In which county is ZIP code 61478 located?

ZIP 61478 is listed under Warren, IL.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 61478: Smithshire, IL

ZIP: 61478

County: Warren

Coordinates: 40.75790, -90.76060

ZIP Type: Standard

Time Zone: Central Time (CT)

Get a reliable snapshot of the Smithshire, IL postal area 61478. This page summarizes county, coordinates, and local facts to help with services and location research.

Primary City	Smithshire
ZIP Code	61478
County	Warren
State	IL
Latitude / Longitude	40.75790, -90.76060
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 61478 (not an exact boundary).

Geographic & Administrative Context

The geographic center of ZIP code 61478 is approximately 40.75790 (latitude) and -90.76060 (longitude). This location sits within Warren, contributing to regional planning across IL.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 61478 for mail delivery and general location reference in Warren, IL.

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

Related ZIP Codes (Nearby)

Explore other postal codes near Smithshire within IL.

Frequently Asked Questions

What is the primary city for ZIP code 61478?

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

In which county is 61478 located?

ZIP code 61478 is situated within Warren, IL.

What are the coordinates for 61478?

The approximate center point is 40.75790 (Latitude) and -90.76060 (Longitude).

Is ZIP code 61478 active?

This page lists ZIP 61478 as Listed based on the latest refresh date shown above.

Does ZIP 61478 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