How many homes in Cos Cob, CT are overcrowded?

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

0.5% (±1.7 points) of occupied homes in Cos Cob, CT have more than one occupant per room (2020–2024 American Community Survey).

0.0% have more than 1.5.

1.8% lack complete plumbing.

1.5% lack a complete kitchen.

Figures last updated on November 12, 2026.

More than 1 per room: 0.5% (±1.7 points)
Lacking plumbing: 1.8%
Lacking a kitchen: 1.5%

Crowding and facilities in Cos Cob

Share of occupied homes, estimate (90% margin of error)
	Cos Cob	Western Connecticut Planning Region	Connecticut	United States
More than 1 person per room	0.5% (±1.7 points)	2.7% (±0.4 points)	2.1% (±0.1 points)	3.4%
More than 1.5 people per room	0.0% (±1.5 points)	1.0% (±0.2 points)	0.7% (±0.1 points)	1.2%
Lacking complete plumbing	1.8% (±2.4 points)	0.3% (±0.1 points)	0.4% (±0.1 points)	0.4%
Lacking a complete kitchen	1.5% (±2.2 points)	0.6% (±0.1 points)	0.7% (±0.1 points)	0.8%

A room is any whole room other than a bathroom, hall or porch; more than one person per room is the Census Bureau’s usual measure of crowding.

Complete plumbing means hot and cold running water and a bath or shower; a complete kitchen means a sink with a faucet, a stove or range and a refrigerator.

In Cos Cob, the share of crowded homes is lower than in Western Connecticut Planning Region (2.7%).

It is not measurably different from Connecticut (2.1%).

It is lower than the national figure (3.4%).

Crowded homes in places near Cos Cob

Nearest places with a published estimate, compared with Cos Cob
Place	Distance	Crowded homes	Compared with this place
Cos Cob	—	0.5% (±1.7 points)	—
Riverside	1.3 mi	3.1% (±1.7 points)	Higher
Greenwich (community)	2.3 mi	1.5% (±1.2 points)	Not measurably different
Old Greenwich	2.3 mi	0.0% (±2.5 points)	Not measurably different
Stamford	3.2 mi	5.0% (±0.9 points)	Higher
Glenville	3.9 mi	1.7% (±5.3 points)	Not measurably different
Pemberwick	4.0 mi	0.7% (±3.3 points)	Not measurably different
Byram	4.6 mi	0.8% (±2.8 points)	Not measurably different
Village of Port Chester	5.0 mi	8.0% (±2.8 points)	Higher

Nearby places with a measurably higher figure: Riverside, CT (3.1%), Stamford, CT (5.0%), Village of Port Chester, NY (8.0%).

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

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).

Margins of error are at the 90% confidence level.

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Questions about Cos Cob

How many homes in Cos Cob are overcrowded?

0.5% of occupied homes in Cos Cob, CT have more than one person per room (2020–2024 American Community Survey).

How many homes in Cos Cob lack plumbing or a kitchen?

1.8% lack complete plumbing facilities and 1.5% lack complete kitchen facilities.

Sources

Selected Housing Characteristics (DP04), 2020–2024 ACS 5-year estimates — Cos Cob CDP, Connecticut

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 API needs a free key.

Request a Census API key.

DP04_0078PE, DP04_0078PM, DP04_0079PE, DP04_0079PM, DP04_0073PE, DP04_0073PM, DP04_0074PE, DP04_0074PM

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.