The Red Mill, 1896
Cos Cob’s story
146 years in pictures
The archive holds 6 old photos and papers going back to 1896.
- 1880Cos Cob is settled
Cos CobCT
A town of 7,546, settled in 1880.
2 bordering townsMap →
Photo: Hayden Soloviev · CC BY 4.0
Population
7,546
Census survey, 2020–24
Median home value
$1.21M
Census ACS
Household income
$190K
median
Median age
39.6
years
Jobs based here
1,750
A commuter town
Is Cos Cob a good place to live?
Cos Cob’s trail network density is 0.3 miles per square mile, where Connecticut’s towns sit at 1.3 and U.S. towns at 0.4. The biggest park or preserve is Montgomery Pinetum, at 43 acres. We don’t grade Cos Cob yet; the figures below are still real.
A commuter town
95% of working residents leave Cos Cob for work
Where Cos Cob’s working residents go each day. Line width shows the share.
1,750jobs based in Cos Cob
5%of working residents work in town
10 mimedian commute distance
Census LEHD 2023
Nearby attractions
All 607 attractions →Central Park and 512 more within 40 miles
Museums, parks, gardens and other places to visit around Cos Cob. Close and well known come first.
Big draw27 mi City parkCentral Park40.0M visitors a year
Big draw29 mi Stadium & arenaMadison Square Garden
Big draw30 mi MuseumUnited States Military Academy
Big draw30 mi Stadium & arenaMetLife Stadium
Big draw28 mi TheatreStudio 54
Big draw27 mi MuseumMetropolitan Museum of Art2.0M visitors a yearSources: National Park Service · ski areas © OpenSkiMap / OpenStreetMap contributors · Wikidata · Wikipedia readership · photos via Wikimedia Commons
Photo credits
Central Park: Ed Yourdon from New York City, USA, CC BY-SA 2.0 · Madison Square Garden: Ajay Suresh from New York, NY, USA, CC BY 2.0 · United States Military Academy: USMA Public Affairs Office, Public domain · MetLife Stadium: babyknight, CC BY 2.0 · Studio 54: Americasroof (talk), CC BY-SA 3.0 · Metropolitan Museum of Art: Hugo Schneider, CC BY-SA 2.0
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Getting set up
Moving to Cos Cob: who provides what
Cos Cob is unincorporated, so Fairfield County and regional agencies provide most services.
PowerEversource28.9¢/kWh · EIA 2025HIFLD · EIA
WaterAquarion WaterNo health-based violations in 5 years · EPAEPA
Internet4 providers99% of addresses get 100/20 MbpsFCC
Trash & county servicesFairfield CountyFairfield County provides services here
Register to voteOnlineIn Connecticut you can register online until 18 days before Election Day, in person up to and including Election Day, or by mail (postmarked 18 days before).vote.govWho runs elections hereGreenwich Town ClerkTown of Greenwich; contacts on the Handbook page.FVAP, Jul 2021
ZIP codes06807, 0683006807 89% · 06830 11%Census 2020
EPA SDWIS (Oct 9, 2026) · HIFLD + EIA-861 2025 · Census 2020 ZCTAs · NCES 2024–25 · registration: vote.gov, updated Sep 30, 2026.
The data
Ordered by what stands out in Cos Cob.
Work & commute
Cos Cob has 0.7 jobs per working resident, so most workers leave town for work
The share of working residents in Cos Cob who work locally: 5.4%. Between 2013 and 2023, jobs here rose by 359, to 1,750. The town’s middle household income comes in at $190,000. Its typical journey to work stands at 29 minutes, against 27 minutes in Connecticut’s towns and 25 minutes across U.S. towns.
5%work in town
| Cos Cob | Connecticut towns | U.S. towns | |
|---|---|---|---|
| Median household income | $190,000 | $109,000 | $80,000 |
| Average trip to work | 29 minutes | 27 minutes | 25 minutes |
| Working residents who work in town | 5.4% | 11% | 8% |
| Below the poverty line | 5.6% | 5.8% | 9.6% |
Where working residents work
In Cos Cob5%
Greenwich27%
New York18%
Stamford14%
Norwalk3%
10 mi
median commute distance
1,750
jobs based in Cos Cob
A commuter town
jobs vs. working residents
Census LEHD 2023 · ACS
Natural hazards
Top of a high hazard risk in Cos Cob: inland flooding
Storm and flood damage is expected to run higher than in 69% of U.S. communities. Of the losses FEMA expects in Cos Cob, 75% come from inland flooding and 15% from hurricanes.
69risk score of 100
FEMA risk score
Inland floodingHurricanes
FEMA National Risk Index · OpenFEMA
Climate
Four seasons and pleasant summers: that is Cos Cob’s year
July afternoons reach 85°, January nights drop to 24° and about 34 inches of snow falls in a winter.
