Cos Cob, CT
Full City Profile · Connecticut · Westchester County County
4.1
/5.0
A
Great
7,354
Population
3,420/sq mi density
$176,602
Median Income
$99,232 per capita
$1,149,500
Home Value
$2,195,451 Zillow
$2,574
Median Rent
34.1% income on rent
52°F
Avg Temperature
A
Overall
4.1 / 5.0
Strong
A
Economy
4.4 / 5.0
$176,602 median income, 6.1% unemployment
C+
Affordability
3.0 / 5.0
$1,149,500 home value, $2,574/mo rent
A+
Education
5.0 / 5.0
70.3% bachelor's degree or higher
Change Over Time (2013, 2023)
Population Change
+15.9%
6,346 → 7,354
over 10 years
Annual Pop. Growth
+1.49%
Compound annual growth rate
Median Income Change
+30.2%
$135,670 → $176,602
nominal, not inflation-adjusted
Annual Income Growth
+2.67%
Compound annual growth rate
Population Over Time
Total population for Cos Cob across each available Census ACS release.
Median Household Income Over Time
Median household income reported by U.S. Census ACS. Values are nominal (not adjusted for inflation).
Projected 2030
Simple projections extrapolating the 2013, 2023 compound annual growth rate forward. These are mathematical extensions of recent trends, not forecasts, real outcomes depend on migration, policy and economic shifts.
Projected Population 2030
8,156
+802 from 2023 (7,354)
Projected Median Income 2030
$212,374
+$35,772 from 2023 ($176,602)
Year-by-Year Detail
| Year | Population | YoY % | Median Income | YoY % |
|---|---|---|---|---|
| 2013 | 6,346 | - | $135,670 | - |
| 2015 | 6,433 | +1.4% | $142,500 | +5% |
| 2017 | 6,840 | +6.3% | $135,417 | -5% |
| 2019 | 6,990 | +2.2% | $149,375 | +10.3% |
| 2021 | 7,089 | +1.4% | $138,125 | -7.5% |
| 2023 | 7,354 | +3.7% | $176,602 | +27.9% |
Source: U.S. Census ACS 5-Year Estimates (Data Commons). Home value and rent are not yet available historically.