Best Internet Providers in Thornton, CO
All 10 providers, ranked by coverage, speed and customer ratings
Find internet availability by address in Thornton, CO
Thornton has 10 internet service providers, they are sorted by coverage, available speed, and customer rating from our unbiased internet provider report. Fiber, Cable, DSL, and Fixed Wireless internet are available in the city. Reviews are grouped by provider and the type of service they offer, covering all 4 available internet technologies in Thornton.
Ranks compare Thornton with the 749 US small cities (50,000 to 99,999 people), the tiers of our fastest-cities rankings.
The Best Internet in Thornton, CO at a Glance
Thornton Internet Providers, Ranked by Coverage, Speed and Customer Ratings
XFINITY
Connection
Customer Rating
Cable
CenturyLink
Connection
Customer Rating
Fiber
DSL
Quantum Fiber
Connection
Customer Rating
Fiber
Providers with less than 1% coverage in this city are excluded from the list. To see if one of these providers is available at your home, please use the address search above.
Speed and technology may vary by address for all providers. Please note we may have a financial relationship with some of the providers above, which does not impact the customer ratings displayed. Customer ratings listed above are national ratings, local Thornton ratings may vary and are shown below.
Who is the Best Internet Provider in Thornton, CO?
XFINITY from Comcast is the highest-rated internet provider in Thornton based on 149 Colorado customer reviews, and T-Mobile Home Internet has the highest rating nationwide. The provider information above and the information immediately below can help you decide. Compare provider ratings and review counts above.
Click here to get XFINITY from Comcast
or call 1-877-244-3013
Which Providers are Available at my Home in Thornton?
Coverage changes block by block. Pick a provider and a technology to see where its service reaches: the darker the area, the larger the share of homes it covers. For your exact address, use the address search above.
Coverage map for each provider in Thornton
- XFINITY - cable coverage map
- Quantum Fiber - fiber coverage map
- CenturyLink - fiber coverage map
- Verizon - fixed wireless coverage map
- Rise Broadband - fixed wireless coverage map
- CenturyLink - dsl coverage map
- T-Mobile Home Internet - fixed wireless coverage map
- AT&T - fixed wireless coverage map
- EarthLink - fixed wireless coverage map
- Live Wire Networks - fixed wireless coverage map
- Aerux Broadband - fixed wireless coverage map
How Thornton Compares to Places Its Size
Thornton's report card score is tied 674th of 749 and its connectivity index is tied 140th of 749.
| Measure | Thornton | Rank among US small cities (50,000 to 99,999 people) | Adams County | Colorado | US | Leader |
|---|---|---|---|---|---|---|
| ISP Report Card inputs: what providers offer here | ||||||
| Fiber availability | 27.8% | 694th of 749 | 61.4% | 63.2% | 71.5% | Aloha, OR and Shawnee, KS (100.0%) |
| Average top speed | 2,671 Mbps | Tied 522nd of 749 | 2,814 Mbps | 3,263 Mbps | 3,486 Mbps | Layton, UT (9,808 Mbps) |
| Providers at a typical address | 6.6 | Tied 525th of 749 | 7 | 7.3 | 7.1 | Guaynabo, PR (14.3) |
| Connectivity index inputs: how much households need and use the internet | ||||||
| People per household | 3.0 | Tied 120th of 749 | 2.9 | 2.5 | 2.7 | Pacoima, CA and Spring Valley, NY (4.3) |
| Workers who work from home | 14% | Tied 359th of 749 | 16% | 21% | 15% | Danville, CA and Potomac, MD and 2 more (39%) |
| Homes with a computer, tablet or phone | 99% | Tied 11th of 749 | 97% | 97% | 96% | Atascocita, TX and Eastvale, CA and 8 more (100%) |
| Homes with internet | 96% | Tied 96th of 749 | 93% | 94% | 91% | Centreville, VA and Danville, CA and 2 more (99%) |
| Homes on fiber, cable or DSL | 83% | Tied 243rd of 749 | 80% | 81% | 76% | Flower Mound, TX and Johns Creek, GA and 1 more (93%) |
| More about the households here | ||||||
| Homes with a desktop or laptop | 86% | Tied 305th of 749 | 85% | 88% | 81% | Sammamish, WA (99%) |
| Median household income | $106,465 | 282nd of 749 | $107,220 | $109,874 | $93,246 | Potomac, MD ($227,882) |
| Residents in school (6th grade to college) | 17% | Tied 214th of 749 | 16% | 16% | 16% | East Lansing, MI (58%) |
Fiber reaches 27.8% of homes in Thornton, against 61.4% across Adams County and 63.2% across Colorado. Households in Thornton are larger than the US average (3.0 people against 2.7); 14% of workers work from home (US 15%); and the median household income is $106,465 (US $93,246).
