Find the last 4 digits (ZIP+4) for an address in 06820

ZIP 06820, Darien, CT is filled in. Just type the street address.

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ZIP Code 06820 – Darien, CT

Darien, Connecticut · Western Connecticut Planning Region · Eastern time

ZIP code06820
CityDarien
StateConnecticut
CountyWestern Connecticut Planning Region
Population21,936
Time zoneEastern · local time
ZIP typeStandard (has a Census ZCTA area)
Land area12.65 sq mi
Center (lat, long)41.0762, -73.4801

Area codes in this area

203475

These are the area codes that most often serve ZIP 06820 (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.

Map

Nearby ZIP codes

06906 Stamford · 2.2 mi06853 Norwalk · 2.3 mi06922 Stamford · 2.5 mi06907 Stamford · 2.7 mi06854 Norwalk · 2.9 mi06905 Stamford · 3.4 mi06901 Stamford · 3.4 mi06904 Stamford · 3.4 mi

About ZIP 06820

ZIP code 06820 is assigned to Darien, Connecticut. It lies in Western Connecticut Planning Region. Its Census area covers about 12.65 square miles of land. The closest neighboring ZIP is 06906 (Stamford), about 2.2 miles away.

Every address in 06820 also has a 4-digit add-on code (ZIP+4) that points to a smaller delivery area. Use the box above to find it.

Sources: US Census Bureau (ZCTA, county relationship files), GeoNames (CC BY 4.0), NANPA via NumberResearch.org (CC BY 4.0). Map © OpenStreetMap contributors. ZIP areas are approximate. Population: U.S. Census Bureau, ACS 5-year estimates, 2024 (ZCTA). Data sources