Best Internet Providers in 80121, CO
All 10 providers, ranked by coverage, speed and customer ratings
Find internet availability by address in 80121, CO
80121 has 10 internet service providers, they are sorted by coverage, available speed, and customer rating from our unbiased internet provider report. Cable, Fiber, Fixed Wireless, and DSL internet are available in the zip. Reviews are grouped by provider and the type of service they offer, covering all 4 available internet technologies in 80121.
Ranks compare 80121 with the 22 Arapahoe County ZIP codes of 1,000 or more people.
The Best Internet in 80121, CO at a Glance
80121 Internet Providers, Ranked by Coverage, Speed and Customer Ratings
XFINITY
Connection
Customer Rating
Cable
CenturyLink
Connection
Customer Rating
Fiber
DSL
ting
Connection
Customer Rating
Fiber
Quantum Fiber
Connection
Customer Rating
Fiber
Providers with less than 1% coverage in this zip 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 80121 ratings may vary and are shown below.
Who is the Best Internet Provider in 80121, CO?
Verizon is the highest-rated internet provider in 80121 based on 147 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.
or call 1-833-213-7018
Which Providers are Available at my Home in 80121?
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 ZIP 80121
- XFINITY - cable coverage map
- Quantum Fiber - fiber coverage map
- ting - fiber coverage map
- CenturyLink - fiber coverage map
- Intrepid Fiber - fiber coverage map
- Verizon - fixed wireless coverage map
- T-Mobile Home Internet - fixed wireless coverage map
- CenturyLink - dsl coverage map
- AT&T - fixed wireless coverage map
- EarthLink - fixed wireless coverage map
- Aerux Broadband - fixed wireless coverage map
How 80121 Compares to the Rest of Arapahoe County
80121's report card score is 6th of 22 and its connectivity index is tied 8th of 22.
| Measure | 80121 | Rank among Arapahoe County ZIP codes of 1,000 or more people | Centennial | Arapahoe County | US | Leader |
|---|---|---|---|---|---|---|
| ISP Report Card inputs: what providers offer here | ||||||
| Fiber availability | 87.8% | 4th of 22 | 85.2% | 56.4% | 71.5% | 80103 (99.6%) |
| Download speed for most homes | 2,000 Mbps | 16th of 22 | 3,876 Mbps | 3,123 Mbps | 3,486 Mbps | 80015 (4,965 Mbps) |
| Providers at a typical address | 6.7 | 11th of 22 | 7.9 | 6.8 | 7.1 | 80015 (8.2) |
| Connectivity index inputs: how much households need and use the internet | ||||||
| People per household | 2.5 | Tied 12th of 22 | 2.7 | 2.7 | 2.7 | 80137 (3.3) |
| Workers who work from home | 28% | Tied 3rd of 22 | 27% | 21% | 15% | 80111 (32%) |
| Homes with a computer, tablet or phone | 97% | Tied 11th of 22 | 99% | 98% | 96% | 80016 (100%) |
| Homes with internet | 94% | Tied 10th of 22 | 97% | 95% | 91% | 80016 and 80137 (99%) |
| Homes on fiber, cable or DSL | 85% | 8th of 22 | 89% | 84% | 76% | 80016 (93%) |
| More about the households here | ||||||
| Homes with a desktop or laptop | 91% | 9th of 22 | 94% | 89% | 81% | 80137 (97%) |
| Median household income | $156,733 | 3rd of 22 | $140,304 | $117,350 | $93,246 | 80111 ($166,346) |
| Residents in school (6th grade to college) | 11% | Tied 18th of 22 | 14% | 15% | 16% | 80103 (22%) |
Fiber reaches 87.8% of homes in 80121, against 85.2% across Centennial and 56.4% across Arapahoe County. Households in 80121 are smaller than the US average (2.5 people against 2.7); 28% of workers work from home (US 15%); and the median household income is $156,733 (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 80121
Which Fiber Internet Providers are Available in 80121?
ting Fiber in 80121, CO
Availability:
69.1%
Customer Rating:
(13)
Avg. Download Speed
1,000 Mbps
ting offers Fiber service to 69.1% of 80121 homes. Across the zip, ting Fiber is the only type of service available from the company, with speeds up to 1,000 Mbps
Quantum Fiber in 80121, CO
Availability:
48.1%
Customer Rating:
(52)
Avg. Download Speed
1,919 Mbps
Quantum Fiber offers Fiber service to 48.1% of 80121 homes. Across the zip, Quantum Fiber is the only type of service available from the company, with speeds up to 1,919 Mbps, with speeds from 940 Mpbs up to 2,000 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 940 and as high as 1,000, with an average of 995 Mbps throughout the zip.