Our demographic data is sourced from the latest 5-year release of the American Community Survey by the US Census Bureau.
Fiber, 5G, Cable and DSL Internet in Thornton
Which Fiber Internet Providers are Available in Thornton?
Quantum Fiber in Thornton, CO
Availability:
27.0%
Customer Rating:
(52)
Avg. Download Speed
4,473 Mbps
Quantum Fiber offers Fiber service to 27.0% of Thornton homes. Across the city, Quantum Fiber is the only type of service available from the company, with speeds up to 4,473 Mbps, with speeds from 940 Mpbs up to 8,000 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 940 and as high as 8,000, with an average of 4,029 Mbps throughout the city.
CenturyLink Fiber in Thornton, CO
Availability:
13.9%
Customer Rating:
(62)
Avg. Download Speed
2,758 Mbps
CenturyLink offers Fiber service to 13.9% of Thornton homes. Across the city, CenturyLink Fiber has speeds up to 2,758 Mbps, with speeds from 40 Mpbs up to 8,000 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 5.0 and as high as 8,000, with an average of 2,693 Mbps throughout the city. CenturyLink Fiber is rated lower than other types of internet service available in Thornton from CenturyLink in terms of customer satisfaction.
Which Fixed Wireless and LTE Internet Providers are Available in Thornton?
Verizon Fixed Wireless in Thornton, CO
Availability:
89.1%
Customer Rating:
(362)
Avg. Download Speed
209 Mbps
Verizon offers Fixed Wireless service to 89.1% of Thornton homes. Across the city, Verizon Fixed Wireless is the only type of service available from the company, with speeds up to 209 Mbps, with speeds from 25 Mpbs up to 1,000 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 6.0 and as high as 75, with an average of 15 Mbps throughout the city.
T-Mobile Home Internet Fixed Wireless in Thornton, CO
Availability:
86.1%
Customer Rating:
(342)
Avg. Download Speed
65 Mbps
T-Mobile Home Internet offers Fixed Wireless service to 86.1% of Thornton homes. Across the city, T-Mobile Home Internet Fixed Wireless is the only type of service available from the company, with speeds up to 65 Mbps, with speeds from 25 Mpbs up to 100 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 3.0 and as high as 20, with an average of 12 Mbps throughout the city.
Rise Broadband Fixed Wireless in Thornton, CO
Availability:
78.6%
Customer Rating:
(15)
Avg. Download Speed
174 Mbps
Rise Broadband offers Fixed Wireless service to 78.6% of Thornton homes. Across the city, Rise Broadband Fixed Wireless is the only type of service available from the company, with speeds up to 174 Mbps, with speeds from 25 Mpbs up to 500 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 5.0 and as high as 100, with an average of 35 Mbps throughout the city.
EarthLink Fixed Wireless in Thornton, CO
Availability:
66.9%
Customer Rating:
(4)
Avg. Download Speed
51 Mbps
EarthLink offers Fixed Wireless service to 66.9% of Thornton homes. Across the city, EarthLink Fixed Wireless is the only type of service available from the company, with speeds up to 51 Mbps, with speeds from 25 Mpbs up to 100 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 3.0 and as high as 20, with an average of 8.8 Mbps throughout the city.
