In Sangamon County there are 9 residential Fiber providers covering 63.67% of the county. The average home can get speeds up to 3,136 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 Sangamon County, IL.
To see availability maps for all providers including fiber, cable, DSL, and more in Sangamon County, IL please click below.
Sangamon County, IL Availability Maps
Fiber Internet Service Providers in Sangamon 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 Sangamon County are not shown.
Sangamon 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 Sangamon County is fiber internet available?
Fiber Internet Availability Key
Fiber is available in 63.67% of Sangamon County. 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 Sangamon County above to see who has service at your home.
How fast is fiber internet in Sangamon County?
The map below shows maximum fiber internet speeds by area in Sangamon County.
Fiber Internet Speed Key
The average Sangamon County home can get up to 3,136 Mbps on their fiber internet plan. The fastest fiber download speed in the county is 7,000 Mbps, which 2.84% 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 Sangamon County.
Fiber internet speeds tend to be faster in the central parts of Sangamon County, and slower in the south areas of the county.
Is fiber the fastest internet I can get in Sangamon County?
The fastest internet for you may vary based on where in Sangamon County you live. In general, cable competes most often with fiber in the county.
- Fiber is the fastest internet type for 38.56% of Sangamon County homes.
- Cable is fastest for 56.09% of the county.
- DSL is fastest for less than 1%.
- Fixed wireless is fastest for 4.64%.
- Satellite internet may be the only option for less than 1% of Sangamon County homes.
Fiber Providers in Depth
Below you'll find which TV and internet providers offer service in Sangamon County, along with details on where in Sangamon County and at what speeds.
EarthLink Fiber in Sangamon County, IL
EarthLink fiber coverage
About 31.49%, or 61,824 people, have EarthLink fiber internet available to them in the county. The company covers the central, west, north, northeast, northwest, east, and southwest Sangamon 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 Sangamon County.
EarthLink fiber download speeds
EarthLink is above average when comparing download speeds to all other internet providers in Sangamon County. Versus other fiber providers in the area, EarthLink fiber is above average. There are 2 different maximum speeds throughout Sangamon County. The fastest plan anyone in Sangamon County can order from EarthLink goes up to 5,000 Mbps, the slowest package only goes up to 1,000 Mbps, and the county-wide average maximum speed for Sangamon County customers is up to 4,508 Mbps.
Show all download speeds
- 87.7% up to 5,000.0 Mbps
- 12.3% up to 1,000.0 Mbps
EarthLink fiber upload speeds
In Sangamon County 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 Sangamon 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 Sangamon County 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 4,508 Mbps.
Show all upload speeds
- 87.7% up to 5,000.0 Mbps
- 12.3% up to 1,000.0 Mbps
AT&T Fiber in Sangamon County, IL
AT&T fiber coverage
About 31.49%, or 61,824 people, have AT&T fiber internet available to them in the county. The company covers the central, west, north, northeast, northwest, east, and southwest Sangamon County 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 Sangamon County.
AT&T fiber download speeds
AT&T is above average when comparing download speeds to all other internet providers in Sangamon County. Versus other fiber providers in the area, AT&T fiber is above average. There are 2 different maximum speeds throughout Sangamon County. The fastest plan anyone in Sangamon County can order from AT&T goes up to 5,000 Mbps, the slowest package only goes up to 1,000 Mbps, and the county-wide average maximum speed for Sangamon County customers is up to 4,508 Mbps.
Show all download speeds
- 87.7% up to 5,000.0 Mbps
- 12.3% up to 1,000.0 Mbps
AT&T fiber upload speeds
In Sangamon County 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 Sangamon County fiber providers. AT&T 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 Sangamon County 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 4,508 Mbps.
Show all upload speeds
- 87.7% up to 5,000.0 Mbps
- 12.3% up to 1,000.0 Mbps
i3 Broadband Fiber in Sangamon County, IL
i3 Broadband fiber coverage
About 24.70%, or 48,498 people, have i3 Broadband fiber internet available to them in the county. The company covers the west, southwest, northwest, south, and central Sangamon County area. i3 Broadband is a large internet service provider internet service providers in the US, with internet service available in a small portion of Sangamon County.
i3 Broadband fiber download speeds
i3 Broadband is below average when comparing download speeds to all other internet providers in Sangamon County. Versus other fiber providers in the area, i3 Broadband fiber is below average. There are no different maximum speeds throughout Sangamon County. The fastest plan anyone in Sangamon County can order from i3 Broadband goes up to 1,000 Mbps, and all Sangamon County customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
i3 Broadband fiber upload speeds
In Sangamon County download speeds tend to be equal to than upload speeds for i3 Broadband fiber. Compared to other ISPs, i3 Broadband is below average where upload speeds are concerned, and below average compared to other Sangamon County fiber providers. i3 Broadband offers no different upload speeds across the county. The fastest upload speed available to anyone from this ISP in Sangamon County is up to 1,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 1,000.0 Mbps
CASSCOMM Fiber in Sangamon County, IL
CASSCOMM fiber coverage
About 6.23%, or 12,225 people, have CASSCOMM fiber internet available to them in the county. The company covers the northeast, northwest, north, and west Sangamon County area. CASSCOMM is a large internet service provider internet service providers in the US, with internet service available in a very small piece of Sangamon County.
