ZIP Code 06820

06820 is one of Connecticut's ZIP codes, delivering to addresses in Darien, Western Connecticut Planning Region.

City: Darien
Planning region: Western Connecticut Planning Region
State: Connecticut
Prefix: 068xx

Where this code sits

06820 is part of the 068xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Darien.

Darien Connecticut ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 06820 delivers to without sharing its boundary.

ZIP codes nearest 06820

The ZIP codes whose reference points sit closest to 06820.
ZIP code	Distance	Delivers to
ZIP code 06906	2.1 mi	Stamford, CT
ZIP code 06907	2.2 mi	Stamford, CT
ZIP code 06922	2.3 mi	Stamford, CT
ZIP code 06853	2.4 mi	Norwalk, CT
ZIP code 06905	3.1 mi	Stamford, CT
ZIP code 06904	3.2 mi	Stamford, CT
ZIP code 06911	3.2 mi	Stamford, CT
ZIP code 06912	3.2 mi	Stamford, CT

Straight-line distance between place reference points, not driving distance. Where a place has no Census Gazetteer point, its postal centroid is used instead.

Each point is the reference point for 06820, plotted from its record coordinates.

Reference points and footprint
Not an official NANPA boundary
Not a USPS delivery area

Scope ZIP code 06820. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated 15 July 2026. A ZIP code is a set of delivery routes, not an area; the point shown is a record coordinate, not a centre.