In San Luis Obispo County there are 2 residential DSL providers covering 62.94% of the county. The average home can get speeds up to 11 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 San Luis Obispo County, CA.
To see availability maps for all providers including fiber, cable, DSL, and more in San Luis Obispo County, CA please click below.
San Luis Obispo County, CA Availability Maps
DSL Internet Service Providers in San Luis Obispo 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 San Luis Obispo County are not shown.
San Luis Obispo 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 San Luis Obispo County is DSL internet available?
DSL Internet Availability Key
DSL is available in 62.94% of San Luis Obispo County. Areas in green have DSL 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 San Luis Obispo County above to see who has service at your home.
How fast is DSL internet in San Luis Obispo County?
The map below shows maximum DSL internet speeds by area in San Luis Obispo County.
DSL Internet Speed Key
The average San Luis Obispo County home can get up to 11 Mbps on their DSL internet plan. The fastest DSL download speed in the county is 115 Mbps, which less than 1% of residents can get. Some homes and apartments do not have access to these speeds. On the slower end, for example, 62.35% of homes can only purchase plans up to 10 Mbps. See the internet provider details below for info about their speed and coverage in San Luis Obispo County.
DSL internet speeds tend to be faster in the northeast parts of San Luis Obispo County, and slower in the southeast areas of the county.
Is DSL the fastest internet I can get in San Luis Obispo County?
The fastest internet for you may vary based on where in San Luis Obispo County you live. In general, cable competes most often with DSL in the county.
- Fiber is the fastest internet type for 41.49% of San Luis Obispo County homes.
- Cable is fastest for 45.91% of the county.
- DSL is fastest for less than 1%.
- Fixed wireless is fastest for 8.53%.
- Satellite internet may be the only option for 3.94% of San Luis Obispo County homes.
DSL Providers in Depth
Below you'll find which TV and internet providers offer service in San Luis Obispo County, along with details on where in San Luis Obispo County and at what speeds.
AT&T DSL in San Luis Obispo County, CA
AT&T DSL coverage
About 62.01%, or 175,131 people, have AT&T DSL internet available to them in the county. The company covers the entire San Luis Obispo County area. AT&T is one of the largest internet service providers internet service providers in the US, with internet service available in a majority of San Luis Obispo County.
AT&T DSL download speeds
AT&T is one of the slowest when comparing download speeds to all other internet providers in San Luis Obispo County. Versus other DSL providers in the area, AT&T DSL is one of the slowest. There are 2 different maximum speeds throughout San Luis Obispo County. The fastest plan anyone in San Luis Obispo County can order from AT&T goes up to 25 Mbps, the slowest package only goes up to 10 Mbps, and the county-wide average maximum speed for San Luis Obispo County customers is up to 10 Mbps.
Show all download speeds
- 0.2% up to 25.0 Mbps
- 99.8% up to 10.0 Mbps
AT&T DSL upload speeds
In San Luis Obispo County download speeds tend to be faster than than upload speeds for AT&T DSL. Compared to other ISPs, AT&T is one of the slowest where upload speeds are concerned, and one of the slowest compared to other San Luis Obispo County DSL 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 San Luis Obispo County is up to 5.0 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, AT&T customers can get speeds up to 1.0 Mbps.
Show all upload speeds
- 0.2% up to 5.0 Mbps
- 99.8% up to 1.0 Mbps
EarthLink DSL in San Luis Obispo County, CA
EarthLink DSL coverage
About 62.01%, or 175,131 people, have EarthLink DSL internet available to them in the county. The company covers the entire San Luis Obispo County area. EarthLink is one of the largest internet service providers internet service providers in the US, with internet service available in a majority of San Luis Obispo County.
EarthLink DSL download speeds
EarthLink is one of the slowest when comparing download speeds to all other internet providers in San Luis Obispo County. Versus other DSL providers in the area, EarthLink DSL is one of the slowest. There are 2 different maximum speeds throughout San Luis Obispo County. The fastest plan anyone in San Luis Obispo County can order from EarthLink goes up to 25 Mbps, the slowest package only goes up to 10 Mbps, and the county-wide average maximum speed for San Luis Obispo County customers is up to 10 Mbps.
Show all download speeds
- 0.2% up to 25.0 Mbps
- 99.8% up to 10.0 Mbps
EarthLink DSL upload speeds
In San Luis Obispo County download speeds tend to be faster than than upload speeds for EarthLink DSL. Compared to other ISPs, EarthLink is one of the slowest where upload speeds are concerned, and one of the slowest compared to other San Luis Obispo County DSL 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 San Luis Obispo County is up to 5.0 Mbps. Some customers have slower plan choices, which only go up to 1.0 Mbps. On average, EarthLink customers can get speeds up to 1.0 Mbps.
Show all upload speeds
- 0.2% up to 5.0 Mbps
- 99.8% up to 1.0 Mbps
San Luis Obispo County DSL by Area
This information is most helpful to those looking for homes or considering moving to San Luis Obispo County or any of the areas nearby.
How does DSL internet in San Luis Obispo County compare to the rest of California?
DSL internet speeds in San Luis Obispo County are much faster versus the average speeds in California: 0.00 Mbps in California versus 11 Mbps in the county. The state has similar DSL availability compared to the county. Average DSL coverage in California is 0.00% versus 62.94% in San Luis Obispo County.
What zip codes have DSL internet?
DSL internet coverage varies by zip code and neighborhood. Some examples in or around San Luis Obispo County 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 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
- Kern County, CA: more DSL coverage, faster speeds
- Coconino County, AZ: more DSL coverage, faster speeds
- Sandoval County, NM: more DSL coverage, faster speeds
- Oldham County, TX: more DSL coverage, faster speeds
- Potter County, TX: less DSL coverage, faster speeds
- Carson County, TX: more DSL coverage, faster speeds
- Wheeler County, TX: less DSL coverage, faster speeds
- Beckham County, OK: less DSL coverage, slower speeds
- Washita County, OK: more DSL coverage, faster speeds
- Canadian County, OK: more DSL coverage, faster speeds
Counties with Similar Populations
- Sangamon County, IL: more DSL coverage, faster speeds
- Calcasieu Parish, LA: more DSL coverage, faster speeds
- Canyon County, ID: more DSL coverage, faster speeds
- Champaign County, IL: more DSL coverage, faster speeds
- Chatham County, GA: less DSL coverage, slower speeds
- Cherokee County, GA: more DSL coverage, faster speeds
- Clay County, FL: more DSL coverage, faster speeds
- Clermont County, OH: less DSL coverage, faster speeds
- Elkhart County, IN: less DSL coverage, faster speeds
- Hall County, GA: more DSL coverage, faster speeds