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Zip Code 06378 — Stonington, CT

06378 is a ZIP Code associated with Stonington, CT, located within Southeastern Connecticut. The postal region supports an estimated population of 5,555 residents across Data Pending housing units, with a population density of 102.6 people per square mile.

WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (41.380390, -71.913760)

Data Metric	Local Statistic
Postal / Zip Code	06378
Primary City	Stonington
State / Province	CT
County	Southeastern Connecticut
Total Population	5,555
Median Household Income	Data Pending
Total Housing Units	Data Pending
Population Density	102.6 people/sq mi
Timezone	America/New_York

How 06378 Compares

Metric	ZIP 06378	Southeastern Connecticut County	CT State Average
Population	5,555	281,371	3,624,508
Median Income	Data Pending	N/A	N/A
Population Density	102.6 /sq mi	--	--

Nearby ZIP Codes

ZIP Code	City	Distance	Population	Median Income
Zip 06379	Pawcatuck	3.0 mi	9,017	N/A
Zip 06355	Mystic	3.2 mi	12,173	N/A
Zip 06339	Ledyard	6.2 mi	9,113	N/A
Zip 06359	North Stonington	6.5 mi	5,160	N/A
Zip 06338	Mashantucket	6.6 mi	27	N/A

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →