In which county is ZIP code 61370 located?

ZIP 61370 is listed under La Salle, IL.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 61370: Tonica, IL

ZIP: 61370

County: La Salle

Coordinates: 41.23270, -89.08900

ZIP Type: Standard

Time Zone: Central Time (CT)

This profile provides an in-depth look at ZIP code 61370, serving Tonica in IL. It lies in La Salle and supports delivery, planning, and address verification.

Primary City	Tonica
ZIP Code	61370
County	La Salle
State	IL
Latitude / Longitude	41.23270, -89.08900
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 61370 (not an exact boundary).

Geographic & Administrative Context

For mapping and verification, 61370 is commonly represented around 41.23270, -89.08900. These coordinates help identify the general area within La Salle, IL.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 61370 for mail delivery and general location reference in La Salle, IL.

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

Related ZIP Codes (Nearby)

Explore other postal codes near Tonica within IL.

Frequently Asked Questions

What is the primary city for ZIP code 61370?

The primary city for this ZIP code is Tonica, located in IL.

In which county is 61370 located?

ZIP code 61370 is situated within La Salle, IL.

What are the coordinates for 61370?

The approximate center point is 41.23270 (Latitude) and -89.08900 (Longitude).

Is ZIP code 61370 active?

This page lists ZIP 61370 as Listed based on the latest refresh date shown above.

Does ZIP 61370 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