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Zip Code 06371 — Old Lyme, CT

06371 is a ZIP Code associated with Old Lyme, CT, located within Lower Connecticut River Valley. The postal region supports an estimated population of 9,828 residents across Data Pending housing units, with a population density of 70.3 people per square mile.

WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (41.363610, -72.325820)

Data Metric	Local Statistic
Postal / Zip Code	06371
Primary City	Old Lyme
State / Province	CT
County	Lower Connecticut River Valley
Total Population	9,828
Median Household Income	Data Pending
Total Housing Units	Data Pending
Population Density	70.3 people/sq mi
Timezone	America/New_York

How 06371 Compares

Metric	ZIP 06371	Lower Connecticut River Valley County	CT State Average
Population	9,828	175,346	3,624,508
Median Income	Data Pending	N/A	N/A
Population Density	70.3 /sq mi	--	--

Nearby ZIP Codes

ZIP Code	City	Distance	Population	Median Income
Zip 06426	Essex	3.8 mi	3,267	N/A
Zip 06333	East Lyme	4.5 mi	7,389	N/A
Zip 06409	Centerbrook	5.0 mi	701	N/A
Zip 06439	Hadlyme	5.3 mi	65	N/A
Zip 06475	Old Saybrook	5.3 mi	10,575	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 →