Internet providers in Greenwich, Connecticut

Don't guess from the city name. Internet availability can differ between neighboring addresses. Enter your street address to see plans you can buy.

Results are address-specific; promotions and fees can change the total. Utility Rates may earn a commission when you use this tool—see the partner disclosure in the widget and our privacy policy (third-party tools).

No address yet? Compare the providers reported for Greenwich below.

Greenwich internet at a glance

Greenwich’s filing includes Optimum as both fiber and cable, and Verizon fiber.

Downtown and the backcountry can differ. Enter the street address and the unit.

Speeds below are the maximums providers reported to the FCC for Greenwich. They are not monthly prices and not the share of homes covered. Plans and eligibility are in the address box above.

Major providers in this filing: Optimum, Verizon, AT&T, T-Mobile
Fastest advertised: Optimum · 8 Gbps · Fiber
Fastest upload: Optimum · 8 Gbps up · Fiber
Fiber in this filing: Yes
Cable in this filing: Yes
5G home internet in this filing: Yes · Verizon, T-Mobile

Compare internet providers in Greenwich

Optimum in Greenwich
Fiber · up to 8 Gbps down · 8 Gbps up
Also filed here: Cable (940 Mbps down).
Where this fiber filing reaches the building, the reported upload matches the download.
Check Optimum at your address
Verizon in Greenwich
Fiber · up to 980 Mbps down · 880 Mbps up
Also filed here: Fixed Wireless (300 Mbps down).
Filed as fiber. Confirm whether your address is on that plant, and compare the upload, not only the download.
Check Verizon at your address
AT&T in Greenwich
Fixed Wireless · up to 100 Mbps down · 20 Mbps up
Wireless filing. Building materials and line of sight can change what the address check returns.
Check AT&T at your address
T-Mobile in Greenwich
Fixed Wireless · up to 100 Mbps down · 20 Mbps up
Wireless filing. Building materials and line of sight can change what the address check returns.
Check T-Mobile at your address

Satellite options for Greenwich are listed with the other connection types below, not beside these providers.

Internet providers by technology in Greenwich

Fiber, cable, fixed wireless, and DSL reported for Greenwich. These are provider-reported maximums, not prices and not the percent of homes covered.

Notable options in this FCC sample

Optimum — Highest provider-reported max download in our Greenwich FCC sample (8 Gbps)
Verizon — Fiber filing in our sample (up to 980 Mbps download reported)
AT&T — Fixed wireless option where listed (up to 100 Mbps download reported)
T-Mobile — Fixed wireless option where listed (up to 100 Mbps download reported)
Starlink — Satellite alternative where wireline is limited (FCC filing at our Greenwich sample point)
HughesNet — Satellite alternative where wireline is limited (FCC filing at our Greenwich sample point)
Viasat Inc — Satellite alternative where wireline is limited (FCC filing at our Greenwich sample point)

Fastest internet providers in Greenwich

Highest provider-reported download speeds for Greenwich. A speed in this table is not a plan you can buy until the address check says so.

Fastest internet providers in Greenwich for Greenwich from FCC filings at sample coordinates
Provider	Connection	Max download	Max upload
Optimum	Fiber	8 Gbps	8 Gbps
Verizon	Fiber	980 Mbps	880 Mbps
Optimum	Cable	940 Mbps	35 Mbps
Verizon	Fixed Wireless	300 Mbps	20 Mbps
Starlink	Satellite	280 Mbps	30 Mbps

Fiber internet providers in Greenwich

Fiber filings for Greenwich. Upload often matches download where this plant reaches the building.

Fiber internet providers in Greenwich for Greenwich from FCC filings at sample coordinates
Provider	Connection	Max download	Max upload
Optimum	Fiber	8 Gbps	8 Gbps
Verizon	Fiber	980 Mbps	880 Mbps

Cable internet providers in Greenwich

Cable filings for Greenwich. Compare upload as well as download before you pick a plan.

Cable internet providers in Greenwich for Greenwich from FCC filings at sample coordinates
Provider	Connection	Max download	Max upload
Optimum	Cable	940 Mbps	35 Mbps

Fixed wireless internet in Greenwich

Fixed wireless filings for Greenwich, including 5G home where Verizon or T-Mobile appears. Line of sight and the building can change the result.

Fixed wireless internet in Greenwich for Greenwich from FCC filings at sample coordinates
Provider	Connection	Max download	Max upload
Verizon	Fixed Wireless	300 Mbps	20 Mbps
AT&T	Fixed Wireless	100 Mbps	20 Mbps
T-Mobile	Fixed Wireless	100 Mbps	20 Mbps

Other internet options in Greenwich

Satellite is in the FCC filing. Where fiber or cable is available at the address, it is usually a fallback rather than the main choice. Latency and data policies differ from wireline.

Provider	Connection	Max download	Max upload
Starlink	Satellite	280 Mbps	30 Mbps
HughesNet	Satellite	100 Mbps	5 Mbps
Viasat Inc	Satellite	50 Mbps	3 Mbps

Internet providers in Greenwich (FCC filing sample)

Table lists provider-reported residential filings at our stored coordinate for Greenwich. This is research data—not live pricing, percent coverage, or a guarantee that every brand sells at your address. See how we use FCC data below for sample methodology, then confirm plans in the comparison tool above.

Connection types in this FCC sample

Fixed Wireless (3)
Satellite (3)
Fiber (2)
Cable (1)

FCC provider filings for Greenwich at sample coordinates 41.0262, -73.6282
Provider	Connection	Max download	Max upload
Optimum	Fiber	8 Gbps	8 Gbps
Verizon	Fiber	980 Mbps	880 Mbps
Optimum	Cable	940 Mbps	35 Mbps
Verizon	Fixed Wireless	300 Mbps	20 Mbps
Starlink	Satellite	280 Mbps	30 Mbps
AT&T	Fixed Wireless	100 Mbps	20 Mbps
HughesNet	Satellite	100 Mbps	5 Mbps
T-Mobile	Fixed Wireless	100 Mbps	20 Mbps
Viasat Inc	Satellite	50 Mbps	3 Mbps

How much internet speed do you need in Greenwich?

