RealSpeeds

Internet Speeds in San Marcos, CA

There are 3 internet providers operating in San Marcos, the most popular being Cox Communications. Cox Communications offers cable and fiber internet service. In 13,847 recent tests, on average, we have been seeing 130 Mbps for download speeds and 11 Mbps for upload speeds for Cox Communications customers. In addition to Cox Communications, cable, DSL, fiber and fixed wireless internet service is also available from Spectrum 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 September 22, 2022
ProviderDownload SpeedUpload SpeedLatency
Cox Communications
Cable
Fiber
View Details →
130 Mbps11 Mbps11 ms
Spectrum
Cable
View Details →
150 Mbps11 Mbps12 ms
AT&T
DSL
Fiber
Fixed Wireless
View Details →
50 Mbps12 Mbps20 ms
* Data from speed tests taken in the last 3 months

Internet Providers in San Marcos, CA

Cox Communications

Cable
Fiber

Download Speed

130Mbps

Upload Speed

11Mbps

Latency

11ms

Overview

Cox Communications is the most popular provider in San Marcos offering cable and fiber internet service. Users have been getting 130 Mbps for download speeds and 11 Mbps for upload speeds over 13,847 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. 26% of users saw download speeds between 100-250 Mbps, and 34% of users saw upload speeds between 10-25 Mbps.

Download Speeds

Upload Speeds

Recent Speed Tests

DateDownload SpeedUpload SpeedLatency
September 20, 2022926 Mbps35 Mbpsn/a ms
September 20, 202233 Mbps5 Mbps12 ms
September 20, 202223 Mbps11 Mbps12 ms
September 20, 202239 Mbps9 Mbps13 ms
September 20, 2022463 Mbps37 Mbps8 ms
September 20, 2022429 Mbps36 Mbpsn/a ms
September 20, 202232 Mbps1 Mbps28 ms
September 20, 2022147 Mbps4 Mbps15 ms
September 20, 2022175 Mbps4 Mbps9 ms
September 20, 2022413 Mbps11 Mbps8 ms

Spectrum

Cable

Download Speed

150Mbps

Upload Speed

11Mbps

Latency

12ms

Overview

Spectrum is the 2nd most popular provider in San Marcos offering cable internet service. Users have been getting 150 Mbps for download speeds and 11 Mbps for upload speeds over 8,007 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. 30% of users saw download speeds between 250-500 Mbps, and 62% of users saw upload speeds between 10-25 Mbps.

Download Speeds

Upload Speeds

Recent Speed Tests

DateDownload SpeedUpload SpeedLatency
September 20, 2022294 Mbps23 Mbps14 ms
September 20, 2022228 Mbps10 Mbps57 ms
September 20, 202254 Mbps15 Mbps12 ms
September 20, 2022197 Mbps11 Mbps10 ms
September 20, 202270 Mbps6 Mbpsn/a ms
September 20, 2022297 Mbps20 Mbpsn/a ms
September 20, 202227 Mbps13 Mbps12 ms
September 20, 202280 Mbps10 Mbps11 ms
September 20, 2022200 Mbps11 Mbps11 ms
September 20, 2022380 Mbps20 Mbps16 ms

AT&T

DSL
Fiber
Fixed Wireless

Download Speed

50Mbps

Upload Speed

12Mbps

Latency

20ms

Overview

AT&T is the 3rd most popular provider in San Marcos offering DSL, fiber and fixed wireless internet service. Users have been getting 50 Mbps for download speeds and 12 Mbps for upload speeds over 3,809 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. 20% of users saw download speeds between 25-50 Mbps, and 27% of users saw upload speeds slower than 5 Mbps.

Download Speeds

Upload Speeds

Recent Speed Tests

DateDownload SpeedUpload SpeedLatency
September 20, 202266 Mbps38 Mbps7 ms
September 20, 202293 Mbps88 Mbps5 ms
September 20, 20221 Mbps1 Mbps22 ms
September 20, 202261 Mbps92 Mbps8 ms
September 20, 20226 Mbps5 Mbps10 ms
September 20, 2022924 Mbps893 Mbps6 ms
September 20, 202245 Mbps11 Mbps20 ms
September 20, 20226 Mbps1 Mbps28 ms
September 20, 2022473 Mbps220 Mbps9 ms
September 20, 2022285 Mbps213 Mbps10 ms

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Frequently Asked Questions

What internet providers are available in San Marcos, CA?

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

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

Cox Communications 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.

Is there fiber internet in San Marcos, CA?

AT&T and Cox Communications provide fiber internet in San Marcos.