City profile · Connecticut · Census ACS 2023

Cos Cob, CT

Population, income, housing, safety, climate and schools for Cos Cob - drawn straight from Census ACS, FBI UCR, NOAA, NCES, HUD and FEMA, refreshed on the 2024–2025 release cycle.

7,354
Residents
$176,602
Median income
$1,149,500
Median home
$2,511
Median rent (state)

Cos Cob - the verdict

Cos Cob ranks in the 97th percentile for household income nationally, out of every US city with at least 1,000 residents. Source: Census ACS.

97th
percentile, household income
98th
percentile, home value
92nd
percentile, median rent
📝 How we sourced this

Population, income, and housing-cost figures come from the U.S. Census Bureau American Community Survey 5-year estimates (B-series tables). Crime data uses FBI UCR; climate uses NOAA Climate Normals; school counts come from NCES Common Core of Data; permits use the Census Building Permits Survey (BPS). See our methodology page for the full ETL pipeline and OMB / FIPS join keys.

Data Snapshot: Cos Cob, CT

7,354 people live in Cos Cob, Connecticut - a small town by U.S. Census Bureau ACS 2023 estimates. The typical household in Cos Cob brings in $176,602 a year, placing it in the top quartile of U.S. cities for household income, with a poverty rate of 2.8%. Cos Cob's housing stock carries a median value of $1,149,500, and the median resident age is 39.3 years. 70.3% of adults here have a bachelor's degree or higher; 67.9% of working-age residents are in the labor force.

The city is served by 1 public schools according to NCES Common Core of Data.

Connecticut carries a cost-of-living premium: the state registers 103.6 on a 100-equals-national-average index (Above Average) per BEA Regional Price Parities 2024. Statewide, HUD pegs Fair Market Rent for a two-bedroom unit at $2,511 monthly. Monthly utility costs average around $345 across Connecticut, per EIA 2023 residential energy estimates. Natural-hazard exposure scores 96.3 out of 100 on FEMA's National Risk Index (Very High).

Population

7,354 residents

Census ACS 2023 - Connecticut

Median Household Income

$176,602 /yr

Poverty 2.8%

Cost of Living Index (state)

103.6 (US=100)

Above Average - BEA RPP 2024, Connecticut average

How does Cos Cob compare to other US cities?

Cos Cob measured against every US city with 1,000+ residents, computed live from the same Census and FBI data shown throughout this page.

Household income 97% higher than other cities
Home value 98% pricier than other cities
Median rent 92% pricier than other cities

"Safer than" reflects total crime rate from FBI UCR; the others use Census ACS estimates.

How we calculate these percentiles & ranks

For each metric we count every US city with population 1,000+ and a non-null value, then compute what share of them fall below Cos Cob's value: round(cities-below ÷ total × 100). Safety is inverted (percentile = share of cities with a higher crime rate) so a higher number always means safer. The in-state rank narrows that same crime-rate comparison to only the cities PlainCities tracks in Connecticut, breaking ties alphabetically. See the methodology page for the full source-to-figure lineage.

97thIncome percentile

97th percentile nationally for median household income. Source: Census ACS 2023 / FBI UCR 2023.

How Cos Cob's home value compares nationally

Median home value vs. every US city (population 1,000+)