AT&T Fixed Wireless in Thornton, CO
Availability:
66.9%
Customer Rating:
(205)
Avg. Download Speed
51 Mbps
AT&T offers Fixed Wireless service to 66.9% of Thornton homes. Across the city, AT&T Fixed Wireless is the only type of service available from the company, with speeds up to 51 Mbps, with speeds from 25 Mpbs up to 100 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 3.0 and as high as 20, with an average of 8.8 Mbps throughout the city.
Aerux Broadband Fixed Wireless in Thornton, CO
Availability:
28.6%
Customer Rating:
(0)
Avg. Download Speed
100 Mbps
Aerux Broadband offers Fixed Wireless service to 28.6% of Thornton homes. Across the city, Aerux Broadband Fixed Wireless is the only type of service available from the company, with speeds up to 100 Mbps
Live Wire Networks Fixed Wireless in Thornton, CO
Availability:
12.9%
Customer Rating:
(0)
Avg. Download Speed
250 Mbps
Live Wire Networks offers Fixed Wireless service to 12.9% of Thornton homes. Across the city, Live Wire Networks Fixed Wireless is the only type of service available from the company, with speeds up to 250 Mbps
Which Cable Internet Providers are Available in Thornton?
XFINITY Cable in Thornton, CO
Availability:
99.1%
Customer Rating:
(2077)
Avg. Download Speed
1,975 Mbps
XFINITY from Comcast offers Cable service to 99.1% of Thornton homes. Across the city, XFINITY Cable is the only type of service available from the company, with speeds up to 1,975 Mbps, with speeds from 1,200 Mpbs up to 2,000 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 35 and as high as 2,000, with an average of 283 Mbps throughout the city.
Which DSL Internet Providers are Available in Thornton?
CenturyLink DSL in Thornton, CO
Availability:
90.4%
Customer Rating:
(120)
Avg. Download Speed
100 Mbps
CenturyLink offers DSL service to 90.4% of Thornton homes. Across the city, CenturyLink DSL has speeds up to 100 Mbps, with speeds from 10 Mpbs up to 140 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 1.0 and as high as 100, with an average of 14 Mbps throughout the city. CenturyLink DSL is rated about the same as other types of internet service available in Thornton from CenturyLink in terms of customer satisfaction.
Internet in Thornton by Neighborhood and ZIP Code
Fiber reaches from 28.8% of homes in 80260 to 43.3% in 80229. Each row links to that place’s page.
Neighborhoods in Thornton
| Neighborhood | People | Homes with fiber | Average top speed | Providers at a typical address | Report card | Connectivity |
|---|---|---|---|---|---|---|
| Original Thornton | 6,646 | 100.0% | 2,151 Mbps | 7.2 | A- | 85/100 |
ZIP codes in Thornton
How Thornton Compares to Nearby Places
The 10 places nearest to Thornton that have their own pages are all within 7 miles. Among them, Derby has the most homes with fiber (94.7%) and Henderson the fewest (10.5%); Thornton has 27.8%.
| Place | People | Homes with fiber | Average top speed | Providers at a typical address | Report card | Connectivity |
|---|---|---|---|---|---|---|
| Thornton (this page) | 88,784 | 27.8% | 2,671 Mbps | 6.6 | B- | 85/100 |
| Broomfield | 113,416 | 47.4% | 2,293 Mbps | 7 | B- | 86/100 |
| Westminster | 84,050 | 73.0% | 2,732 Mbps | 7.5 | B | 74/100 |
| Northglenn | 65,490 | 84.2% | 3,939 Mbps | 7.6 | B+ | 79/100 |
| Commerce City | 55,856 | 54.1% | 2,117 Mbps | 6.3 | B- | 84/100 |
| Sherrelwood | 19,228 | 71.8% | 2,370 Mbps | 8.5 | B | 64/100 |
| Welby | 15,553 | 68.3% | 3,600 Mbps | 7.2 | B | 67/100 |
| Federal Heights | 14,382 | 27.9% | 2,439 Mbps | 6.3 | C+ | 57/100 |
| Henderson | 13,450 | 10.5% | 1,918 Mbps | 6.4 | C+ | 83/100 |
| Derby | 7,638 | 94.7% | 2,078 Mbps | 8.6 | A- | 68/100 |
| North Washington | 551 | 58.3% | 3,642 Mbps | 9.1 | B | 19/100 |
Who is the Fastest Internet Provider in Thornton?
