In 54421 there is 1 residential Fiber provider covering 33.38% of the zip. The average home can get speeds up to 1,000 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 54421, WI.
To see availability maps for all providers including fiber, cable, DSL, and more in 54421, WI please click below.
Fiber Internet Service Provider in 54421
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 54421 are not shown.
54421 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 54421 is fiber internet available?
Fiber Internet Availability Key
Fiber is available in 33.38% of 54421. Areas in green have fiber internet service, where areas in yellow or red may not. The most widely available provider is Spectrum. Call one of the companies with service in 54421 above to see who has service at your home.
How fast is fiber internet in 54421?
The map below shows maximum fiber internet speeds by area in 54421.
Fiber Internet Speed Key
The average 54421 home can get up to 1,000 Mbps on their fiber internet plan. The fastest fiber download speed in the zip is 1,000 Mbps, which 33.38% of residents can get.
Is fiber the fastest internet I can get in 54421?
The fastest internet for you may vary based on where in 54421 you live. In general, cable competes most often with fiber in the zip.
- Fiber is the fastest internet type for 33.38% of 54421 homes.
- Cable is fastest for 56.06% of the zip.
- DSL is fastest for 1.95%.
- Fixed wireless is fastest for 8.62%.
- Satellite internet may be the only option for less than 1% of 54421 homes.
Fiber Providers in Depth
Below you'll find which TV and internet providers offer service in 54421, along with details on where in 54421 and at what speeds.
Spectrum Fiber in 54421, WI
Spectrum fiber coverage
About 33.38%, or 1,201 people, have Spectrum fiber internet available to them in the zip. The company covers the southwest, southeast, northeast, and east 54421 area. Spectrum is one of the largest internet service providers internet service providers in the US, with internet service available in a small portion of 54421.
Spectrum fiber download speeds
Spectrum is one of the fastest when comparing download speeds to all other internet providers in 54421. Versus other fiber providers in the area, Spectrum fiber is the fastest. There are no different maximum speeds throughout 54421. The fastest plan anyone in 54421 can order from Spectrum goes up to 1,000 Mbps, and all 54421 customers can get this speed.
Show all download speeds
- 100.0% up to 1,000.0 Mbps
Spectrum fiber upload speeds
In 54421 download speeds tend to be faster than than upload speeds for Spectrum fiber. Compared to other ISPs, Spectrum is the fastest where upload speeds are concerned, and the fastest compared to other 54421 fiber providers. Spectrum offers 2 different upload speeds across the zip, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in 54421 is up to 500 Mbps. Some customers have slower plan choices, which only go up to 35 Mbps. On average, Spectrum customers can get speeds up to 433 Mbps.
Show all upload speeds
- 85.5% up to 500.0 Mbps
- 14.5% up to 35.0 Mbps
54421 Fiber by Area
This information is most helpful to those looking for homes or considering moving to 54421 or any of the areas nearby.
How does fiber internet in 54421 compare to the rest of Wisconsin?
Fiber internet speeds in 54421 are much faster versus the average speeds in Wisconsin: 0.00 Mbps in Wisconsin versus 1,000 Mbps in the zip. The state has similar fiber availability compared to the zip. Average fiber coverage in Wisconsin is 0.00% versus 33.38% in 54421.
What zip codes have fiber internet?
Fiber internet coverage varies by zip code and neighborhood. Some examples in or around 54421 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 zip codes?
Below are zip codes nearby and with similar populations. This comparison can be useful if living somewhere with fast internet is important to you.
Nearby Zip Codes
- 54405, WI: less fiber coverage, similar speeds
- 54488, WI: more fiber coverage, similar speeds
- 54425, WI: less fiber coverage, faster speeds
- 54422, WI: less fiber coverage, similar speeds
- 54480, WI: more fiber coverage, similar speeds
- 54460, WI: less fiber coverage, similar speeds
- 54498, WI: less fiber coverage, similar speeds
- 54426, WI: less fiber coverage, similar speeds
- 54411, WI: more fiber coverage, similar speeds
- 54448, WI: more fiber coverage, similar speeds
Zip Codes with Similar Populations
- 38915, MS: more fiber coverage, similar speeds
- 36351, AL: more fiber coverage, faster speeds
- 36879, AL: more fiber coverage, faster speeds
- 37049, TN: more fiber coverage, faster speeds
- 37183, TN: more fiber coverage, faster speeds
- 37362, TN: more fiber coverage, similar speeds
- 37387, TN: more fiber coverage, similar speeds
- 37640, TN: more fiber coverage, faster speeds
- 37755, TN: more fiber coverage, similar speeds
- 37891, TN: more fiber coverage, faster speeds