Old Lyme ZIP Codes

List of Zip Codes of Old Lyme

The following table lists ZIP Codes associated with Old Lyme, Connecticut, based on ZIP Code Tabulation Area (ZCTA) data from the U.S. Census Bureau.

About Old Lyme Connecticut Zip Codes

The city of Old Lyme in Connecticut (CT) is served by approximately 1 ZIP Codes. These codes cover residential neighborhoods, business districts, and surrounding localities that use the city name in their mailing address.

Based on ZIP-level population estimates, the combined population covered by these ZIP Codes is around 9,855 people. Population density can vary significantly from one ZIP Code to another, reflecting the mix of dense urban blocks, commercial corridors, and lower-density residential areas.

The ZIP Codes associated with Old Lyme fall within county jurisdictions such as Lower Connecticut River Valley. Each county manages local services, land use, and administration for the areas corresponding to its ZIP Codes.

Most ZIP codes for Old Lyme, Connecticut follow the America/New_York time zone.