CASSCOMM fiber download speeds
CASSCOMM is below average when comparing download speeds to all other internet providers in Sangamon County. Versus other fiber providers in the area, CASSCOMM fiber is below average. There are 2 different maximum speeds throughout Sangamon County. The fastest plan anyone in Sangamon County can order from CASSCOMM goes up to 1,000 Mbps, the slowest package only goes up to 100 Mbps, and the county-wide average maximum speed for Sangamon County customers is up to 992 Mbps.
Show all download speeds
- 99.1% up to 1,000.0 Mbps
- 0.9% up to 100.0 Mbps
CASSCOMM fiber upload speeds
In Sangamon County download speeds tend to be faster than than upload speeds for CASSCOMM fiber. Compared to other ISPs, CASSCOMM is below average where upload speeds are concerned, and below average compared to other Sangamon County fiber providers. CASSCOMM 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 Sangamon County is up to 1,000 Mbps. Some customers have slower plan choices, which only go up to 25 Mbps. On average, CASSCOMM customers can get speeds up to 992 Mbps.
Show all upload speeds
- 99.1% up to 1,000.0 Mbps
- 0.9% up to 25.0 Mbps
CTI Fiber Fiber in Sangamon County, IL
CTI Fiber fiber coverage
About 5.30%, or 10,406 people, have CTI Fiber fiber internet available to them in the county. The company covers the southeast, southwest, east, and south Sangamon County area. CTI Fiber is a large internet service provider internet service providers in the US, with internet service available in a very small piece of Sangamon County.
CTI Fiber fiber download speeds
CTI Fiber is above average when comparing download speeds to all other internet providers in Sangamon County. Versus other fiber providers in the area, CTI Fiber fiber is below average. There are 2 different maximum speeds throughout Sangamon County. The fastest plan anyone in Sangamon County can order from CTI Fiber goes up to 2,000 Mbps, the slowest package only goes up to 1,000 Mbps, and the county-wide average maximum speed for Sangamon County customers is up to 1,614 Mbps.
Show all download speeds
- 61.4% up to 2,000.0 Mbps
- 38.6% up to 1,000.0 Mbps
CTI Fiber fiber upload speeds
In Sangamon County download speeds tend to be equal to than upload speeds for CTI Fiber fiber. Compared to other ISPs, CTI Fiber is above average where upload speeds are concerned, and below average compared to other Sangamon County fiber providers. CTI Fiber 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 Sangamon County is up to 2,000 Mbps. Some customers have slower plan choices, which only go up to 1,000 Mbps. On average, CTI Fiber customers can get speeds up to 1,614 Mbps.
Show all upload speeds
- 61.4% up to 2,000.0 Mbps
- 38.6% up to 1,000.0 Mbps
Conxxus Fiber in Sangamon County, IL
Conxxus fiber coverage
About 4.41%, or 8,652 people, have Conxxus fiber internet available to them in the county. The company covers the southwest, southeast, and northeast Sangamon County area. Conxxus is a large internet service provider internet service providers in the US, with internet service available in a very small piece of Sangamon County.
Conxxus fiber download speeds
Conxxus is above average when comparing download speeds to all other internet providers in Sangamon County. Versus other fiber providers in the area, Conxxus fiber is above average. There are no different maximum speeds throughout Sangamon County. The fastest plan anyone in Sangamon County can order from Conxxus goes up to 5,000 Mbps, and all Sangamon County customers can get this speed.
Show all download speeds
- 100.0% up to 5,000.0 Mbps
Conxxus fiber upload speeds
In Sangamon County download speeds tend to be equal to than upload speeds for Conxxus fiber. Compared to other ISPs, Conxxus is above average where upload speeds are concerned, and above average compared to other Sangamon County fiber providers. Conxxus offers no different upload speeds across the county. The fastest upload speed available to anyone from this ISP in Sangamon County is up to 5,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 5,000.0 Mbps
Royell Communications Fiber in Sangamon County, IL
Royell Communications fiber coverage
About 2.83%, or 5,564 people, have Royell Communications fiber internet available to them in the county. The company covers the southwest Sangamon County area. Royell Communications is a large internet service provider internet service providers in the US, with internet service available in a very small piece of Sangamon County.
Royell Communications fiber download speeds
Royell Communications is the fastest when comparing download speeds to all other internet providers in Sangamon County. Versus other fiber providers in the area, Royell Communications fiber is the fastest. There are no different maximum speeds throughout Sangamon County. The fastest plan anyone in Sangamon County can order from Royell Communications goes up to 7,000 Mbps, and all Sangamon County customers can get this speed.
