Boulder, CO
Internet plans in Boulder from $35/mo.
3 providers serve addresses around 80302. Prices below are illustrative estimates — including the price after each promo ends — and the provider confirms final terms at your address.
- 3
- Providers listed
- $72
- Avg. bill in state
- 80302
- Sample ZIP
- September 2026
- Data reviewed
Check your Boulder address
Availability changes street by street. Confirm in seconds.
Providers serving Boulder
Open a provider for full plan detail, pros and cons.
Xfinity
4.2Cable · Fiber
The widest range of speed tiers in the industry, from budget starter plans to multi-gig, with frequent price-lock promotions.
From $35/mo · up to 2 Gbps
Quantum Fiber
4.3Fiber
CenturyLink's fiber brand: symmetrical multi-gig speeds, no contracts, and transparent monthly pricing.
From $50/mo · up to 8 Gbps
T-Mobile Home Internet
4.45G Home
One flat price with taxes, fees, and equipment included, no annual contract, and a five-year price guarantee on most plans.
From $35/mo · up to 415 Mbps
Prices are illustrative entry-level estimates — providers control pricing, terms, and availability.
Moving to Boulder?
Book activation for the morning you get keys — install calendars fill fastest at month-end.
Renting here?
Ask whether the unit is pre-wired. It often decides whether you can self-install the same day.
Already a customer?
Neighbors in Colorado average $72/mo. If you're above that, it's time to compare.
Boulder internet FAQs
Straight answers before you compare plans at your address.
Who provides internet in Boulder, CO?
Xfinity, Quantum Fiber, T-Mobile Home Internet all serve addresses in and around 80302. Exact availability depends on your street.
What is the cheapest internet in Boulder?
Xfinity lists entry plans from about $35/mo. Promos usually step up after year one, so compare the post-promo price before you commit — we show it on every provider page.
Can I get fiber in Boulder?
Yes — Xfinity and Quantum Fiber offer fiber plans in the Boulder area. Statewide, about 45% of Colorado addresses can get fiber today; enter your ZIP to confirm yours.
Why do internet prices vary by address in Boulder?
Providers price plans by service area, available network and current promotion. Two Boulder addresses can see different options, so use your ZIP for a shortlist and confirm the final price, fees and terms with the provider.
What should I compare before choosing a Boulder internet plan?
Compare the regular price after any promotion, expected speed, equipment charges, installation fees, contract terms and cancellation rules. The lowest starting price is not always the lowest total cost.
Compare every Boulder plan in one search
One free ZIP search compares illustrative prices, speeds and terms from providers with footprints in your area.