ZIP code · Holtsville · New York · United States

ZIP code 11742 — Holtsville

Name: Holtsville (11742)
Address: New York, 11742, US

ZIP code 11742 serves Holtsville, New York.

Postal code: 11742
Single source Value from one source, not cross-checked.
City: Holtsville
County: Suffolk
State: New York
Country: United States
Coordinates: 40.8105, -73.0416 — precision precise (locality)
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Nearby localities

00501Holtsville
00544Holtsville

About this page

US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.

GeoNames. Data generated on 2026-08-21. Methodology · Report an error on this page