Internet providers in Longmont, Colorado 80503
ZIP code 80503 is in Longmont, Boulder County, Colorado. Compare the major providers below, then check availability for your address.
Internet in Longmont 80503: local snapshot
About 96% of the 15,011 households in 80503 have a broadband subscription, 3 points above the Colorado average of 93%. That ranks 80503#91 of 459 ZIP codes in Colorado for broadband adoption. Very few households (3%) are offline, suggesting internet service is widely used in this area.
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2023). These figures describe the area, not the providers available at your address.
Compare internet providers in Longmont, Colorado
Share of residential locations in Longmont 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 | City of Longmont | Fiber | 99% | |
| 2 | Xfinity | Cable | 97% | |
| 3 | CenturyLink / Quantum Fiber | Fiber, DSL | 89% | |
| 4 | T-Mobile Home Internet | Fixed wireless | 70% | |
| 5 | JAB Wireless | Fixed wireless | 52% | |
| 6 | Verizon | Fiber, Fixed wireless | 52% | Check availability |
| 7 | AT&T | Fiber, DSL, Fixed wireless | 27% | Check availability |
| 8 | Smiling J | Fiber, Fixed wireless | 5% | |
| 9 | TDS Telecom | Fiber, Cable, DSL | 2% |
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 Longmont?
Fiber is widely available: about 99%+ of locations in Longmont can get it. Gigabit-class service (1,000 Mbps down) is reported for about 99% of locations. DSL is still reported for about 64% of locations, which can be a fallback where fiber and cable do not reach. Fixed wireless home internet is reported for about 80% of locations.
FCC National Broadband Map, data as of December 31, 2025: share of residential locations in Longmont that providers report they can serve. City-level figures, not your address.
What to know about internet in Longmont 80503
City of Longmont reports service to the most residential locations in Longmont, about 99%. 6 providers report coverage of at least half of locations (City of Longmont, Xfinity, CenturyLink / Quantum Fiber, T-Mobile Home Internet, JAB Wireless, and Verizon), so the market looks competitive. Fiber-focused providers reporting service here include City of Longmont (99%). T-Mobile Home Internet and JAB Wireless offer fixed wireless home internet, an option if you prefer no cable or fiber installation.
Broadband adoption in 80503 (96%) is close to the Longmont average of 94%. By median household income, 80503 ranks 1 of 3 ZIP codes in Longmont. The median age of residents is 43.
Frequently asked questions
Is fiber internet available in Longmont?
Yes, in part. About 100% of residential locations in Longmont can get fiber, 94% can get cable, and about 99% can get gigabit-class speeds, per FCC data. Availability depends on your exact address.
Which internet provider has the widest coverage in Longmont?
City of Longmont reports service to about 99% of residential locations in Longmont, the most of any provider, per FCC data. Availability still depends on your address.
How many internet providers serve Longmont?
8 providers report service to at least 2% of locations in Longmont, and 6 cover at least half. Satellite (HughesNet, Viasat, Starlink) is also available nearly everywhere.
Is there fiber internet in Longmont?
Fiber providers reporting service in Longmont include City of Longmont (99% of locations). Other providers may also offer fiber in parts of the city, so check your address.
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 Longmont 80503?
Most households are well served by 100–300 Mbps. Heavy streaming, gaming or many connected devices may benefit from 500 Mbps or more.
Other ZIP codes in Longmont
Internet providers near Longmont
- Frederick, CO (8 mi)
- Firestone, CO (8 mi)
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- Berthoud, CO (11 mi)
- Lafayette, CO (12 mi)
- Boulder, CO (13 mi)
- Louisville, CO (14 mi)
- Broomfield, CO (15 mi)