Greenwich (downtown)
101 Field Point Rd, Greenwich, CT 06830
Greenwich is a coastal town in Fairfield County on the New York state line, settled in 1640 and made a township by the Connecticut General Assembly in 1665. Long Island Sound forms its southern border, and the town includes distinct sections such as Old Greenwich, Riverside, Cos Cob, Byram, Glenville and central Greenwich around Greenwich Avenue. Metro-North's New Haven Line runs through town with four stations, and express trains reach Grand Central Terminal in about 50 minutes.
Greenwich uses several zip codes by section: 06830 (Greenwich/Byram), 06831 (Glenville/back country), 06870 (Old Greenwich) and 06878 (Riverside).
| Area | Zip code | Where it is |
|---|---|---|
| Greenwich (downtown) | 06830 | Around Greenwich Avenue and Town Hall. |
| Old Greenwich | 06870 | East of downtown, near the Metro-North Old Greenwich station and Greenwich Point Park. |
| Riverside | 06878 | Between Old Greenwich and Cos Cob, with its own Metro-North station. |
| Cos Cob | 06807 | Along the Mianus River, with a Metro-North station. |
| Byram | 06830 | The southwestern section of town near the New York line. |
Greenwich covers about 47.8 square miles and borders Stamford, Port Chester, NY, Rye Brook, NY and North Castle, NY. It was incorporated in 1665.
Start with Greenwich Point Park and Bruce Museum, then 3 more below.
A waterfront park on Long Island Sound with beaches, trails and the Bruce Museum Seaside Center. A beach pass is required for entry, for residents and non-residents alike.
Old Greenwich
Plan a visit to Greenwich Point Park (opens in a new tab)A museum of art and science in downtown Greenwich, with a seasonal Seaside Center location inside Greenwich Point Park.
1 Museum Dr, Greenwich, CT
Plan a visit to Bruce Museum (opens in a new tab)The town's main shopping street, lined with stores and restaurants running from the train station area up toward Town Hall.
Downtown Greenwich
A town park near downtown with ball fields, a pond and walking paths.
Greenwich
A wooded park along the Mianus River with trails, spanning Greenwich and Stamford.
Cos Cob/Stamford line
Greenwich was settled in 1640 and made a township by the Connecticut General Assembly in 1665; its early land purchase from the Siwanoy is recorded as an exchange for 25 English coats.
General Israel Putnam made a notable Revolutionary War escape through Greenwich in 1779.
The town takes its name from Greenwich, London.
Greenwich's coastline on Long Island Sound and its river parks give it a mix of beach and woodland recreation.
Downtown Greenwich along Greenwich Avenue and the village centers of Old Greenwich, Riverside and Cos Cob are walkable for shops and the train station; the rest of town, including the back country north of the Merritt Parkway, is spread out and car-dependent.
101 Field Point Rd, Greenwich, CT 06830
Approximate, without traffic.
Metro-North's New Haven Line serves four stations in town: Greenwich, Old Greenwich, Riverside and Cos Cob, with service to Grand Central Terminal (about 50 minutes express) and to Stamford and New Haven. Greenwich also operates local Hart Transit bus routes.
Greenwich's 2026–27 mill rate is 10.125, which is $10.125 of tax for every $1,000 of assessed value. Some areas also pay a fire or special district tax on top of that. Connecticut taxes a home at 70% of its appraised value, so every $100,000 of value costs about $709 a year in taxes at 10.125 mills.
| 12 months ending | Single-family | Condo |
|---|---|---|
| Sep 2024 | $2,600,000448 sales | $1,155,000142 sales |
| Sep 2025 | $2,900,000446 sales | $1,149,500126 sales |
October to September, state records. Text us for this month's sales.
10.125mills, fiscal year 2026–27
| Fiscal year | Town rate |
|---|---|
| 2022–23 | 11.28 |
| 2023–24 | 11.393 |
| 2024–25 | 11.712 |
| 2025–26 | 12.041 |
| 2026–27 | 10.125 |
Greenwich's town rate went from 11.28 in 2022–23 to 10.125 in 2026–27. Next revaluation: October 1, 2030.
Things to look into on a Greenwich purchase: CHFA limits, the flood map, coastal flood zones and beach & transfer permits.
CHFA sets income and purchase price limits town by town, and some census tracts are Targeted Areas with different rules. We check them with you before you shop.
See CHFA's limits map (opens in a new tab)Greenwich's Long Island Sound shoreline and the tidal reaches of the Mianus River put low-lying coastal sections such as Old Greenwich, Riverside, Byram and parts of Cos Cob in FEMA flood zones. We take an early look at FEMA's map before you offer. That's not a flood determination: the official determination ordered with your loan decides whether flood insurance is required.
FEMA's flood map for Greenwich (opens in a new tab)Sections of Greenwich along Long Island Sound and the Mianus River, including parts of Old Greenwich, Riverside and Byram, sit in FEMA flood zones. We check the flood map and get a flood insurance estimate before you make an offer on shoreline property.
Access to Greenwich Point Park and other town beaches, and to the Holly Hill transfer station, requires a resident permit. Ask the town clerk's office about permit costs and renewal timing after closing.
Holly Hill permit info (opens in a new tab)All loans are subject to credit approval, underwriting, and property and program requirements. CHFA and USDA limits and eligibility are set by those agencies and change from time to time.
Send us a Greenwich address and we'll run the numbers, taxes included.
Who to call in Greenwich: Eversource for power.
Holly Hill Lane, Greenwich, CT
Replacement permit tag $25
Transfer station details (opens in a new tab)Greenwich Town Hall is at 101 Field Point Rd, Greenwich, CT 06830. Hours: Monday–Friday 8:00 a.m.–4:00 p.m.. Main line: (203) 622-7700. Each link opens that office's page on the town's website.
The short answers. Call or text us for the long ones.
Greenwich's 2026–27 mill rate is 10.125, which is $10.125 of tax for every $1,000 of assessed value. Some areas also pay a fire or special district tax on top of that. The motor vehicle rate is 10.125 mills.
Connecticut assesses homes at 70% of appraised value, so a $500,000 home would be assessed at about $350,000. At 10.125 mills that's about $3,544 a year, or about $295 a month, before any district tax. The actual bill depends on the town assessor's appraisal, not the price you pay.
In the 12 months from October 2024 through September 2025, the median single-family sale in Greenwich was $2,900,000 across 446 sales, compared with $2,600,000 the year before. The median condo sale was $1,149,500 across 126 sales.
Greenwich's next revaluation takes effect October 1, 2030, on the state's schedule. The new assessments first show up on the tax bills due in July 2031.
Greenwich is in Fairfield County.
06830 (Greenwich/Byram), 06831 (Glenville/back country), 06870 (Old Greenwich) and 06878 (Riverside).
Yes, Metro-North's New Haven Line stops at four stations in town: Greenwich, Old Greenwich, Riverside and Cos Cob.
Express Metro-North trains reach Grand Central Terminal in about 50 minutes.
Yes, a beach pass is required to enter Greenwich Point Park, for residents and non-residents.
Most of town has curbside pickup; residents can also use the Holly Hill Resource Recovery Facility with a valid permit.
Neighbors of Greenwich in Fairfield County and nearby. All Fairfield County towns.