plan. The fastest fiber download speed in the city is 8,000 Mbps, which 22.06% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, 16.89% 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 O'Fallon.
Fiber internet speeds tend to be faster in the central parts of O'Fallon, and slower in the north areas of the city.
Is fiber the fastest internet I can get in O'Fallon?
The fastest internet for you may vary based on where in O'Fallon you live. In general, cable competes most often with fiber in the city.
- Fiber is the fastest internet type for 39.08% of O'Fallon homes.
- Cable is fastest for 59.94% 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 O'Fallon homes.
Fiber Providers in Depth
Below you'll find which TV and internet providers offer service in O'Fallon, along with details on where in O'Fallon and at what speeds.
i3 Broadband Fiber in O'Fallon, IL
i3 Broadband fiber coverage
About 22.06%, or 6,863 people, have i3 Broadband fiber internet available to them in the city. The company covers the southwest, west, central, and south O'Fallon area. i3 Broadband is a large internet service provider internet service providers in the US, with internet service available in a small portion of O'Fallon.
i3 Broadband fiber download speeds
i3 Broadband is the fastest when comparing download speeds to all other internet providers in O'Fallon. Versus other fiber providers in the area, i3 Broadband fiber is the fastest. There are no different maximum speeds throughout O'Fallon. The fastest plan anyone in O'Fallon can order from i3 Broadband goes up to 8,000 Mbps, and all O'Fallon customers can get this speed.
Show all download speeds
- 100.0% up to 8,000.0 Mbps
i3 Broadband fiber upload speeds
In O'Fallon download speeds tend to be equal to than upload speeds for i3 Broadband fiber. Compared to other ISPs, i3 Broadband is the fastest where upload speeds are concerned, and the fastest compared to other O'Fallon fiber providers. i3 Broadband offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in O'Fallon is up to 8,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 8,000.0 Mbps
EarthLink Fiber in O'Fallon, IL
EarthLink fiber coverage
About 19.36%, or 6,023 people, have EarthLink fiber internet available to them in the city. The company covers the northwest, north, southwest, west, northeast, south, and east O'Fallon 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 O'Fallon.
EarthLink fiber download speeds
EarthLink is below average when comparing download speeds to all other internet providers in O'Fallon. Versus other fiber providers in the area, EarthLink fiber is one of the slowest. There are no different maximum speeds throughout O'Fallon. The fastest plan anyone in O'Fallon can order from EarthLink goes up to 1,000 Mbps, and all O'Fallon customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
EarthLink fiber upload speeds
In O'Fallon download speeds tend to be equal to than upload speeds for EarthLink fiber. Compared to other ISPs, EarthLink is below average where upload speeds are concerned, and below average compared to other O'Fallon fiber providers. EarthLink offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in O'Fallon is up to 1,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 1,000.0 Mbps
AT&T Fiber in O'Fallon, IL
AT&T fiber coverage
About 19.36%, or 6,023 people, have AT&T fiber internet available to them in the city. The company covers the northwest, north, southwest, west, northeast, south, and east O'Fallon area. AT&T is one of the largest internet service providers internet service providers in the US, with internet service available in a small portion of O'Fallon.
AT&T fiber download speeds
AT&T is below average when comparing download speeds to all other internet providers in O'Fallon. Versus other fiber providers in the area, AT&T fiber is one of the slowest. There are no different maximum speeds throughout O'Fallon. The fastest plan anyone in O'Fallon can order from AT&T goes up to 1,000 Mbps, and all O'Fallon customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
AT&T fiber upload speeds
In O'Fallon download speeds tend to be equal to than upload speeds for AT&T fiber. Compared to other ISPs, AT&T is below average where upload speeds are concerned, and below average compared to other O'Fallon fiber providers. AT&T offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in O'Fallon is up to 1,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 1,000.0 Mbps
Spectrum Fiber in O'Fallon, IL
Spectrum fiber coverage
About 2.52%, or 783 people, have Spectrum fiber internet available to them in the city. The company covers the northwest and southwest O'Fallon 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 O'Fallon.
Spectrum fiber download speeds
Spectrum is below average when comparing download speeds to all other internet providers in O'Fallon. Versus other fiber providers in the area, Spectrum fiber is one of the slowest. There are no different maximum speeds throughout O'Fallon. The fastest plan anyone in O'Fallon can order from Spectrum goes up to 1,000 Mbps, and all O'Fallon customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
Spectrum fiber upload speeds
In O'Fallon download speeds tend to be faster than 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 O'Fallon fiber providers. Spectrum 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 O'Fallon is up to 1,000 Mbps. Some customers have slower plan choices, which only go up to 500 Mbps. On average, Spectrum customers can get speeds up to 967 Mbps.
Show all upload speeds
- 93.4% up to 1,000.0 Mbps
- 6.6% up to 500.0 Mbps
O'Fallon Fiber by Area
This information is most helpful to those looking for homes or considering moving to O'Fallon or any of the areas nearby.
How does fiber internet in O'Fallon compare to the rest of Illinois?
Fiber internet speeds in O'Fallon are much faster versus the average speeds in Illinois: 0.00 Mbps in Illinois versus 4,971 Mbps in the city. The state has similar fiber availability compared to the city. Average fiber coverage in Illinois is 0.00% versus 39.08% in O'Fallon.
What zip codes have fiber internet?
Fiber internet coverage varies by zip code and neighborhood. Some examples in or around O'Fallon 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
- Shiloh, IL: more fiber coverage, faster speeds
- Fairview Heights, IL: more fiber coverage, faster speeds
- Lebanon, IL: less fiber coverage, slower speeds
- Swansea, IL: more fiber coverage, faster speeds
- Caseyville, IL: more fiber coverage, faster speeds
- Lumaghi Heights, IL: more fiber coverage, faster speeds
- Belleville, IL: more fiber coverage, faster speeds
- Collinsville, IL: more fiber coverage, faster speeds
- State Park Place, IL: more fiber coverage, faster speeds
- Troy, IL: less fiber coverage, faster speeds
Cities with Similar Populations
- Fountain, CO: more fiber coverage, slower speeds
- Dawsonville, GA: more fiber coverage, slower speeds
- Denison, TX: more fiber coverage, slower speeds
- Dinuba, CA: less fiber coverage, faster speeds
- Drexel Hill, PA: more fiber coverage, slower speeds
- East Palo Alto, CA: more fiber coverage, faster speeds
- Elgin, SC: more fiber coverage, slower speeds
- Elkhorn, NE: more fiber coverage, slower speeds
- Elmira, NY: more fiber coverage, slower speeds
- Endicott, NY: more fiber coverage, faster speeds