In Castle Rock there are 3 residential DSL providers covering 98.14% of the city. The average home can get speeds up to 41 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 DSL internet providers in Castle Rock, MN.
To see availability maps for all providers including fiber, cable, DSL, and more in Castle Rock, MN please click below.
Castle Rock, MN Availability Maps
DSL Internet Service Providers in Castle Rock
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 Castle Rock are not shown.
Castle Rock 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 Castle Rock is DSL internet available?
DSL Internet Availability Key
DSL is available in 98.14% of Castle Rock. Areas in green have DSL internet service, where areas in yellow or red may not. The most widely available provider is Frontier. Call one of the companies with service in Castle Rock above to see who has service at your home.
How fast is DSL internet in Castle Rock?
The map below shows maximum DSL internet speeds by area in Castle Rock.
DSL Internet Speed Key
The average Castle Rock home can get up to 41 Mbps on their DSL internet plan. The fastest DSL download speed in the city is 115 Mbps, which 11.47% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, 48.68% of homes can only purchase plans up to 10 Mbps. See the internet provider details below for info about their speed and coverage in Castle Rock.
DSL internet speeds tend to be faster in the northwest parts of Castle Rock, and slower in the northeast areas of the city.
Is DSL the fastest internet I can get in Castle Rock?
The fastest internet for you may vary based on where in Castle Rock you live. In general, fiber competes most often with DSL in the city.
- Fiber is the fastest internet type for 49.30% of Castle Rock homes.
- Cable is fastest for 1.55% of the city.
- DSL is fastest for less than 1%.
- Fixed wireless is fastest for 48.53%.
- Satellite internet may be the only option for less than 1% of Castle Rock homes.
DSL Providers in Depth
Below you'll find which TV and internet providers offer service in Castle Rock, along with details on where in Castle Rock and at what speeds.
Centurylink DSL in Castle Rock, MN
Centurylink DSL coverage
About 66.98%, or 432 people, have Centurylink DSL internet available to them in the city. The company covers the entire Castle Rock area. Centurylink is one of the largest internet service providers internet service providers in the US, with internet service available in much of Castle Rock.
Centurylink DSL download speeds
Centurylink is below average when comparing download speeds to all other internet providers in Castle Rock. Versus other DSL providers in the area, Centurylink DSL is average. There are 3 different maximum speeds throughout Castle Rock. The fastest plan anyone in Castle Rock can order from Centurylink goes up to 60 Mbps, the slowest package only goes up to 10 Mbps, and the city-wide average maximum speed for Castle Rock customers is up to 32 Mbps.
Show all download speeds
- 34.5% up to 60.0 Mbps
- 16.4% up to 40.0 Mbps
- 49.1% up to 10.0 Mbps
Centurylink DSL upload speeds
In Castle Rock download speeds tend to be faster than than upload speeds for Centurylink DSL. Compared to other ISPs, Centurylink is below average where upload speeds are concerned, and the fastest compared to other Castle Rock DSL providers. Centurylink offers 3 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 Castle Rock is up to 5.0 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, Centurylink customers can get speeds up to 2.7 Mbps.
Show all upload speeds
- 34.5% up to 5.0 Mbps
- 16.4% up to 3.0 Mbps
- 49.1% up to 1.0 Mbps
Frontier Communications DSL in Castle Rock, MN
Frontier DSL coverage
About 59.22%, or 382 people, have Frontier DSL internet available to them in the city. The company covers the northwest, northeast, central, north, and west Castle Rock area. Frontier is one of the largest internet service providers internet service providers in the US, with internet service available in a majority of Castle Rock.
Frontier Communications DSL download speeds
Frontier is below average when comparing download speeds to all other internet providers in Castle Rock. Versus other DSL providers in the area, Frontier DSL is the fastest. There are 4 different maximum speeds throughout Castle Rock. The fastest plan anyone in Castle Rock can order from Frontier goes up to 115 Mbps, the slowest package only goes up to 10 Mbps, and the city-wide average maximum speed for Castle Rock customers is up to 38 Mbps.
