Best Internet Providers in
boulder, Colorado

In 2026, primary wired providers in Boulder include Xfinity (up to 2,000 Mbps) and Quantum Fiber (up to 2,000 Mbps). Plans and availability vary by address.

Top Internet Providers in Boulder

*Advertised maximum download speeds reflect top-tier plan configurations; typical real-world download and upload performance varies by address, equipment, and local network conditions. Xfinity starting pricing reflects introductory rates that may adjust after promotional periods. T-Mobile Home Internet pricing reflects enrollment in eligible AutoPay programs.

EarthLink starting pricing of $39.95/mo applies to lower introductory speed tiers; multi-gigabit options carry higher monthly plan rates. Symmetrical upload and download speeds are delivered over pure fiber infrastructure; cable, DSL, and fixed wireless networks operate with asymmetrical upload speeds.

Nearby Cities & Regional Coverage

Longmont | Lafayette | Louisville | Broomfield | Superior | Erie | Westminster | Golden | Denver

Quick Guide: Finding the Right Boulder Plan

Boulder, Colorado features a dynamic broadband landscape where available speeds and pricing depend directly on the physical lines connected to a given address.

• Xfinity — Cable Internet: Maintains an established hybrid fiber-coaxial network in Boulder. Advertised download speeds reach up to 2,000 Mbps on top-tier packages, with entry-level plans generally starting around $40.00/mo. Cable connections provide high download bandwidth, though upload speeds remain asymmetrical compared to fiber lines. Availability varies by address.
• Quantum Fiber — Fiber Internet: Delivers pure fiber-to-the-home connections with advertised speeds reaching up to 2,000 Mbps. Plans typically start at $50.00/mo. Because optical line deployments occur on a street-by-street basis, availability is limited to select areas and requires specific address verification.
• CenturyLink — DSL and Fiber: Provides copper/DSL service in select locations. Advertised DSL download speeds reach up to 140 Mbps depending on line distance, while select pockets have access to fiber connections reaching up to 940 Mbps.
• EarthLink — Fiber and Wireless: Provides fiber and wireless internet options in select sections of Boulder. While EarthLink advertises speeds up to 5,000 Mbps, plans starting at $39.95/mo apply only to lower introductory speed tiers; multi-gigabit options carry higher monthly plan rates.
• T-Mobile 5G Home — Fixed Wireless: Uses the cellular network to deliver fixed home broadband, advertising download speeds up to 498 Mbps starting at $50.00/mo with AutoPay. These plug-and-play gateways require no exterior line drops or technician drilling, making them an accessible option for renters and residents looking for simple setup without long-term contracts.