Headline Mbps in ads are often “up to” values. Match the plan to how many people and devices share the connection—not only the fastest number on a provider card. Upload speed matters for video calls and cloud backups.

25–100 Mbps

Web, email, HD streaming
1–2 devices
Below the FCC broadband benchmark

100/20 Mbps

4K streaming, online gaming, video calls
3–5 devices
Meets the FCC broadband benchmark

500 Mbps – 1 Gig

Multiple 4K streams, large uploads, smart home
5+ devices
Ideal for 6+ people or heavy WFH

Mbps (megabits per second) measures data rate. In its 2024 Section 706 Report (adopted March 14, 2024), the FCC raised its fixed broadband benchmark from 25/3 Mbps to 100 Mbps download paired with 20 Mbps upload, and set a long-term goal of 1 Gbps down / 500 Mbps up. Fiber and cable plans in Greenwich often exceed the 100/20 benchmark where plant reaches your address.

Check out internet providers in nearby Connecticut cities

Before you order in Greenwich

Use your exact address. Fairfield County can include multiple networks—or pockets with only one wireline option. Summaries on this page and FCC filings describe sample points, not a quote for your home.
Check HOA and apartment rules. Bulk agreements or approved-provider lists can limit what you can install—ask the property manager if results look narrow.
Compare technology types. Plans may be labeled cable, fiber, DSL, fixed wireless, or satellite—upload speed and latency vary. Match the plan to how you use the connection, not only headline download Mbps.
Cross-check government data. Our FCC section below explains the one-point sample we store; the FCC National Broadband Map lets you search your address. The shopping tool above shows retail offers—they can disagree, so confirm with the ISP before you sign up.

How we use FCC broadband data

This section explains how we build the FCC provider table above for Greenwich. It is methodology—not a coverage map for the whole city and not a substitute for checking your street address in the comparison tool.

We take one sample coordinate per city from our dataset (the point we store in cities.json, usually a centroid or chosen coordinate—not an address you enter on this page). We query the FCC National Broadband Map API for residential provider filings at that latitude and longitude, then store the rows in fcc-broadband-by-city.json for this page. Each row is a brand + technology + reported max speeds; multiple rows per brand are normal (for example separate cable and fiber filings).

Filings describe what providers report at that point. They are not retail prices, promotional bundles, percent of homes served, or a guarantee that service can be installed at your driveway.

FCC data is provider-reported and may lag new construction, while shopping-tool results can vary by address, promotion, and provider eligibility. We use FCC data for technology and availability context, not final pricing.

Internet providers submit updated broadband availability to the FCC on a semiannual schedule—filing deadlines are typically March 1 and September 1 (or the next business day). Even after the FCC publishes a new dataset, filings can trail fiber overbuilds, new subdivisions, and retired copper plant by months.

What this sample shows

Sample coordinates: 41.0262, -73.6282; One point in our city dataset
Distinct provider names: 7; 9 provider+technology filing rows in the table above
Fastest reported download: up to 8 Gbps; Highest max in this sample only
Satellite in sample: Yes; Starlink, HughesNet, Viasat Inc

Our stored copy of this sample was last refreshed from the FCC API on 2026-05-25. Batch updates run on our schedule; the underlying FCC map updates on the agency's semiannual publication cycle. Cross-check your address on the FCC National Broadband Map or in the comparison tool above before you order service.

Frequently asked questions

Broadband networks follow street-level infrastructure, franchise areas, and sometimes HOA or building agreements—not just Fairfield boundaries or the Greenwich label. Two homes on the same road can fall on different sides of a fiber build or cable node. Enter your full street address (and unit, if applicable) in the tool for the most relevant plans.

Enter your street address in the tool at the top of this page. Plan names, introductory prices, and fees change by address and promotion, so this page does not publish a citywide price list. The speeds further down are provider-reported maximums from an FCC filing, not the price of a plan.

The FCC sample on this page is a single provider-reported snapshot at our stored coordinates for Greenwich. The embedded comparison tool is a separate shopping flow: it may show different plans, promotions, or eligibility for your exact service location. Use both for research, then confirm pricing and installation with the ISP before you order.

The FCC National Broadband Map is the government’s map of where providers report offering service. This page adds Connecticut-local context and embeds a partner comparison tool for plans and promotions. Neither replaces a serviceability check or order confirmation from your chosen provider.

Download and upload speeds in marketing materials are often “up to” values and can depend on network load, your Wi-Fi, and inside wiring. If you work from home or upload large files, compare upload speeds and any data policies—not only the headline download number. Run a wired speed test after install if performance matters.

Fiber coverage grows across Connecticut but remains address-specific. Urban and suburban areas often see fiber or high-tier cable; some addresses still rely on DSL, fixed wireless, or satellite. Use the address search below rather than assuming the same technology as a nearby neighborhood.

The comparison tool shows current retail offers for the address you enter. Our FCC table reflects one provider-reported sample at stored coordinates for Greenwich. Filings can omit some brands, use different corporate names, or lag new construction. Use both for research, then confirm with the ISP.

Fiber usually offers the best upload speeds and latency where available. Cable is widely deployed and often competitive on download. Fixed wireless and 5G home can be strong where wireline has not been built to the lot. Satellite works almost everywhere but typically has higher latency. Match technology to your address check, not only city-level summaries.

Compare internet plans for your address