Show all download speeds
- 19.4% up to 115.0 Mbps
- 4.2% up to 90.0 Mbps
- 6.5% up to 70.0 Mbps
- 69.9% up to 10.0 Mbps
Frontier Communications DSL upload speeds
In Castle Rock download speeds tend to be faster than than upload speeds for Frontier DSL. Compared to other ISPs, Frontier is below average where upload speeds are concerned, and average compared to other Castle Rock DSL providers. Frontier offers 4 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 Castle Rock is up to 7.0 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, Frontier customers can get speeds up to 2.5 Mbps.
Show all upload speeds
- 19.4% up to 7.0 Mbps
- 4.2% up to 5.0 Mbps
- 6.5% up to 3.0 Mbps
- 69.9% up to 1.0 Mbps
Fidium Fiber DSL in Castle Rock, MN
Fidium DSL coverage
About 8.37%, or 54 people, have Fidium DSL internet available to them in the city. The company covers the east Castle Rock area. Fidium is one of the largest internet service providers internet service providers in the US, with internet service available in a very small piece of Castle Rock.
Fidium Fiber DSL download speeds
Fidium is the slowest when comparing download speeds to all other internet providers in Castle Rock. Versus other DSL providers in the area, Fidium DSL is the slowest. There are no different maximum speeds throughout Castle Rock. The fastest plan anyone in Castle Rock can order from Fidium goes up to 10 Mbps, and all Castle Rock customers can get this speed.
Show all download speeds
- 100.0% up to 10.0 Mbps
Fidium Fiber DSL upload speeds
In Castle Rock download speeds tend to be faster than than upload speeds for Fidium DSL. Compared to other ISPs, Fidium is the slowest where upload speeds are concerned, and the slowest compared to other Castle Rock DSL providers. Fidium offers no different upload speeds across the city. The fastest upload speed available to anyone from this ISP in Castle Rock is up to 1.0 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 1.0 Mbps
Castle Rock DSL by Area
This information is most helpful to those looking for homes or considering moving to Castle Rock or any of the areas nearby.
How does DSL internet in Castle Rock compare to the rest of Minnesota?
DSL internet speeds in Castle Rock are much faster versus the average speeds in Minnesota: 0.00 Mbps in Minnesota versus 41 Mbps in the city. The state has similar DSL availability compared to the city. Average DSL coverage in Minnesota is 0.00% versus 98.14% in Castle Rock.
What zip codes have DSL internet?
DSL internet coverage varies by zip code and neighborhood. Some examples in or around Castle Rock are shown below. You can enter any zip code here to see TV and internet providers by zip code.
What does DSL 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
- Waterford, MN: more DSL coverage, slower speeds
- Northfield, MN: less DSL coverage, slower speeds
- Randolph, MN: less DSL coverage, faster speeds
- Farmington, MN: less DSL coverage, slower speeds
- Stanton, MN: more DSL coverage, faster speeds
- Hampton, MN: less DSL coverage, faster speeds
- Elko New Market, MN: less DSL coverage, slower speeds
- Dundas, MN: more DSL coverage, slower speeds
- Lakeville, MN: less DSL coverage, slower speeds
- Little Chicago, MN: less DSL coverage, slower speeds
Cities with Similar Populations
- Wakonda Beach, OR: less DSL coverage, faster speeds
- Genoa, AR: less DSL coverage, slower speeds
- Vigo, OH: more DSL coverage, slower speeds
- Pickrell, NE: less DSL coverage, faster speeds
- Germfask, MI: less DSL coverage, slower speeds
- Piave, MS: less DSL coverage, slower speeds
- Glen Flora, WI: less DSL coverage, slower speeds
- Vienna, ME: less DSL coverage, slower speeds
- Peters, TX: less DSL coverage, slower speeds
- Peruville, NY: less DSL coverage, faster speeds