Internet providers in Boulder, Colorado
Boulder is in Boulder County, Colorado, and has 5 ZIP codes. Available providers can differ from one ZIP code to the next, so pick yours below.
Xfinity reports service to the most residential locations in Boulder, about 99%. 6 providers report coverage of at least half of locations (Xfinity, Ayva Limited, CenturyLink / Quantum Fiber, Live Wire Networks, T-Mobile Home Internet, and Verizon), so the market looks competitive. Ayva Limited, Live Wire Networks, and T-Mobile Home Internet offer fixed wireless home internet, an option if you prefer no cable or fiber installation.
Our picks for internet in Boulder
- Widest coverage: Xfinity (about 99% of locations)
- No-install wireless option: Ayva Limited (about 98% of locations)
Picks are based on the share of locations each provider reports serving, not on price or customer reviews.
ZIP codes in Boulder
Compare internet providers in Boulder, Colorado
Share of residential locations in Boulder where each provider reports service, from the FCC National Broadband Map (data as of December 31, 2025). Availability depends on your exact address.
| # | Provider | Technology (varies by address) | Locations covered | |
|---|---|---|---|---|
| 1 | Xfinity | Cable | 99% | |
| 2 | Ayva Limited | Fixed wireless | 98% | |
| 3 | CenturyLink / Quantum Fiber | Fiber, DSL | 96% | |
| 4 | Live Wire Networks | Fixed wireless | 95% | |
| 5 | T-Mobile Home Internet | Fixed wireless | 80% | |
| 6 | Verizon | Fiber, Fixed wireless | 60% | Check availability |
| 7 | AT&T | Fiber, DSL, Fixed wireless | 40% | Check availability |
| 8 | JAB Wireless | Fixed wireless | 8% |
Satellite internet
| 1 | HughesNet | Satellite | 99%+ | |
| 2 | Viasat | Satellite | 99%+ | |
| 3 | Starlink | Satellite | 99%+ |
Satellite service is available at nearly every address but typically has higher latency than wired options.
Provider-reported coverage does not guarantee service or speeds at a specific address. Some "Check availability" links are affiliate links; we may earn a commission at no cost to you. How we make money.
What technologies are available in Boulder?
Fiber reaches about 38% of locations in Boulder, so it is available in parts of the area but not everywhere. Gigabit-class service (1,000 Mbps down) is reported for about 99%+ of locations. DSL is still reported for about 36% of locations, which can be a fallback where fiber and cable do not reach. Fixed wireless home internet is reported for about 99%+ of locations.
FCC National Broadband Map, data as of December 31, 2025: share of residential locations in Boulder that providers report they can serve. City-level figures, not your address.
Best-connected ZIP codes in Boulder
Frequently asked questions
Is fiber internet available in Boulder?
Yes, in part. About 38% of residential locations in Boulder can get fiber, 97% can get cable, and about 100% can get gigabit-class speeds, per FCC data. Availability depends on your exact address.
Which internet provider has the widest coverage in Boulder?
Xfinity reports service to about 99% of residential locations in Boulder, the most of any provider, per FCC data. Availability still depends on your address.
How many internet providers serve Boulder?
8 providers report service to at least 2% of locations in Boulder, and 6 cover at least half. Satellite (HughesNet, Viasat, Starlink) is also available nearly everywhere.
What is the difference between fiber, cable and DSL?
Fiber offers the fastest and most consistent speeds, cable is widely available with high download speeds, and DSL runs over phone lines and is usually slower. See our guide for details.
What internet speed do I need in Boulder?
Most households are well served by 100–300 Mbps. Heavy streaming, gaming or many connected devices may benefit from 500 Mbps or more.