Best Home Internet in Boulder, CO
Compare home internet providers in Boulder, CO — Xfinity, Quantum Fiber, T-Mobile, and ALLO. Plans, pricing, and which is right for your neighborhood.
Boulder has more home internet options than most Colorado cities — cable, fiber, and wireless home internet all compete here. Here's how the main providers compare.
Provider Comparison
| Provider | Technology | Max Speed | Starting Price | Contract |
|---|---|---|---|---|
| Xfinity / Comcast | Cable | 1,200 Mbps | ~$30/mo | None |
| Quantum Fiber (CenturyLink) | DSL / Fiber | Up to 940 Mbps | ~$50/mo | None |
| T-Mobile Home Internet | 5G/LTE | 33–300 Mbps | $50/mo | None |
| ALLO Communications | Fiber | Up to 2 Gbps | ~$50/mo | None |
Which Provider Is Right for You?
Want the widest availability? Xfinity has the broadest coverage in Boulder. If you're not sure what's available at your address, Xfinity is likely an option.
Want true fiber? Quantum Fiber (formerly CenturyLink) offers fiber at many Boulder addresses — but check first, as DSL is still common in some areas. ALLO is building out fiber through 2026 and worth watching if you're in North Boulder.
Want simple setup, no tech visit? T-Mobile Home Internet plugs in like a router — no installation appointment, no modem to buy. Speeds vary by location but work well for most households.
Still calling it Comcast? Comcast rebranded to Xfinity — same company, same network. See the Comcast / Xfinity Boulder page for the full breakdown.
Check Availability at Your Address
Coverage varies block to block in Boulder, particularly for fiber. All providers have availability checkers on their websites.
- Check Xfinity availability
- Check Quantum Fiber availability
- Check T-Mobile Home Internet availability
- Check ALLO availability
Sources
- FCC Broadband Map — Boulder, CO — Tier 1. Provider coverage and technology type by address. Accessed 2026-05-16.
- Xfinity internet plans — Tier 3. Plan names, speeds, and pricing. Accessed 2026-05-16.
- Quantum Fiber plans — Tier 3. Plan names, speeds, and pricing. Accessed 2026-05-16.
- T-Mobile Home Internet — Tier 3. Plan pricing and availability. Accessed 2026-05-16.
Comcast Internet in Boulder, CO — Plans, Pricing, and Availability
Comcast (now called Xfinity) is the most widely available internet provider in Boulder, CO. Compare plans, pricing, and speeds for Boulder addresses.
ALLO Communications Boulder — Fiber Internet Coming 2026
ALLO Communications is bringing fiber internet to Boulder, CO under a 20-year city lease. Service expected to begin rolling out mid-2026.
CenturyLink / Quantum Fiber in Boulder, CO — Plans and Pricing
CenturyLink (now Quantum Fiber) offers DSL and fiber internet in Boulder, CO. Compare plans, speeds, and pricing for Boulder addresses.
T-Mobile Home Internet in Boulder, CO — Review
T-Mobile Home Internet uses 5G/LTE to deliver home broadband in Boulder, CO. No contract, no data caps, and a simple plug-in router.
Xfinity Internet in Boulder, CO — Plans and Pricing
Xfinity (Comcast) cable internet is widely available in Boulder, Colorado. Compare plans, speeds, and pricing for Boulder addresses.
Xfinity NOW WiFi Pass in Boulder, CO
Xfinity NOW WiFi Pass gives prepaid hotspot access across Boulder and nationally for ~$20/month. No contract, no home install required.