34″snow a winter
Typical low → high °F
Winter26–42°
Spring41–60°
Summer64–83°
Fall48–65°
Oct 31
typical first frost
Apr 12
typical last frost
+2.2°
vs. the 20th-century average
NOAA U.S. Climate Normals, 1991–2020
Outdoors
Cos Cob has set aside 14.1% of its land for conservation
In 11 parks and preserves, walkers have 0.7 miles of trail. Parks and preserves in Cos Cob: 11, covering 114 acres.
14.1%conserved
14.1%
conserved · 204 of 1,444 acres
0.7 mi
of trails · 0.3 per sq mi
| Biggest places to walk | Trails | Acres |
|---|---|---|
| 1. Montgomery Pinetum | 0.3 mi | 43 |
| 2. Montogomery Park | — | 42 |
| 3. Bible Street Playground | 0.1 mi | 6 |
Trails & parks © OpenStreetMap contributors · Conserved land: USGS PAD-US
Health
How healthy Cos Cob is
Among adults in Cos Cob, 12% report frequent mental distress. Only 9 of the 155 Connecticut towns we compare have a lower share of adults who have been diagnosed with depression than Cos Cob.
| Cos Cob | Connecticut towns | U.S. towns | |
|---|---|---|---|
| Obesity (CDC PLACES) | 23% | 30% | 35% |
| Frequent mental distress (CDC PLACES) | 12% | 15% | 17% |
| Depression (CDC PLACES) | 17% | 22% | 23% |
| Frequent physical distress (CDC PLACES) | 9.6% | 12% | 14% |
32 measures vs. Connecticut
25 better7 too close to call0 worse
| What stands out | Cos Cob | CT |
|---|---|---|
| Fewer adults facing food insecurity | 7.1% | 14.9% |
| Fewer older adults who have lost all their teeth | 4.7% | 9.8% |
Greenwich Hospital Association
2.1 mi away · emergency room
None
primary care, dental or mental-health shortage
CDC PLACES 2025 · modeled estimates for adults · CMS · HRSA
Housing
The median home in Cos Cob sells for about $1.51M
For households in Cos Cob, the share who own their home is 67%. Among 152 Connecticut towns, just 5 have a higher rent at the middle of the market than Cos Cob. Also worth knowing: a home in Cos Cob typically sold within 38 days of listing.
$1.51Mmedian sale price
| Cos Cob | Connecticut towns | U.S. towns | |
|---|---|---|---|
| Median rent | $3,067 a month | $1,450 a month | $1,185 a month |
| Households that own their home | 67% | 81% | 73% |
Market temperature
38
days on market
99.3%
sale-to-list price
10
homes sold in May
Census ACS, 2020–24 · Zillow Home Value Index · Redfin Data Center
Keep exploring
Everything we know about Cos Cob
17pages on Cos Cob
The big questions
Out and about
After high school
Colleges nearby
10 within 15 miles of the center of Cos Cob
University of Connecticut-StamfordUniversity or college · Public · Stamford2.7 mi$18,150 in-state tuitionSUNY at Purchase CollegeUniversity or college · Public · Purchase, NY5.7 mi$8,953 in-state tuitionSUNY Westchester Community CollegeCommunity college · Public · Valhalla, NY10.4 mi$5,948 in-state tuition
About 4 of every 100 Cos Cob residents are enrolled in college, against 7 across Connecticut.
About Cos Cob
Census-designated place in Connecticut, United States
Cos Cob is a neighborhood and census-designated place in the town of Greenwich, Connecticut, United States. It is located on the Connecticut shoreline in southern Fairfield County. It had a population of 6,873 at the 2020 census. Cos Cob is located on the western side of the mouth of the Mianus River. The American Impressionist Cos Cob Art Colony flourished in the late 19th and early 20th centuries. An offshoot of the group, the Greenwich Art Society, continues to support local artists in town. The town of Greenwich is one political and taxing body, but consists of several distinct sections or neighborhoods, such as Banksville, Byram, Cos Cob, Glenville, Mianus, Old Greenwich, Riverside and…
From Wikipedia, licensed CC BY-SA 4.0 · facts via Wikidata (CC0)
- Area
- 2.2 sq mi
- ZIP code
- 06807
- Area code
- 203
Cos Cob’s neighbors
2 towns share a border with Cos Cob.
RiversideIndian FieldCos Cob
How the neighbors grade
| Town | CT rank | Overall | Cost | Safety | Schools | Health |
|---|---|---|---|---|---|---|
| Cos Cob | — | — | — | — | — | — |
| Riverside | — | — | — | — | — | — |
| Indian Field | — | — | — | — | — | — |
Cos Cob, Riverside and Indian Field aren’t graded (fewer than 1,000 residents, or not enough data). Compare Cos Cob with a neighbor →
Questions about Cos Cob
Short answers, built from the data on this page.
Is Cos Cob, CT a good place to live?
We don’t grade Cos Cob yet; the figures below are still real.
What is Cos Cob, CT known for?
2 notable people were born here, including Sean Backman and Anne W. Simon.