Internet Speeds in Thornton, CO

Residents of Thornton have 2 internet providers to choose from. The most popular provider is Xfinity, which offers cable internet service. Over 10,724 recent tests, our research shows that Xfinity customers have been getting 183 Mbps for download speeds and 17 Mbps for upload speeds. In addition to Xfinity, DSL and fiber internet service is also available from CenturyLink.

While these are the real speeds we have been seeing in recent tests, there are many factors that affect download and upload speeds, so your actual service may differ.

Last updated on June 4, 2023
ProviderDownload SpeedUpload SpeedLatency
View Details →
183 Mbps17 Mbps8 ms
View Details →
94 Mbps56 Mbps4 ms
* Data from speed tests taken in the last 3 months

Internet Providers in Thornton, CO



Download Speed


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Xfinity is the most popular provider in Thornton offering cable internet service. Users have been getting 183 Mbps for download speeds and 17 Mbps for upload speeds over 10,724 recent tests.

Performance Breakdown

Xfinity has the fastest average download speed, the 2nd fastest average upload speed, and the 2nd lowest latency out of all of the providers in Thornton. 28% of users saw download speeds between 100-250 Mbps, and 49% of users saw upload speeds between 10-25 Mbps.

Download Speeds

Upload Speeds

Recent Xfinity Speed Tests in Thornton

DateDownload SpeedUpload SpeedLatency
June 3, 2023134 Mbps22 Mbps34 ms
June 3, 202389 Mbps8 Mbps35 ms
June 3, 202376 Mbps38 Mbps6 ms
June 3, 202387 Mbps16 Mbps17 ms
June 3, 2023911 Mbps41 Mbps45 ms
June 3, 2023826 Mbps111 Mbps14 ms
June 3, 2023592 Mbps96 Mbps21 ms
June 3, 2023119 Mbps18 Mbps33 ms
June 3, 2023226 Mbps132 Mbps48 ms
June 3, 202313 Mbps5 Mbps24 ms

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Frequently Asked Questions

What internet providers are available in Thornton, CO?

Xfinity and CenturyLink currently operate in Thornton.

What is the most popular internet provider in Thornton, CO?

Xfinity is currently the most popular internet provider in Thornton based on the number of speed tests in the last 3 months.

What is the fastest internet provider in Thornton, CO?

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 Thornton are getting, Xfinity provides the fastest download and upload speeds.

Is there fiber internet in Thornton, CO?

CenturyLink provides fiber internet in Thornton.