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  2. What is the zip code of Holtsville, NY, 11742

Holtsville (NY) Zip Code is 11742 Latest Details Nov, 2025

Updated: 16-11-2025

Holtsville (NY) zip Code is 11742, Postal Code details. Holtsville is located in state NY, United States.

Find Zip Code 11742 Details

ZIP code 11742 is located in Holtsville NY in the United States.

Postal Code United States Zip Code 11742 Latest update Holtsville, NY
Zip Code / Postal Code 11742

City

Holtsville

State Code

NY

County

Suffolk, United States

Postal Locations

Holtsville, NY - Zip Code is - 11742

Postal

United States Postal Service USPS Link

Delivery Type

Package Delivery and first class mail.

The zip code 11742 is an essential part of the postal system in Holtsville, NY. Located in a vibrant part of the city, this zip code covers a variety of neighborhoods, offering residents and businesses a unique blend of suburban comfort and urban convenience. Whether you're looking to send mail, relocate, or simply learn more about the area, Holtsville has a lot to offer.

FAQ about Zip Code 11742, Holtsville, (NY)

What is Zip code Holtsville?

Holtsville Zip Code: 11742, used by the Holtsville Post Office and USPS, is a Zone Improvement Plan code that ensures faster, accurate mail delivery in Suffolk, NY. Represented by the American Postal Workers Union (APWU), USPS oversees postal operations.

What is Postal code of area Holtsville?

Holtsville Postal Code is: 11742

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