CenturyLink Fiber in 80121, CO
Availability:
39.9%
Customer Rating:
(62)
Avg. Download Speed
897 Mbps
CenturyLink offers Fiber service to 39.9% of 80121 homes. Across the zip, CenturyLink Fiber has speeds up to 897 Mbps, with speeds from 10 Mpbs up to 1,000 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 1.0 and as high as 1,000, with an average of 877 Mbps throughout the zip. CenturyLink Fiber is rated lower than other types of internet service available in 80121 from CenturyLink in terms of customer satisfaction.
Intrepid Fiber in 80121, CO
Availability:
14.1%
Customer Rating:
(0)
Avg. Download Speed
2,000 Mbps
Intrepid Fiber Networks offers Fiber service to 14.1% of 80121 homes. Across the zip, Intrepid Fiber is the only type of service available from the company, with speeds up to 2,000 Mbps
Which Fixed Wireless and LTE Internet Providers are Available in 80121?
T-Mobile Home Internet Fixed Wireless in 80121, CO
Availability:
98.1%
Customer Rating:
(337)
Avg. Download Speed
86 Mbps
T-Mobile Home Internet offers Fixed Wireless service to 98.1% of 80121 homes. Across the zip, T-Mobile Home Internet Fixed Wireless is the only type of service available from the company, with speeds up to 86 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 17 Mbps throughout the zip.
Verizon Fixed Wireless in 80121, CO
Availability:
78.9%
Customer Rating:
(360)
Avg. Download Speed
157 Mbps
Verizon offers Fixed Wireless service to 78.9% of 80121 homes. Across the zip, Verizon Fixed Wireless is the only type of service available from the company, with speeds up to 157 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 13 Mbps throughout the zip.
EarthLink Fixed Wireless in 80121, CO
Availability:
69.0%
Customer Rating:
(4)
Avg. Download Speed
41 Mbps
EarthLink offers Fixed Wireless service to 69.0% of 80121 homes. Across the zip, EarthLink Fixed Wireless is the only type of service available from the company, with speeds up to 41 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 6.6 Mbps throughout the zip.
AT&T Fixed Wireless in 80121, CO
Availability:
69.0%
Customer Rating:
(205)
Avg. Download Speed
41 Mbps
AT&T offers Fixed Wireless service to 69.0% of 80121 homes. Across the zip, AT&T Fixed Wireless is the only type of service available from the company, with speeds up to 41 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 6.6 Mbps throughout the zip.
Aerux Broadband Fixed Wireless in 80121, CO
Availability:
6.9%
Customer Rating:
(0)
Avg. Download Speed
100 Mbps
Aerux Broadband offers Fixed Wireless service to 6.9% of 80121 homes. Across the zip, Aerux Broadband Fixed Wireless is the only type of service available from the company, with speeds up to 100 Mbps
Which Cable Internet Providers are Available in 80121?
XFINITY Cable in 80121, CO
Availability:
99.9%
Customer Rating:
(2071)
Avg. Download Speed
2,000 Mbps
XFINITY from Comcast offers Cable service to 99.9% of 80121 homes. Across the zip, XFINITY Cable is the only type of service available from the company, with speeds up to 2,000 Mbps
Which DSL Internet Providers are Available in 80121?
CenturyLink DSL in 80121, CO
Availability:
81.6%
Customer Rating:
(118)
Avg. Download Speed
82 Mbps
CenturyLink offers DSL service to 81.6% of 80121 homes. Across the zip, CenturyLink DSL has speeds up to 82 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 zip. CenturyLink DSL is rated about the same as other types of internet service available in 80121 from CenturyLink in terms of customer satisfaction.