According to unbiased feedback from real internet customers, they reported being happiest with speeds provided by XFINITY from Comcast. On the other hand, based on data provided by the internet providers to the FCC, Quantum Fiber should have faster speeds at a local level. While we typically put more weight on real-world customer ratings, we display both satisfaction and technical maximum information for customers to decide for themselves.
Data Reported to FCC by ISPs: Average Maximum Available in Thornton
| CenturyLink | 8,000 |
|---|---|
| Quantum Fiber | 8,000 |
| XFINITY from Comcast | 2,000 |
| Verizon | 1,000 |
| Rise Broadband | 500 |
| Live Wire Networks | 250 |
| Viasat | 100 |
| T-Mobile Home Internet | 100 |
| AT&T | 100 |
| EarthLink | 100 |
| Aerux Broadband | 100 |
| HughesNet | 25 |
How fast is your internet?
Test your connection here and see it next to the speeds providers advertise in Thornton. It takes about 20 seconds and, on a fast line, can move a few hundred MB of data.
Customer Ratings for Thornton Internet Providers
Based on 149 reviews from Colorado internet customers, XFINITY from Comcast is the best internet service provider for Thornton residents. XFINITY from Comcast was rated at an average of 3.38 out of 5 in our report for overall customer satisfaction. Quantum Fiber wins for second-place in Colorado, with 5.00 out of 5 stars and 27.0% coverage in Thornton.
At a national level, based on 4856 national reviews for any of the providers listed above, T-Mobile Home Internet is rated higher than any other provider, with a rating of 4.02 out of 5.
Local, State, and National Ratings for all Thornton Internet Providers
The table below shows average customer ratings from customers in Thornton, Colorado, and customers throughout the country.
| ISP / Tech Type | Thornton Overall | Colorado Overall | National Overall | For Service | ||
|---|---|---|---|---|---|---|
| XFINITY | (8) | (114) | (2379) | View Plans | ||
| Quantum Fiber |  (1) | (7) | (52) | View Plans | ||
| AT&T | (0) |  (1) | (1051) | View Plans | ||
| CenturyLink | (0) | (15) | (183) | View Plans | ||
| HughesNet | (0) |  (1) |  (25) | View Plans | ||
| Rise Broadband | (0) | (2) | (18) | View Plans | ||
| T-Mobile Home Internet | (0) | (5) | (342) | View Plans | ||
| Verizon | (0) | (5) | (816) | View Plans | ||
| EarthLink | (0) | (0) | (15) | View Plans | ||
| Viasat | (0) | (0) |  (12) | View Plans | ||
| Aerux Broadband | (0) | (0) | (0) | View Plans | ||
| Live Wire Networks | (0) | (0) | (0) | View Plans |
Customer Ratings for Internet Provider Speeds in Thornton
Based on data reported by Thornton ISPs to the FCC, the fastest speeds in the city are available through Quantum Fiber. The company offers speeds up to 8,000 Mbps in Thornton. Therefore, the average customer can get up to 4,473 Mbps if they’re willing to purchase the fastest subscription tier available at their homes.
