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 5,274 recent tests, our research shows that Xfinity customers have been getting 174 Mbps for download speeds and 12 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 February 3, 2023
ProviderDownload SpeedUpload SpeedLatency
View Details →
174 Mbps12 Mbps8 ms
View Details →
60 Mbps16 Mbps7 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 174 Mbps for download speeds and 12 Mbps for upload speeds over 5,274 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 50% of users saw upload speeds between 10-25 Mbps.

Download Speeds

Upload Speeds

Recent Xfinity Speed Tests in Thornton

DateDownload SpeedUpload SpeedLatency
February 2, 2023119 Mbps18 Mbps7 ms
February 2, 20234 Mbps1 Mbps8 ms
February 2, 2023232 Mbps2 Mbps7 ms
February 2, 2023136 Mbps16 Mbpsn/a ms
February 2, 2023250 Mbps11 Mbps11 ms
February 2, 2023369 Mbps6 Mbps15 ms
February 2, 2023331 Mbps6 Mbps13 ms
February 2, 2023352 Mbps3 Mbps12 ms
February 2, 202341 Mbps5 Mbps6 ms
February 2, 202329 Mbps5 Mbps9 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.