How 80121 Compares to Its Neighbors
The 10 ZIP codes nearest to 80121 that have their own pages are all within 5 miles. Among them, 80222 (Denver) has the most homes with fiber (88.7%) and 80130 (Highlands Ranch) the fewest (3.7%); 80121 has 87.8%.
| Place | People | Homes with fiber | Speed for most homes | Providers at a typical address | Report card | Connectivity |
|---|---|---|---|---|---|---|
| 80121 (this page) | 18,492 | 87.8% | 2,000 Mbps | 6.7 | B | 80/100 |
| 80126 (Highlands Ranch) | 43,629 | 42.3% | 3,978 Mbps | 5.6 | C+ | 95/100 |
| 80112 (Englewood) | 35,737 | 71.0% | 1,937 Mbps | 7.1 | B- | 80/100 |
| 80111 (Greenwood Village) | 32,326 | 50.2% | 2,027 Mbps | 7.7 | B- | 86/100 |
| 80122 (Centennial) | 32,190 | 85.4% | 3,579 Mbps | 6.8 | B+ | 86/100 |
| 80120 (Littleton) | 29,569 | 85.0% | 2,536 Mbps | 6.9 | B | 73/100 |
| 80130 (Highlands Ranch) | 27,311 | 3.7% | 1,673 Mbps | 5.3 | C- | 93/100 |
| 80110 (Englewood) | 23,405 | 76.0% | 2,670 Mbps | 6.8 | B | 74/100 |
| 80237 (Denver) | 23,108 | 52.9% | 2,866 Mbps | 8.5 | B | 67/100 |
| 80113 (Englewood) | 22,885 | 71.2% | 1,984 Mbps | 7.1 | B- | 67/100 |
| 80222 (Denver) | 22,397 | 88.7% | 2,303 Mbps | 7.7 | B+ | 70/100 |
Who is the Fastest Internet Provider in 80121?
According to unbiased feedback from real internet customers in the zip, they reported being happiest with speeds provided by Verizon. On the other hand, based on data provided by the internet providers to the FCC, XFINITY from Comcast 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 80121
| XFINITY from Comcast | 2,000 |
|---|---|
| Quantum Fiber | 2,000 |
| Intrepid Fiber Networks | 2,000 |
| CenturyLink | 1,000 |
| Verizon | 1,000 |
| ting | 1,000 |
| 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 80121. It takes about 20 seconds and, on a fast line, can move a few hundred MB of data.
Customer Ratings for 80121 Internet Providers
Based on 147 reviews from Colorado internet customers, Verizon is the best internet service provider for 80121 residents. Verizon was rated at an average of 4.20 out of 5 in our report for overall customer satisfaction. ting wins for second-place in Colorado, with 5.00 out of 5 stars and 69.1% coverage in 80121.
At a national level, based on 4816 national reviews for any of the providers listed above, T-Mobile Home Internet is rated higher than any other provider, with a rating of 4.01 out of 5.
Local, State, and National Ratings for all 80121 Internet Providers
The table below shows average customer ratings from customers in 80121, Colorado, and customers throughout the country.
| ISP / Tech Type | 80121 Overall | Colorado Overall | National Overall | For Service | ||
|---|---|---|---|---|---|---|
| Verizon | (0) | (5) | (809) | View Plans | ||
| ting | (0) |  (1) | (13) | View Plans | ||
| T-Mobile Home Internet | (0) | (5) | (337) | View Plans | ||
| HughesNet | (0) |  (1) |  (25) | View Plans | ||
| Quantum Fiber | (0) | (7) | (52) | View Plans | ||
| XFINITY | (0) | (114) | (2369) | View Plans | ||
| AT&T | (0) |  (1) | (1040) | View Plans | ||
| CenturyLink | (0) | (14) | (181) | View Plans | ||
| EarthLink | (0) | (0) | (15) | View Plans | ||
| Viasat | (0) | (0) |  (12) | View Plans | ||
| Aerux Broadband | (0) | (0) | (0) | View Plans | ||
| Intrepid Fiber | (0) | (0) | (0) | View Plans |
Customer Ratings for Internet Provider Speeds in 80121
Based on data reported by 80121 ISPs to the FCC, the fastest speeds in the zip are available through XFINITY from Comcast. The company offers speeds up to 2,000 Mbps in 80121. Therefore, the average customer can get up to 2,000 Mbps if they’re willing to purchase the fastest subscription tier available at their homes.
However, actual customers in the zip rated their satisfaction with internet speed highest with Verizon. This indicates Verizon reliably delivers speeds expected by the customer based on the plan they are paying for.
| ISP / Tech Type | 80121 Speed | Colorado Speed | National Speed | For Service | ||
|---|---|---|---|---|---|---|
| Verizon | (0) |  (5) | (809) | View Plans | ||
| XFINITY | (0) | (114) | (2369) | View Plans | ||
| ting | (0) | (1) | (13) | View Plans | ||
| T-Mobile Home Internet | (0) | (5) | (337) | View Plans | ||
| Quantum Fiber | (0) | (7) | (52) | View Plans | ||
| AT&T | (0) | (1) | (1040) | View Plans | ||
| HughesNet | (0) | (1) | (25) | View Plans | ||
| CenturyLink | (0) | (14) | (181) | View Plans | ||
| EarthLink | (0) | (0) | (15) | View Plans | ||
| Viasat | (0) | (0) | (12) | View Plans | ||
| Aerux Broadband | (0) | (0) | (0) | View Plans | ||
| Intrepid Fiber | (0) | (0) | (0) | View Plans |
Who is the Cheapest Internet Provider in 80121?
