Cos Cob is a neighborhood with its own zip code in the Town of Greenwich.  Located on the Connecticut Gold Coast, Cos Cob sits on the western side of the Mianus River.

The name “Cos Cob” is derived from the Coe family. In 1641 Robert Coe moved to the Stamford plantation and became one of its leading figures. At about the same time, he encouraged a cousin (John Coe) to sail from England and settle at the mouth of the Mianus River where he was granted 5 acres of land.

John built a sea wall at the mouth of the river to protect low lying lands and to provide a safe moorage for small craft. A sea wall at that time was referred to as a “cob” — and thus it became Coes’ cob, and eventually shortened to Cos Cob.

In the late 19th and early 20th centuries, a group of artists, many of them American Impressionists, gathered during the summer months and established the American Impressionist Cos Cob Art Colony.  Today, the Greenwich Art Society, an off-spring of the group, continues  to support local arts in town.


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Total Population 7,396
Population in Households 7,370
Population in Families 6,419
Median Household Income $161,479
Average Household Income $220,560
Per Capita Income $82,220
Total Housing Units 2,912 (100%)
Owner Occupied HU 1,868 (64.1%)
Renter Occupied HU 886 (30.4%)
Vacant Housing Units 158 ( 5.4%)
Median Home Value $1,125,773
Average Home Value $1,235,546
Total Households 2,754
Average Household Size 2.68
Family Households 2,008
Average Family Size 3


BUSH-HOLLEY HOUSE MUSEUM, 47 Strickland Rd, Cos Cob, CT 06807, (203) 869-6899

Bush-Holley House is the centerpiece of Bush-Holley Historic Site on Cos Cob Harbor in Greenwich.  A unique presentation provides visitors with two distinct time periods: the New Nation(1790-1825) and the Cos Cob Art Colony (1890-1920). Eight evocative, well-documented rooms tell a story of change over time, while the historic buildings, landscape and gardens evoke the turn of the twentieth century when Cos Cob became the first art colony in Connecticut, a cradle of American Impressionism.


Museum Store and Café Hours: Monday through Friday, 9 am to 5 pm & Saturday and Sunday, noon to 4 pm

Museum Galleries:  Wednesday through Sunday, noon to 4 pm

Bush-Holley House

January—February: Saturday and Sunday
March—December: Wednesday through Sunday
Guided tours at 1, 2 and 3 pm

Administrative Office

Open Monday through Friday, 9 am—5 pm

Museum Admission

Admission to the Bush-Holley House (by guided tour) and museum gallery:

  • Adults: $10
  • Seniors and Students: $8
  • Always free to members and children under 18

Free admission to the public: first Wednesday of each month

Groups of 10 or more must make advance reservations.
Group reservation rate is $7 per person.


COS COB LIBRARY, 25 Sinawoy Rd, Cos Cob, CT 06907, (203) 622-6883

]The Cos Cob Library is the hub of the Cos Cob community. Choose from among 40,000 materials including books, movies, magazines, and CDs.

Wifi is available throughout and 12 public computers are available in the building. The Community Room displays art work throughout most of the year and the room is available for local meetings and programs. The Friends of Cos Cob Library support programs including several book clubs, numerous storytime and craft programs for children, author visits, informative lectures for adults, and much more.


Mondays:  12 p.m. – 8 p.m.

Tuesday-Saturday:  9 a.m. – 5 p.m.

Sunday:  Closed


22 Sound Shore Drive, Cos Cob, CT 06807

Cos Cob Park a nine-acre waterfront park on Cos Cob Harbor, opposite the Cos Cob train station.  The park offers a multi-use synthetic turf playing field, a playground, a patio area with stadium-like seating on the water’s edge and a picnic area.

Cos Cob Park sits on the site of the former Cos Cob power plant that provided power to the Metro-North Railroad.


130 Bible Street, Cos Cob, CT 06807

Founded in 1957 by Jane Duff, Greenwich Botanical Center is a member-based non-profit volunteer organization dedicated to promoting horticulture, conservation and the arts through educational programs, outreach activities and special events.

In 2018 the organization changed its name from the Greenwich Education Center to Greenwich Botanical Center and introduced a new logo and updated mission to the community. These changes were made to better reflect a modernized programming roster that met the needs of new and shifting generations of nature lovers in Greenwich and beyond.

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