In which county is ZIP code 08821 located?

ZIP 08821 is listed under Somerset County, NJ.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 08821: Flagtown, NJ

ZIP: 08821

County: Somerset County

Coordinates: 40.51700, -74.68430

ZIP Type: Standard

Time Zone: Eastern Time (ET)

Get a reliable snapshot of the Flagtown, NJ postal area 08821. This page summarizes county, coordinates, and local facts to help with services and location research.

Primary City	Flagtown
ZIP Code	08821
County	Somerset County
State	NJ
Latitude / Longitude	40.51700, -74.68430
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 08821 (not an exact boundary).

Geographic & Administrative Context

Coordinates for 08821 are listed as 40.51700 / -74.68430, useful for GPS and service checks in and around Flagtown, NJ.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 08821 for mail delivery and general location reference in Somerset County, NJ.

Coverage may include nearby neighborhoods and adjacent unincorporated areas commonly associated with Flagtown.

Related ZIP Codes (Nearby)

Explore other postal codes near Flagtown within NJ.

Frequently Asked Questions

What is the primary city for ZIP code 08821?

The primary city for this ZIP code is Flagtown, located in NJ.

In which county is 08821 located?

ZIP code 08821 is situated within Somerset County, NJ.

What are the coordinates for 08821?

The approximate center point is 40.51700 (Latitude) and -74.68430 (Longitude).

Is ZIP code 08821 active?

This page lists ZIP 08821 as Listed based on the latest refresh date shown above.

Does ZIP 08821 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