Internet providers in Gaithersburg, Maryland
Gaithersburg is in Montgomery County, Maryland, 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 Gaithersburg, about 98%. 4 providers report coverage of at least half of locations (Xfinity, Verizon, T-Mobile Home Internet, and AT&T), so the market looks competitive. T-Mobile Home Internet offers fixed wireless home internet, an option if you prefer no cable or fiber installation.
Our picks for internet in Gaithersburg
- Widest coverage: Xfinity (about 98% of locations)
- No-install wireless option: T-Mobile Home Internet (about 82% of locations)
Picks are based on the share of locations each provider reports serving, not on price or customer reviews.
ZIP codes in Gaithersburg
Compare internet providers in Gaithersburg, Maryland
Share of residential locations in Gaithersburg 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 | 98% | |
| 2 | Verizon | Fiber, Fixed wireless | 91% | Check availability |
| 3 | T-Mobile Home Internet | Fixed wireless | 82% | |
| 4 | AT&T | Fiber, DSL, Fixed wireless | 61% | Check availability |
| 5 | Astound Broadband | Fiber, Cable | 35% | |
| 6 | Montgomery County, Maryland | Fiber | <1% |
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 Gaithersburg?
Fiber is widely available: about 69% of locations in Gaithersburg can get it. Gigabit-class service (1,000 Mbps down) is reported for about 91% of locations. Fixed wireless home internet is reported for about 82% of locations.
FCC National Broadband Map, data as of December 31, 2025: share of residential locations in Gaithersburg that providers report they can serve. City-level figures, not your address.
Best-connected ZIP codes in Gaithersburg
Frequently asked questions
Is fiber internet available in Gaithersburg?
Yes, in part. About 69% of residential locations in Gaithersburg can get fiber, 98% can get cable, and about 91% can get gigabit-class speeds, per FCC data. Availability depends on your exact address.
Which internet provider has the widest coverage in Gaithersburg?
Xfinity reports service to about 98% of residential locations in Gaithersburg, the most of any provider, per FCC data. Availability still depends on your address.
How many internet providers serve Gaithersburg?
5 providers report service to at least 2% of locations in Gaithersburg, and 4 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 Gaithersburg?
Most households are well served by 100–300 Mbps. Heavy streaming, gaming or many connected devices may benefit from 500 Mbps or more.