Internet providers in Madison, South Dakota 57042
ZIP code 57042 is in Madison, Lake County, South Dakota. Compare the major providers below, then check availability for your address.
Internet in Madison 57042: local snapshot
About 88% of the 3,249 households in 57042 have a broadband subscription, in line with the South Dakota average of 89%. That ranks 57042#126 of 333 ZIP codes in South Dakota for broadband adoption. A notable share of households rely on satellite internet, a common sign that wired service is patchy in parts of this ZIP.
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2023). These figures describe the area, not the providers available at your address.
Compare internet providers in Madison, South Dakota
Share of residential locations in Madison 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 | Midco | Fiber, Cable, Fixed wireless | 98% | |
| 2 | Clarity Telecom | Fiber, Cable, Fixed wireless | 85% | |
| 3 | CenturyLink / Quantum Fiber | Fiber, DSL | 83% | |
| 4 | T-Mobile Home Internet | Fixed wireless | 78% | |
| 5 | Verizon | Fiber, Fixed wireless | 49% | Check availability |
| 6 | Interlakes Wireless | Fixed wireless | 16% | |
| 7 | LTD Broadband | Fixed wireless | 7% | |
| 8 | AT&T | Fiber, DSL, Fixed wireless | 1% | Check availability |
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 technologies are available in Madison?
Fiber reaches about 27% of locations in Madison, so it is available in parts of the area but not everywhere. Plans of 100 Mbps or faster are reported for about 99%+ of locations, while gigabit-class service reaches about 28%. Fixed wireless home internet is reported for about 72% of locations.
FCC National Broadband Map, data as of December 31, 2025: share of residential locations in Madison that providers report they can serve. City-level figures, not your address.
What to know about internet in Madison 57042
Midco reports service to the most residential locations in Madison, about 98%. 4 providers report coverage of at least half of locations (Midco, Clarity Telecom, CenturyLink / Quantum Fiber, and T-Mobile Home Internet), so the market looks competitive. T-Mobile Home Internet offers fixed wireless home internet, an option if you prefer no cable or fiber installation.
The median age of residents is 41.
Frequently asked questions
Is fiber internet available in Madison?
Yes, in part. About 27% of residential locations in Madison can get fiber, 98% can get cable, and about 28% can get gigabit-class speeds, per FCC data. Availability depends on your exact address.
Which internet provider has the widest coverage in Madison?
Midco reports service to about 98% of residential locations in Madison, the most of any provider, per FCC data. Availability still depends on your address.
How many internet providers serve Madison?
7 providers report service to at least 2% of locations in Madison, 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 Madison 57042?
Most households are well served by 100–300 Mbps. Heavy streaming, gaming or many connected devices may benefit from 500 Mbps or more.
Internet providers near Madison
- Dell Rapids, SD (23 mi)
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