Old Greenwich CDP, Connecticut Demographics & Population 2026

Population Overview

Old Greenwich CDP is a small city located in Connecticut. The total population is 6,904. It ranks as the 53rd most populous out of 215 cities and towns in Connecticut.

Age Demographics

The median age in Old Greenwich CDP is 40.5 years. This is 2% lower than the state median of 41.2 years. With 33.3% of the population under 18, Old Greenwich CDP has a notably young demographic profile, suggesting a family-oriented community.

Economy, Income & Housing

The median household income in Old Greenwich CDP is $250,001. This is 167% higher than the state median of $93,760. Compared to the national median of $78,538, household income here is 218% higher. The poverty rate stands at 3.4%. This is 67% lower than the state poverty rate of 10.0%. This exceptionally low poverty rate indicates strong economic prosperity across the community. The unemployment rate is 4.7%. This is 18% lower than the state rate of 5.7%. The median home value is $1,668,200. Housing costs are 386% higher than the state median of $343,200. The home-value-to-income ratio of 6.7x suggests that housing affordability is a significant concern for many residents. 85.4% of occupied housing units are owner-occupied. This homeownership rate is 29% higher than the state average of 66.2%.

Race & Ethnicity

The largest racial or ethnic group in Old Greenwich CDP is White (non-Hispanic), making up 77.5% of the population. Asian residents account for 8.4%. The Black or African American population (0.5%) is well below the state average of 9.9%. The Hispanic or Latino population (7.6%) is well below the state average of 17.8%. The Asian population is significantly higher than the state average (8.4% vs 4.7%).

Education

84.3% of residents aged 25 and older hold a bachelor's degree or higher. This places Old Greenwich CDP in the top 10% of all cities in the state for educational attainment. This is 101% higher than the state rate of 41.9%. Nationally, 35.0% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 98.8%. Notably, 40.6% of adults hold a graduate or professional degree, indicating a highly educated workforce.

Data Sources & Methodology

All demographic data for Old Greenwich CDP, Connecticut is sourced from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates (2019-2023). The ACS collects data from approximately 3.5 million households annually, providing reliable estimates for communities of all sizes. Comparisons are made against Connecticut state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 215 Census-designated places in Connecticut. For official data, visit data.census.gov.