ZIP Code 11742: Holtsville, NY
County: Suffolk
Coordinates: 40.81050, -73.04160
ZIP Type: Standard
Time Zone: Eastern Time (ET)
Get a reliable snapshot of the Holtsville, NY postal area 11742. This page summarizes county, coordinates, and local facts to help with services and location research.
| Primary City | Holtsville |
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| ZIP Code | 11742 |
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| County | Suffolk |
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| State | NY |
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| Latitude / Longitude | 40.81050, -73.04160 |
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| ZIP Type | Standard |
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| Time Zone | Eastern Time (ET) |
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| Data Updated | 2026-01-08 |
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Maps & Useful Links
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These links show the approximate center point for ZIP 11742 (not an exact boundary).
Geographic & Administrative Context
For mapping and verification, 11742 is commonly represented around 40.81050, -73.04160. These coordinates help identify the general area within Suffolk, NY.
Local Coverage Notes
ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 11742 for mail delivery and general location reference in
Suffolk,
NY.
Coverage may include nearby neighborhoods and adjacent unincorporated areas commonly associated with Holtsville.
Related ZIP Codes (Nearby)
Explore other postal codes near Holtsville within NY.
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Frequently Asked Questions
What is the primary city for ZIP code 11742?
The primary city for this ZIP code is Holtsville, located in NY.
In which county is 11742 located?
ZIP code 11742 is situated within Suffolk, NY.
What are the coordinates for 11742?
The approximate center point is 40.81050 (Latitude) and -73.04160 (Longitude).
Is ZIP code 11742 active?
This page lists ZIP 11742 as Listed based on the latest refresh date shown above.
Does ZIP 11742 cover multiple areas?
Yes. Many ZIP codes cover multiple neighborhoods or nearby areas. For exact boundaries, use official mapping tools.
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Methodology & Data Notes
How we build this page: We generate this page from a structured ZIP dataset and refresh key fields (city, county, and coordinates) during scheduled updates. Coordinates represent an approximate center point, not an official boundary map.
Sources: Public ZIP reference datasets and geographic coordinate references. If you use specific sources (e.g., USPS, Census), list them on your About/Methodology page.
Page updated: 2026-01-08