Greenwich Connecticut ZIP Codes

Greenwich holds 3 ZIP codes, all inside one planning region and one postal prefix.

Every ZIP code in Greenwich

The complete list of Greenwich, Connecticut ZIP codes with the planning region each falls in.
ZIP code	Planning region
06830	Western Connecticut Planning Region
06831	Western Connecticut Planning Region
06836	Western Connecticut Planning Region

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP. USPS delivery-type products are licensed, and no clean-rights source maps ZIP codes to neighbourhoods — so the Greenwich codes above are listed without a column we would have to invent.

Scope every ZIP code recorded for Greenwich. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated 15 July 2026. ZIP codes are delivery-route groupings, not areas; the boundaries implied by any ZIP map are approximations.

How these codes cluster

Every Greenwich ZIP code begins 068. Those first three digits identify the sectional center facility that processes mail for this part of Connecticut. Statewide that range covers 44 ZIP codes, so Greenwich accounts for 7% of it.

Every Connecticut ZIP prefix and the region it covers →

Area codes covering Greenwich

ZIP codes and area codes are separate systems — one routes mail, the other routes calls — and they do not share boundaries. The codes below serve the same ground Greenwich occupies.

Greenwich Connecticut area codes in full →

Where Greenwich's ZIP codes sit

Each point is one Greenwich ZIP code, plotted from its record coordinates. The outline is the convex envelope of those points — a footprint, not a boundary.

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

Cities near Greenwich

The closest places to Greenwich with their own ZIP code list, nearest first.
City	Distance	ZIP codes
Stamford Connecticut ZIP codes	5.5 mi	17 ZIP codes
Darien Connecticut ZIP codes	8.1 mi	1 ZIP code
Norwalk Connecticut ZIP codes	12 mi	10 ZIP codes
Ridgefield Connecticut ZIP codes	18 mi	2 ZIP codes
Southport Connecticut ZIP codes	19 mi	1 ZIP code
Redding Connecticut ZIP codes	21 mi	1 ZIP code
Fairfield Connecticut ZIP codes	22 mi	3 ZIP codes
Bridgeport Connecticut ZIP codes	25 mi	10 ZIP codes

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