In which county is ZIP code 12123 located?

ZIP 12123 is listed under Rensselaer, NY.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 12123: Nassau, NY

ZIP: 12123

County: Rensselaer

Coordinates: 42.52710, -73.61180

ZIP Type: Standard

Time Zone: Eastern Time (ET)

Get a reliable snapshot of the Nassau, NY postal area 12123. This page summarizes county, coordinates, and local facts to help with services and location research.

Primary City	Nassau
ZIP Code	12123
County	Rensselaer
State	NY
Latitude / Longitude	42.52710, -73.61180
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 12123 (not an exact boundary).

Geographic & Administrative Context

For mapping and verification, 12123 is commonly represented around 42.52710, -73.61180. These coordinates help identify the general area within Rensselaer, NY.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 12123 for mail delivery and general location reference in Rensselaer, NY.

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

Related ZIP Codes (Nearby)

Explore other postal codes near Nassau within NY.

Frequently Asked Questions

What is the primary city for ZIP code 12123?

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

In which county is 12123 located?

ZIP code 12123 is situated within Rensselaer, NY.

What are the coordinates for 12123?

The approximate center point is 42.52710 (Latitude) and -73.61180 (Longitude).

Is ZIP code 12123 active?

This page lists ZIP 12123 as Listed based on the latest refresh date shown above.

Does ZIP 12123 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