What is the median home value in Cos Cob, CT?

Name: Home values in Cos Cob, CT, 2020–2024
Creator: US Census Bureau
License: https://www.census.gov/data/developers/about/terms-of-service.html

The median value of owner-occupied homes in Cos Cob, CT is $1,210,400 (±$136,068), as owners estimated it in the Census Bureau’s 2020–2024 American Community Survey.

In Cos Cob, the median home value went from $1,055,400 in 2015–2019 to $1,210,400 in 2020–2024 (+14.7%).

Prices (CPI-U) rose 22.7% over the same years; the change is not measurably different from the rise in prices.

Figures last updated on November 12, 2026.

Median home value: $1,210,400 (±$136,068)
Owner-occupied homes: 1,833 (±272)
Most common range: $1,000,000 or more

Home values in Cos Cob

Owner-occupied homes by value, 2020–2024
Value	Cos Cob	Western Connecticut Planning Region	Connecticut	United States
Less than $50,000	0.4% (±0.7 points)	1.2%	2.4%	5.3%
$50,000 to $99,999	0.3% (±0.6 points)	0.6%	1.5%	6.1%
$100,000 to $149,999	0.0% (±2.3 points)	0.8%	3.3%	6.8%
$150,000 to $199,999	1.3% (±2.2 points)	1.5%	6.9%	9.0%
$200,000 to $299,999	0.4% (±0.6 points)	6.2%	21.5%	17.8%
$300,000 to $499,999	2.2% (±2.2 points)	25.4%	36.8%	26.9%
$500,000 to $999,999	27.8% (±9.2 points)	37.3%	20.8%	20.9%
$1,000,000 or more	67.5% (±9.0 points)	27.1%	6.8%	7.1%

The most common range is $1,000,000 or more, 67.5% of owned homes.

Value is the owner’s own estimate of what the home and lot would sell for, not a sale price or an assessment.

Cos Cob against Western Connecticut Planning Region, its state and the nation

Estimate (90% margin of error)
	Cos Cob	Western Connecticut Planning Region	Connecticut	United States
Median home value	$1,210,400 (±$136,068)	$652,900 (±$8,528)	$366,900 (±$1,621)	$332,700
Owner-occupied homes	1,833 (±272)	156,319 (±1,727)	952,989 (±5,585)	84,210,142

In Cos Cob, the median home value is higher than in Western Connecticut Planning Region ($652,900).

It is also higher than in Connecticut ($366,900).

It is higher than the national figure ($332,700).

In Western Connecticut Planning Region, Cos Cob ranks 13 of 33 places with a published estimate, from highest to lowest median home value.

Statewide, it ranks 13 of 131.

Rankings use the estimates alone; where margins of error overlap, neighboring ranks may not truly differ.

How home values in Cos Cob have changed since 2015–2019

2015–2019 and 2020–2024 American Community Survey 5-year estimates
	2015–2019	2020–2024	Amount of change	Verdict
Median home value	$1,055,400 (±$61,052)	$1,210,400 (±$136,068)	+14.7%	No measurable change after inflation
Median real estate taxes	$7,984 (±$630)	$8,168 (±$752)	+2.3%	Down after inflation

The Census Bureau publishes 2015–2019 dollars in 2019 dollars and 2020–2024 dollars in 2024 dollars.

Prices (the CPI-U, US Bureau of Labor Statistics) rose 22.7% between 2019 and 2024, so a dollar figure’s verdict compares the two after raising the earlier one by that much, using the Census Bureau’s test for a difference.

The two periods do not overlap, as the Census Bureau recommends for 5-year estimates.

