In which county is ZIP code 61604 located?

ZIP 61604 is listed under Peoria, IL.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 61604: Peoria, IL

ZIP: 61604

County: Peoria

Coordinates: 40.71110, -89.63240

ZIP Type: Standard

Time Zone: Central Time (CT)

Get a reliable snapshot of the Peoria, IL postal area 61604. This page summarizes county, coordinates, and local facts to help with services and location research.

Primary City	Peoria
ZIP Code	61604
County	Peoria
State	IL
Latitude / Longitude	40.71110, -89.63240
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 61604 (not an exact boundary).

Geographic & Administrative Context

The geographic center of ZIP code 61604 is approximately 40.71110 (latitude) and -89.63240 (longitude). This location sits within Peoria, contributing to regional planning across IL.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 61604 for mail delivery and general location reference in Peoria, IL.

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

Related ZIP Codes (Nearby)

Explore other postal codes near Peoria within IL.

Frequently Asked Questions

What is the primary city for ZIP code 61604?

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

In which county is 61604 located?

ZIP code 61604 is situated within Peoria, IL.

What are the coordinates for 61604?

The approximate center point is 40.71110 (Latitude) and -89.63240 (Longitude).

Is ZIP code 61604 active?

This page lists ZIP 61604 as Listed based on the latest refresh date shown above.

Does ZIP 61604 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