Show all download speeds
- 100.0% up to 7,000.0 Mbps
Royell Communications fiber upload speeds
In Sangamon County download speeds tend to be equal to than upload speeds for Royell Communications fiber. Compared to other ISPs, Royell Communications is the fastest where upload speeds are concerned, and the fastest compared to other Sangamon County fiber providers. Royell Communications offers no different upload speeds across the county. The fastest upload speed available to anyone from this ISP in Sangamon County is up to 7,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 7,000.0 Mbps
Frontier Communications Fiber in Sangamon County, IL
Frontier fiber coverage
About 2.47%, or 4,850 people, have Frontier fiber internet available to them in the county. The company covers the southwest and northwest Sangamon County area. Frontier is one of the largest internet service providers internet service providers in the US, with internet service available in a very small piece of Sangamon County.
Frontier Communications fiber download speeds
Frontier is above average when comparing download speeds to all other internet providers in Sangamon County. Versus other fiber providers in the area, Frontier fiber is above average. There are 2 different maximum speeds throughout Sangamon County. The fastest plan anyone in Sangamon County can order from Frontier goes up to 7,000 Mbps, the slowest package only goes up to 150 Mbps, and the county-wide average maximum speed for Sangamon County customers is up to 6,729 Mbps.
Show all download speeds
- 96.0% up to 7,000.0 Mbps
- 4.0% up to 150.0 Mbps
Frontier Communications fiber upload speeds
In Sangamon County download speeds tend to be equal to than upload speeds for Frontier fiber. Compared to other ISPs, Frontier is above average where upload speeds are concerned, and above average compared to other Sangamon County fiber providers. Frontier 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 Sangamon County is up to 7,000 Mbps. Some customers have slower plan choices, which only go up to 150 Mbps. On average, Frontier customers can get speeds up to 6,729 Mbps.
Show all upload speeds
- 96.0% up to 7,000.0 Mbps
- 4.0% up to 150.0 Mbps
XFINITY from Comcast Fiber in Sangamon County, IL
XFINITY fiber coverage
About 2.09%, or 4,095 people, have XFINITY fiber internet available to them in the county. The company covers the northeast and north Sangamon County area. XFINITY is one of the largest internet service providers internet service providers in the US, with internet service available in a very small piece of Sangamon County.
XFINITY from Comcast fiber download speeds
XFINITY is below average when comparing download speeds to all other internet providers in Sangamon County. Versus other fiber providers in the area, XFINITY fiber is below average. There are 2 different maximum speeds throughout Sangamon County. The fastest plan anyone in Sangamon County can order from XFINITY goes up to 1,200 Mbps, the slowest package only goes up to 1,000 Mbps, and the county-wide average maximum speed for Sangamon County customers is up to 1,181 Mbps.
Show all download speeds
- 90.5% up to 1,200.0 Mbps
- 9.5% up to 1,000.0 Mbps
XFINITY from Comcast fiber upload speeds
In Sangamon County download speeds tend to be faster than than upload speeds for XFINITY fiber. Compared to other ISPs, XFINITY is below average where upload speeds are concerned, and below average compared to other Sangamon County fiber providers. XFINITY 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 Sangamon 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 188 Mbps.
Show all upload speeds
- 15.8% up to 1,000.0 Mbps
- 84.2% up to 35.0 Mbps
Sangamon County Fiber by Area
This information is most helpful to those looking for homes or considering moving to Sangamon County or any of the areas nearby.
How does fiber internet in Sangamon County compare to the rest of Illinois?
Fiber internet speeds in Sangamon County are much faster versus the average speeds in Illinois: 0.00 Mbps in Illinois versus 3,136 Mbps in the county. The state has similar fiber availability compared to the county. Average fiber coverage in Illinois is 0.00% versus 63.67% in Sangamon County.
What zip codes have fiber internet?
Fiber internet coverage varies by zip code and neighborhood. Some examples in or around Sangamon 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
- Morgan County, IL: more fiber coverage, faster speeds
- Macon County, IL: less fiber coverage, faster speeds
- Scott County, IL: less fiber coverage, slower speeds
- Moultrie County, IL: more fiber coverage, faster speeds
- Pike County, IL: less fiber coverage, slower speeds
- Douglas County, IL: more fiber coverage, faster speeds
- Marion County, MO: more fiber coverage, slower speeds
- Edgar County, IL: more fiber coverage, faster speeds
- Vermillion County, IN: less fiber coverage, slower speeds
- Shelby County, MO: more fiber coverage, slower speeds
Counties with Similar Populations
- Richmond County, GA: less fiber coverage, faster speeds
- Benton County, AR: less fiber coverage, faster speeds
- Benton County, WA: less fiber coverage, faster speeds
- Berkeley County, SC: more fiber coverage, faster speeds
- Yavapai County, AZ: less fiber coverage, slower speeds
- Broome County, NY: less fiber coverage, faster speeds
- Brown County, WI: less fiber coverage, faster speeds
- Buncombe County, NC: less fiber coverage, faster speeds
- Butte County, CA: less fiber coverage, faster speeds
- Cabarrus County, NC: more fiber coverage, faster speeds