Median home value in places near Cos Cob

Nearest places with a published estimate, compared with Cos Cob
Place	Distance	Median home value	Compared with this place
Cos Cob	—	$1,210,400 (±$136,068)	—
Riverside	1.3 mi	$1,900,300 (±$150,986)	Higher
Greenwich (community)	2.3 mi	$1,515,700 (±$235,390)	Higher
Old Greenwich	2.3 mi	$1,844,700 (±$189,542)	Higher
Stamford	3.2 mi	$624,400 (±$12,302)	Lower
Glenville	3.9 mi	$1,148,600 (±$60,210)	Not measurably different
Pemberwick	4.0 mi	$940,200 (±$67,174)	Lower
Byram	4.6 mi	$838,400 (±$89,829)	Lower
Village of Port Chester	5.0 mi	$582,600 (±$25,657)	Lower

Nearby places with a measurably lower figure: Stamford, CT ($624,400), Pemberwick, CT ($940,200), Byram, CT ($838,400).

Nearby places with a measurably higher figure: Riverside, CT ($1,900,300), Greenwich (community), CT ($1,515,700), Old Greenwich, CT ($1,844,700).

Distance is measured in a straight line between the Census Bureau’s internal points for each place.

Median home value across Western Connecticut Planning Region, place by place

Rank	Place	Median home value
7	Coleytown	$1,589,700 (±$164,115)
8	Compo	$1,522,500 (±$304,442)
9	Greenwich (community)	$1,515,700 (±$235,390)
10	Old Hill	$1,479,400 (±$326,496)
11	Greens Farms	$1,314,700 (±$324,982)
12	Noroton Heights	$1,225,400 (±$130,042)
13	Cos Cob	$1,210,400 (±$136,068)
14	Poplar Plains	$1,207,700 (±$263,801)
15	Staples	$1,165,500 (±$63,987)
16	Glenville	$1,148,600 (±$60,210)
17	New Canaan (community)	$1,099,400 (±$131,155)
18	Pemberwick	$940,200 (±$67,174)
19	Darien Downtown	$915,400 (±$199,677)

Showing 13 of 33 places in Western Connecticut Planning Region, ranked from highest to lowest.

Cos Cob is a census-designated place: an unincorporated community the Census Bureau draws for statistics, with no municipal government of its own.

It lies inside Greenwich, whose figures include it.

Survey years: 2020–2024 (American Community Survey 5-year estimates), compared with 2015–2019.

Margins of error are at the 90% confidence level.

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Questions about Cos Cob

What is the average home value in Cos Cob, CT?

The Census Bureau publishes the median: $1,210,400 (±$136,068) for owner-occupied homes in Cos Cob (2020–2024 American Community Survey).

Have home values in Cos Cob gone up?

In Cos Cob, the median home value went from $1,055,400 in 2015–2019 to $1,210,400 in 2020–2024 (+14.7%).

Prices (CPI-U) rose 22.7% over the same years; the change is not measurably different from the rise in prices.

Is this what homes in Cos Cob sell for?

No: it is the value owners reported, which tends to lag the market; recent sale prices and an appraisal answer that question.

Sources

To check these figures in the Census Bureau’s own API, request the variables below from the 2024 ACS 5-year data profile (acs/acs5/profile) for Cos Cob CDP, Connecticut (place:17520, in state:09).

Each estimate (E or PE) has a margin of error beside it (M or PM).

The 2015–2019 figures are B25077_001E, B25077_001M, B25088_002E, B25088_002M, B25103_001E, B25103_001M from the 2019 release.

The API needs a free key.

Request a Census API key.

DP04_0089E, DP04_0089M, DP04_0046E, DP04_0046M, DP04_0081PE, DP04_0081PM, DP04_0082PE, DP04_0082PM, DP04_0083PE, DP04_0083PM, DP04_0084PE, DP04_0084PM, DP04_0085PE, DP04_0085PM, DP04_0086PE, DP04_0086PM, DP04_0087PE, DP04_0087PM, DP04_0088PE, DP04_0088PM

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.

Figures are published by the US Census Bureau, HUD, the Bureau of Labor Statistics and the FBI; Seayora reproduces them and does not adjust them, except where a sentence says it compares dollar figures after inflation. They describe the whole place, not any one building or street, and are not an appraisal, a rent determination, a tax bill, a safety rating or legal advice.