In which county is ZIP code 46320 located?

ZIP 46320 is listed under Lake, IN.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 46320: Hammond, IN

ZIP: 46320

County: Lake

Coordinates: 41.60990, -87.50790

ZIP Type: Standard

Time Zone: Central Time (CT)

Explore detailed information for ZIP code 46320 in Hammond, IN. We include verified county details for Lake plus key geographic references used for mapping and logistics.

Primary City	Hammond
ZIP Code	46320
County	Lake
State	IN
Latitude / Longitude	41.60990, -87.50790
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 46320 (not an exact boundary).

Geographic & Administrative Context

Coordinates for 46320 are listed as 41.60990 / -87.50790, useful for GPS and service checks in and around Hammond, IN.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 46320 for mail delivery and general location reference in Lake, IN.

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

Related ZIP Codes (Nearby)

Explore other postal codes near Hammond within IN.

Frequently Asked Questions

What is the primary city for ZIP code 46320?

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

In which county is 46320 located?

ZIP code 46320 is situated within Lake, IN.

What are the coordinates for 46320?

The approximate center point is 41.60990 (Latitude) and -87.50790 (Longitude).

Is ZIP code 46320 active?

This page lists ZIP 46320 as Listed based on the latest refresh date shown above.

Does ZIP 46320 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