Colorado customers rate Quantum Fiber as the cheapest internet service provider in the state. Data comes from customers in the state rating their satisfaction with pricing. This feedback is valuable because it considers price changes and whether the speeds paid for are worth it.
Quantum Fiber received a local rating of 4.00 out of 5, which is higher than the average across all internet providers in the country. ting is rated in second place for affordability by the company’s 80121 customers with an average price rating of 5.00 out of 5.
The table below shows how customers in 80121, Colorado, and the United States rated the affordability of their internet service.
Rated Affordability in 80121
| ISP / Tech Type | 80121 Affordability | Colorado Affordability | National Affordability | For Service | ||
|---|---|---|---|---|---|---|
| Quantum Fiber | (0) | (7) | (52) | View Plans | ||
| ting | (0) | (1) | (13) | View Plans | ||
| T-Mobile Home Internet | (0) | (5) | (337) | View Plans | ||
| AT&T | (0) | (1) | (1040) | View Plans | ||
| HughesNet | (0) | (1) | (25) | View Plans | ||
| Verizon | (0) | (5) | (809) | View Plans | ||
| CenturyLink | (0) | (14) | (181) | View Plans | ||
| XFINITY | (0) | (114) | (2369) | View Plans | ||
| EarthLink | (0) | (0) | (15) | View Plans | ||
| Viasat | (0) | (0) | (12) | View Plans | ||
| Aerux Broadband | (0) | (0) | (0) | View Plans | ||
| Intrepid Fiber | (0) | (0) | (0) | View Plans |
Customer Reviews for Internet Service Providers in Colorado
Customer Reviews
Troy Kelly
Visionary Broadband Fiber
October 29, 2026 567.8 kbps download speed from lan connection on router . This is fiber optic ? 1220 hills cir pagosa springs Co 81147 is our address and we would like the service you sold us . This download speed is terrible.
Carl L
CenturyLink
October 22, 2026 I had CenturyLink for 5 years mainly because they were pretty much the only internet provider where I lived at the time. Monthy price kept creeping up with no improvement in speeds and near monthly interruptions without compensation. I recently switched to fiber internet with 10X the speed and $20 less monthly cost. I returned the rented modem on time as asked. I discontinued CenturyLink in the middle of a billing period. They charged me for a full month instead of prorating my bill for half a month and they said I did not return the modem. Thankfully, I kept the UPS receipt and tracked the return. Sure enough, the modem was received by CenturyLink six days later after shipping. I called their customer service, provided the tracking number and they did remove the $150 unreturned modem charge. They would not prorate the month I discontinued service. My overall experience with CenturyLink was poor from nearly monthly interruptions in service, speeds near 10 Mbps and now charging me for services after I disconnected. I will never use them again. Customer beware; there are a lot better options out there for internet service. My biggest regret is staying with them as long as I did!
ISPReports User
Zentro
September 18, 2026 Awful install experience, weird service, lax security and complicated setup. My building is forcing everyone to use Zentro and the entire building hates them. Previously we were forced to use Xfinity and despite their awful reputation, they have become the hero of this story, and all of the building wishes we still had them. Definitely wouldn't recommend Zentro, not even to an enemy.
Robert W
NextLight Fiber
August 22, 2026 Great basically 100% of the time.
J. E. D.
Loveland Pulse Fiber
July 10, 2026 Internet service is good most of the time. Spotty sometimes. The install was a nightmare and continues with neighbors getting installs while the main box is in our yard. The installers continue to break up our landscaping, edging, and will not replace or repair. Called main office and got no help there at all. Had to call a technician to come out once and he was no help at all.
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Which ISP Should You Choose in 80121?
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 80121 is Verizon.
- The fastest internet provider should be XFINITY from Comcast. Considering speed for the money and reliability in speeds, Verizon may be a better choice based on real-world local customer feedback.
- The most affordable internet provider in 80121 is Quantum Fiber.
- XFINITY from Comcast, Viasat, and HughesNet has the broadest coverage in 80121, available to 99.9% 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.