In which county is ZIP code 46321 located?

ZIP 46321 is listed under Lake, IN.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 46321: Munster, IN

ZIP: 46321

County: Lake

Coordinates: 41.55440, -87.50110

ZIP Type: Standard

Time Zone: Central Time (CT)

This profile provides an in-depth look at ZIP code 46321, serving Munster in IN. It lies in Lake and supports delivery, planning, and address verification.

Primary City	Munster
ZIP Code	46321
County	Lake
State	IN
Latitude / Longitude	41.55440, -87.50110
ZIP Type	Standard
Time Zone	Central Time (CT)
Data Updated	2026-01-08

Maps & Useful Links

Open in Maps: Google Maps · OpenStreetMap

These links show the approximate center point for ZIP 46321 (not an exact boundary).

Geographic & Administrative Context

The geographic center of ZIP code 46321 is approximately 41.55440 (latitude) and -87.50110 (longitude). This location sits within Lake, contributing to regional planning across IN.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 46321 for mail delivery and general location reference in Lake, IN.

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

Related ZIP Codes (Nearby)

Explore other postal codes near Munster within IN.

Frequently Asked Questions

What is the primary city for ZIP code 46321?

The primary city for this ZIP code is Munster, located in IN.

In which county is 46321 located?

ZIP code 46321 is situated within Lake, IN.

What are the coordinates for 46321?

The approximate center point is 41.55440 (Latitude) and -87.50110 (Longitude).

Is ZIP code 46321 active?

This page lists ZIP 46321 as Listed based on the latest refresh date shown above.

Does ZIP 46321 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