In which county is ZIP code 11777 located?

ZIP 11777 is listed under Suffolk, NY.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 11777: Port Jefferson, NY

ZIP: 11777

County: Suffolk

Coordinates: 40.94570, -73.06110

ZIP Type: Standard

Time Zone: Eastern Time (ET)

Get a reliable snapshot of the Port Jefferson, NY postal area 11777. This page summarizes county, coordinates, and local facts to help with services and location research.

Primary City	Port Jefferson
ZIP Code	11777
County	Suffolk
State	NY
Latitude / Longitude	40.94570, -73.06110
ZIP Type	Standard
Time Zone	Eastern Time (ET)
Data Updated	2026-01-08

Maps & Useful Links

Open in Maps: Google Maps · OpenStreetMap

These links show the approximate center point for ZIP 11777 (not an exact boundary).

Geographic & Administrative Context

The geographic center of ZIP code 11777 is approximately 40.94570 (latitude) and -73.06110 (longitude). This location sits within Suffolk, contributing to regional planning across NY.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 11777 for mail delivery and general location reference in Suffolk, NY.

Some addresses near Port Jefferson may share this ZIP due to delivery routing and local service areas.

Related ZIP Codes (Nearby)

Explore other postal codes near Port Jefferson within NY.

Frequently Asked Questions

What is the primary city for ZIP code 11777?

The primary city for this ZIP code is Port Jefferson, located in NY.

In which county is 11777 located?

ZIP code 11777 is situated within Suffolk, NY.

What are the coordinates for 11777?

The approximate center point is 40.94570 (Latitude) and -73.06110 (Longitude).

Is ZIP code 11777 active?

This page lists ZIP 11777 as Listed based on the latest refresh date shown above.

Does ZIP 11777 cover multiple areas?

Yes. Many ZIP codes cover multiple neighborhoods or nearby areas. For exact boundaries, use official mapping tools.

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