Internet providers in Greenwich, Connecticut
Greenwich is in Fairfield County, Connecticut, and has 2 ZIP codes. Available providers can differ from one ZIP code to the next, so pick yours below.
Verizon reports service to the most residential locations in Greenwich, about 86%. 4 providers report coverage of at least half of locations (Verizon, Optimum, 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 Greenwich
- Widest coverage: Verizon (about 86% of locations)
- No-install wireless option: T-Mobile Home Internet (about 67% of locations)
Picks are based on the share of locations each provider reports serving, not on price or customer reviews.
ZIP codes in Greenwich
Compare internet providers in Greenwich, Connecticut
Share of residential locations in Greenwich 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 | Verizon | Fiber, Fixed wireless | 86% | Check availability |
| 2 | Optimum | Fiber, Cable | 84% | |
| 3 | T-Mobile Home Internet | Fixed wireless | 67% | |
| 4 | AT&T | Fiber, DSL, Fixed wireless | 59% | Check availability |
Satellite internet
| 1 | HughesNet | Satellite | 99%+ | |
| 2 | Starlink | Satellite | 99%+ | |
| 3 | Viasat | 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 Greenwich?
Fiber is widely available: about 85% of locations in Greenwich can get it. Gigabit-class service (1,000 Mbps down) is reported for about 72% of locations. 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 Greenwich that providers report they can serve. City-level figures, not your address.
Frequently asked questions
Is fiber internet available in Greenwich?
Yes, in part. About 85% of residential locations in Greenwich can get fiber, 84% can get cable, and about 72% can get gigabit-class speeds, per FCC data. Availability depends on your exact address.
Which internet provider has the widest coverage in Greenwich?
Verizon reports service to about 86% of residential locations in Greenwich, the most of any provider, per FCC data. Availability still depends on your address.
How many internet providers serve Greenwich?
4 providers report service to at least 2% of locations in Greenwich, and 4 cover at least half. Satellite (HughesNet, Starlink, Viasat) 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 Greenwich?
Most households are well served by 100–300 Mbps. Heavy streaming, gaming or many connected devices may benefit from 500 Mbps or more.