$1,149,500 2nd percentile more affordable than 2% of 15,600 US cities

$0–$25,000: 5 US cities (0%). Below this entry. $25,000–$50,000: 54 US cities (0%). Below this entry. $50,000–$75,000: 352 US cities (2%). Below this entry. $75,000–$100,000: 1,086 US cities (7%). Below this entry. $100,000–$125,000: 1,516 US cities (10%). Below this entry. $125,000–$150,000: 1,170 US cities (8%). Below this entry. $150,000–$175,000: 1,278 US cities (8%). Below this entry. $175,000–$200,000: 1,229 US cities (8%). Below this entry. $200,000–$225,000: 1,035 US cities (7%). Below this entry. $225,000–$250,000: 976 US cities (6%). Below this entry. $250,000–$275,000: 754 US cities (5%). Below this entry. $275,000–$300,000: 712 US cities (5%). Below this entry. $300,000–$325,000: 521 US cities (3%). Below this entry. $325,000–$350,000: 526 US cities (3%). Below this entry. $350,000–$375,000: 465 US cities (3%). Below this entry. $375,000–$400,000: 393 US cities (3%). Below this entry. $400,000–$425,000: 317 US cities (2%). Below this entry. $425,000–$450,000: 300 US cities (2%). Below this entry. $450,000–$475,000: 307 US cities (2%). Below this entry. $475,000–$500,000: 250 US cities (2%). Below this entry. $500,000–$525,000: 160 US cities (1%). Below this entry. $525,000–$550,000: 156 US cities (1%). Below this entry. $550,000–$575,000: 172 US cities (1%). Below this entry. $575,000–$600,000: 172 US cities (1%). Below this entry. $600,000–$625,000: 163 US cities (1%). Below this entry. $625,000–$650,000: 167 US cities (1%). Below this entry. $650,000–$675,000: 135 US cities (1%). Below this entry. $675,000–$700,000: 101 US cities (1%). Below this entry. $700,000–$725,000: 95 US cities (1%). Below this entry. $725,000–$750,000: 71 US cities (0%). Below this entry. $750,000–$775,000: 65 US cities (0%). Below this entry. $775,000–$800,000: 70 US cities (0%). Below this entry. $800,000–$825,000: 57 US cities (0%). Below this entry. $825,000–$850,000: 67 US cities (0%). Below this entry. $850,000–$875,000: 60 US cities (0%). Below this entry. $875,000–$900,000: 58 US cities (0%). Below this entry. $900,000–$925,000: 47 US cities (0%). Below this entry. $925,000–$950,000: 37 US cities (0%). Below this entry. $950,000–$975,000: 31 US cities (0%). Below this entry. $975,000–$1,000,000: 470 US cities (3%). Below this entry. $1,000,000–$1,025,000: 0 US cities (0%). This entry sits in this band. Cos Cob $0 $1,025,000 every US city, bucketed by value

Each bar is a $25K-wide band; taller bars hold more US cities. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source U.S. Census Bureau ACS 5-Year Estimates · 2023

Income distribution context

Household income distribution - Cos Cob, CT Cos Cob, CT's reported median household income shown against the U.S. national quintile-share pattern (not Cos Cob, CT-specific quintile data). The Lorenz curve traces the national cumulative income share against cumulative population share, perfect equality is the diagonal; observed inequality bows below. $ Household Income Distribution Cos Cob, CT median $176,602/yr, vs. U.S. national quintile pattern QUINTILE SHARE OF AGGREGATE INCOME Lowest 20% 3.4% Second 20% 9.2% Middle 20% 15.1% Fourth 20% 23.2% Top 20% 49.1% LORENZ CURVE cumulative income vs. population 100% 0% 100% pop. 0%
Cos Cob, CT's median household income (Census ACS 5-year estimate) plotted against the U.S. national income-quintile distribution pattern for context; the quintile shares and Lorenz curve are national figures, not computed specifically for Cos Cob, CT. Diagonal = perfect equality.

Key socioeconomic indicators

Bachelor's degree or higher (adults 25+) 70.3%

Census ACS S1501, educational attainment

Poverty rate (households below FPL) 2.8%

Census ACS S1701, poverty status

Labor force participation (adults 16+) 67.9%

Census ACS S2301, share of working-age residents in the labor force

Population
7,354
Median Income
$176,602
Median Home Value
$1,149,500
Median Age
39.3
Poverty Rate
2.8%
Labor force participation
67.9%
Bachelor's Degree+
70.3%

Schools

Total Schools
1
Public schools in this city

Commute Patterns

How workers travel to work, Census ACS 2023

Drive Alone
54.8%
Carpool
4.9%
Public Transit
9.0%
Walk
1.9%
Work from Home
27.9%
Other
1.5%

Based on 3,748 workers 16 and over.

Monthly Utility Costs

State-average estimates for Connecticut - EIA 2023 residential energy data

Electricity
$175
avg/month
Natural Gas
$110
avg/month
Water & Sewer
$60
avg/month
Total Utilities
$345
estimated/month

Estimates reflect Connecticut state averages. Actual costs vary by home size, usage, and local rates. Source: U.S. Energy Information Administration (EIA) 2023.

