RealSpeeds

Internet Speeds in San Marcos, CA

There are 3 internet providers operating in San Marcos, the most popular being Spectrum. Spectrum offers cable internet service. In 18,566 recent tests, on average, we have been seeing 137 Mbps for download speeds and 11 Mbps for upload speeds for Spectrum customers. In addition to Spectrum, cable, fiber, DSL and fixed wireless internet service is also available from Cox Communications and AT&T.

While these are the real speeds we have been seeing in our research, there are many factors that go into the actual download and upload speeds you will encounter.

Last updated on May 12 2022
ProviderDownload SpeedUpload Speed
Spectrum
Cable
View Details →
137 Mbps11 Mbps
Cox Communications
Cable
Fiber
View Details →
132 Mbps12 Mbps
AT&T
DSL
Fiber
Fixed Wireless
View Details →
51 Mbps18 Mbps
* Data from speed tests taken in the last 3 months

Internet Providers in San Marcos, CA

Spectrum

Cable

Download Speed

137Mbps

Upload Speed

11Mbps

Overview

Spectrum is the most popular provider in San Marcos offering cable internet service. Users have been getting 137 Mbps for download speeds and 11 Mbps for upload speeds over 18,566 recent tests.

Speed Breakdown

Spectrum has the fastest average download speeds and the 3rd fastest average upload speeds out of all of the providers in San Marcos. 38% of users saw download speeds between 100-250 Mbps, and 55% of users saw upload speeds between 10-25 Mbps.

Download Speeds

Upload Speeds

Cox Communications

Cable
Fiber

Download Speed

132Mbps

Upload Speed

12Mbps

Overview

Cox Communications is the 2nd most popular provider in San Marcos offering cable and fiber internet service. Users have been getting 132 Mbps for download speeds and 12 Mbps for upload speeds over 17,378 recent tests.

Speed Breakdown

Cox Communications has the 2nd fastest average download speeds and the 2nd fastest average upload speeds out of all of the providers in San Marcos. 25% of users saw download speeds between 100-250 Mbps, and 35% of users saw upload speeds between 10-25 Mbps.

Download Speeds

Upload Speeds

AT&T

DSL
Fiber
Fixed Wireless

Download Speed

51Mbps

Upload Speed

18Mbps

Overview

AT&T is the 3rd most popular provider in San Marcos offering DSL, fiber and fixed wireless internet service. Users have been getting 51 Mbps for download speeds and 18 Mbps for upload speeds over 5,172 recent tests.

Speed Breakdown

AT&T has the 3rd fastest average download speeds and the fastest average upload speeds out of all of the providers in San Marcos. 21% of users saw download speeds between 25-50 Mbps, and 31% of users saw upload speeds slower than 5 Mbps.

Download Speeds

Upload Speeds

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Frequently Asked Questions

What internet providers are available in San Marcos, CA?

Spectrum, Cox Communications and AT&T currently operate in San Marcos.

What is the most popular internet provider in San Marcos, CA?

Spectrum is currently the most popular internet provider in San Marcos based on the number of speed tests in the last 3 months.

What is the fastest internet provider in San Marcos, CA?

The fastest internet provider for you is going to differ based on your needs, and which providers actually serve your home. However, when it comes to the real speeds users in San Marcos are getting, Spectrum provides the fastest download and upload speeds.