However, actual customers rated their satisfaction with internet speed highest with XFINITY from Comcast. This indicates XFINITY reliably delivers speeds expected by the customer based on the plan they are paying for.
| ISP / Tech Type | Thornton Speed | Colorado Speed | National Speed | For Service | ||
|---|---|---|---|---|---|---|
| XFINITY |  (8) | (114) | (2379) | View Plans | ||
| Quantum Fiber | (1) | (7) | (52) | View Plans | ||
| AT&T | (0) | (1) | (1051) | View Plans | ||
| CenturyLink | (0) | (15) | (183) | View Plans | ||
| HughesNet | (0) | (1) | (25) | View Plans | ||
| Rise Broadband | (0) | (2) | (18) | View Plans | ||
| T-Mobile Home Internet | (0) | (5) | (342) | View Plans | ||
| Verizon | (0) | (5) | (816) | View Plans | ||
| EarthLink | (0) | (0) | (15) | View Plans | ||
| Viasat | (0) | (0) | (12) | View Plans | ||
| Aerux Broadband | (0) | (0) | (0) | View Plans | ||
| Live Wire Networks | (0) | (0) | (0) | View Plans |
Who is the Cheapest Internet Provider in Thornton?
Of the providers in Thornton, customers rate AT&T the best for price. Data comes from customers rating their satisfaction with pricing: in Thornton where enough of them have reviewed a provider, otherwise across Colorado or the country. This feedback is valuable because it considers price changes and whether the speeds paid for are worth it.
AT&T is rated 1.00 out of 5 for price, which is much lower than the average across all internet providers in the country. CenturyLink is rated second for affordability, with an average price rating of 3.20 out of 5.
The table below shows how customers in Thornton, Colorado, and the United States rated the affordability of their internet service.
Rated Affordability in Thornton
| ISP / Tech Type | Thornton Affordability | Colorado Affordability | National Affordability | For Service | ||
|---|---|---|---|---|---|---|
| Quantum Fiber | (1) | (7) | (52) | View Plans | ||
| AT&T | (0) | (1) | (1051) | View Plans | ||
| CenturyLink | (0) | (15) | (183) | View Plans | ||
| HughesNet | (0) | (1) | (25) | View Plans | ||
| Rise Broadband | (0) | (2) | (18) | View Plans | ||
| T-Mobile Home Internet | (0) | (5) | (342) | View Plans | ||
| Verizon | (0) | (5) | (816) | View Plans | ||
| XFINITY | (8) | (114) | (2379) | View Plans | ||
| EarthLink | (0) | (0) | (15) | View Plans | ||
| Viasat | (0) | (0) | (12) | View Plans | ||
| Aerux Broadband | (0) | (0) | (0) | View Plans | ||
| Live Wire Networks | (0) | (0) | (0) | View Plans |
Customer Reviews for Internet Service Providers in Colorado
Customer Reviews
John C
XFINITY Cable
December 22, 2025 The price for my internet could be cheaper, it's already high and they are going to be raising it soon. However I have no complaints about the speed. We have several devices all being used at the same time and the speed never drops, it's pretty much instantaneous. I also have to say that it is very reliable, we lose internet very briefly only a few times a year.
A Denver, CO Customer
Quantum Fiber
September 28, 2025 Toni J
XFINITY Cable
November 03, 2024 My internet works smoothly for most of the time. Occasionally it will not work and will be off for several minutes. That caused me to miss a FaceTime job interview recently. I did not get the job.
A Denver, CO Customer
XFINITY Cable
May 10, 2023 A Brighton, CO Customer
XFINITY Cable
December 22, 2024 My internet is relatively good quality but has recently been lagging in speed and efficiency. When I called to inquire about the issue, they sent a technician out the next day to assess the problem. They decided they need to fix the cables underground but need to dig in our yard in order to do so. We are now waiting for xcel to come mark the gas lines.
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Which ISP Should You Choose in Thornton?
The right ISP for you depends upon your needs, but in general we can make the following suggestions:
- The best all-around internet service provider in Thornton is XFINITY.
- The fastest internet provider should be Quantum Fiber. Considering speed for the money and reliability in speeds, XFINITY from Comcast may be a better choice based on real-world local customer feedback.
- The most affordable internet provider in Thornton is AT&T.
- XFINITY from Comcast, Viasat, and HughesNet has the broadest coverage in Thornton, available to 99.4% of homes, and is most likely to cover your home. To find out exactly what’s available at your home, please use our address search tool.