Living Costs & Risk

Cost of living is a Connecticut state average from BEA; rent and hazard risk are county-level figures from HUD and FEMA for the county Cos Cob sits in

Cost of Living Index
103.6
Above Average
US average = 100 · BEA RPP 2024
Typical 2-BR Rent
$2,511/mo
HUD Fair Market Rent
County-level FMR estimate
Natural Hazard Risk
96.3 / 100
Very High
FEMA NRI composite score (county)

Similar Cities in Connecticut

Thompsonville
7,473 people
Putnam
7,120 people
Ridgefield
7,103 people
New Milford
7,632 people
Winsted
7,074 people
New Canaan
7,032 people

Cities of a Similar Size Nationwide

Population-matched peers from other states, closest to Cos Cob's 7,354 residents (Census ACS 5-Year 2023).

Pea Ridge, AR
7,348 people
McCook, NE
7,360 people
Archbald, PA
7,348 people
King, NC
7,345 people
Bremen, GA
7,364 people
Bellbrook, OH
7,344 people

Cities with a Similar Household Income Nationwide

Median-household-income-matched peers from other states, closest to Cos Cob's $176,602 (Census ACS 5-Year 2023, table B19013).

Lake Quivira, KS
$176,607 median income
Franklin, MI
$176,571 median income
Fanwood, NJ
$176,667 median income
Maunawili, HI
$176,528 median income
Croom, MD
$176,758 median income
Dilworthtown, PA
$176,438 median income

Race & Ethnicity Composition

Race and ethnicity - Cos Cob, CT Race categories sum to one hundred percent per Census methodology. Hispanic or Latino is shown separately as an ethnicity overlay; it cuts across all race categories per OMB Directive 15. Race & Ethnicity Composition Cos Cob, CT - Census ACS, OMB race + ethnicity categories RACE, sums to 100% 71.9% 6.9% 12.6% ETHNICITY, Hispanic or Latino (any race) 14.2% White 71.9% Black or African American 2.9% Asian 5.4% American Indian 0.3% Native Hawaiian 0.0% Some other race 6.9% Two or more races 12.6% Per OMB Directive 15: Hispanic/Latino ethnicity is reported separately from the race categories.
Race categories sum to 100%. Hispanic or Latino ethnicity is reported separately and cuts across race per Census/OMB methodology.

City-level race and ethnicity, Census ACS 5-year 2023 (tables B02001, B03001), OMB Directive 15 categories.

How Cos Cob compares to nearby Connecticut cities

Population + median household income, sourced from Census Bureau ACS 5-year B01001 (population) and B19013 (median household income).

City Population Median Household Income
Cos Cob (this city) 7,354 $176,602
Thompsonville 7,473 $71,714
Putnam 7,120 $63,209
Ridgefield 7,103 $143,286
Census ACS 5-year FIPS CT NCES CCD OMB Bulletin 23-01

What do people ask about Cos Cob, CT?

What is the population of Cos Cob, CT? +

Cos Cob, CT counts 7,354 residents according to U.S. Census Bureau ACS 2023 estimates.

What is the median household income in Cos Cob, CT? +

Cos Cob households earn a median of $176,602 annually, based on Census ACS 2023 data.

What is the cost of living in Cos Cob? +

BEA does not publish a city-level cost-of-living figure for Cos Cob; the closest available measure is the Connecticut state average, a cost of living index of 103.6 (U.S. average = 100), rated "Above Average" based on BEA Regional Price Parities 2024 data. Costs within Connecticut vary by metro area.

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

The median home value in Cos Cob is $1,149,500, according to Census ACS 2023 estimates.

Source: U.S. Census Bureau ACS 5-Year 2023, NCES CCD, Census ACS B08301/B08136, U.S. Energy Information Administration (EIA) 2023, BEA Regional Price Parities 2024, HUD Fair Market Rents 2026, FEMA National Risk Index.

Read our methodology - how this data is sourced, computed, and verified.

Primary sources: Census ACS, FBI UCR, NOAA Climate Normals, NCES.

Citation & verification links Data sourced from the U.S. Census Bureau. See our methodology for details. Retrieved and formatted by PlainCities Editorial

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Every figure on PlainCities is rendered directly from Census ACS source data, no number is typed in by an editor. This page draws directly on Census ACS source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.