Internet providers in Alton, IL
Alton is a city in Illinois with about 25,430 residents and roughly 14,272 residential locations that internet providers can report on. The table below compares the providers that report service here.
Compare internet providers in Alton, IL
Share of residential locations in Alton where each provider reports service, from the FCC National Broadband Map (data as of December 31, 2025). Availability depends on your exact address.
| # | Provider | Technology (varies by address) | Locations covered | |
|---|---|---|---|---|
| 1 | Spectrum | Fiber, Cable | 95% | |
| 2 | AT&T | Fiber, DSL, Fixed wireless | 84% | Check availability |
| 3 | T-Mobile Home Internet | Fixed wireless | 82% | |
| 4 | Verizon | Fiber, Fixed wireless | 64% | Check availability |
| 5 | Wisper ISP | Fixed wireless | 17% | |
| 6 | WH i3B Bidco LLC/WH i3B Topco | Fiber, Cable | 5% | |
| 7 | Delta Communications | Fiber | <1% |
Satellite internet
| 1 | HughesNet | Satellite | 99%+ | |
| 2 | Viasat | Satellite | 99%+ | |
| 3 | Starlink | Satellite | 99%+ |
Satellite service is available at nearly every address but typically has higher latency than wired options.
Provider-reported coverage does not guarantee service or speeds at a specific address. Some "Check availability" links are affiliate links; we may earn a commission at no cost to you. How we make money.
What to know about internet in Alton
Spectrum reports service to the most residential locations in Alton, about 95%. 4 providers report coverage of at least half of locations (Spectrum, AT&T, T-Mobile Home Internet, and Verizon), so the market looks competitive. T-Mobile Home Internet offers fixed wireless home internet, an option if you prefer no cable or fiber installation.
What technologies are available in Alton?
Fiber reaches about 40% of locations in Alton, so it is available in parts of the area but not everywhere. Gigabit-class service (1,000 Mbps down) is reported for about 96% of locations. DSL is still reported for about 28% of locations, which can be a fallback where fiber and cable do not reach. Fixed wireless home internet is reported for about 82% of locations.
FCC National Broadband Map, data as of December 31, 2025: share of residential locations in Alton that providers report they can serve. City-level figures, not your address.
Alton at a glance
About 88% of households in Alton have a broadband subscription, 1 points below the Illinois average of 89%.
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2023).
Internet providers in places near Alton
- Wood River, IL (5 mi)
- Godfrey, IL (5 mi)
- Spanish Lake, MO (9 mi)
- Old Jamestown, MO (9 mi)
- Edwardsville, IL (12 mi)
- Florissant, MO (12 mi)
- Granite City, IL (12 mi)
- Ferguson, MO (13 mi)
- Glen Carbon, IL (14 mi)
- Jennings, MO (14 mi)
- Hazelwood, MO (15 mi)
- Bridgeton, MO (17 mi)
- Collinsville, IL (18 mi)
- St. Ann, MO (18 mi)
- Troy, IL (18 mi)
- Overland, MO (19 mi)
- University City, MO (19 mi)
- St. Louis, MO (19 mi)
- East St. Louis, IL (20 mi)
- Clayton, MO (20 mi)
Frequently asked questions
Is fiber internet available in Alton?
Yes, in part. About 40% of residential locations in Alton can get fiber, 95% can get cable, and about 96% can get gigabit-class speeds, per FCC data. Availability depends on your exact address.
Which internet provider has the widest coverage in Alton?
Spectrum reports service to about 95% of residential locations in Alton, the most of any provider, per FCC data. Availability still depends on your address.
How many internet providers serve Alton?
6 providers report service to at least 2% of locations in Alton, and 4 cover at least half. Satellite (HughesNet, Viasat, Starlink) is also available nearly everywhere.
What is the difference between fiber, cable and DSL?
Fiber offers the fastest and most consistent speeds, cable is widely available with high download speeds, and DSL runs over phone lines and is usually slower. See our guide for details.
What internet speed do I need in Alton?
Most households are well served by 100–300 Mbps. Heavy streaming, gaming or many connected devices may benefit from 500 Mbps or more.
Check your exact address
Coverage for a whole community cannot tell you what is available at your door. Enter your ZIP code, then confirm with each provider.
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