ZIP Code 06820

ZIP code 06820 is classified by USPS as a standard delivery area and covers roughly 32.8 square miles in Darien, Fairfield County, Connecticut. The area is home to 20,732 residents, producing a population density of 633 people per square mile, and falls within the New York time zone. These USPS and Census boundary values drive every downstream statistic on this page, including the benchmarks that compare 06820 against Connecticut and the nation.

On the economic side, the median household income for ZIP 06820 sits at $250,001 (121% above the Connecticut average), while per-capita income is $152,454. The poverty rate stands at 5.8% and the unemployment rate at 5.1%. On housing, the median home value is $1,822,400 (320% above the state average) with median rent at $3,501 per month, and 82.4% of occupied units are owner-occupied, a direct signal of whether 06820 behaves more like a homeowner neighborhood or a renter-heavy ZIP.

Education and household profile round out the picture: 85.9% of adults hold a bachelor's degree or higher, the median age is 40, and the average commute is 39 minutes. We also surface 10 nearby ZIP codes within roughly 10 miles and 6 additional ZIPs sharing Fairfield County, so you can benchmark 06820 against its immediate geography rather than a national average alone. Every figure is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates, HUD Fair Market Rents, and FHFA Home Price Index data, no estimates, no proprietary scoring. Verify with HUD →