In which county is ZIP code 61243 located?

ZIP 61243 is listed under Whiteside, IL.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 61243: Deer Grove, IL

ZIP: 61243

County: Whiteside

Coordinates: 41.63160, -89.69720

ZIP Type: Standard

Time Zone: Central Time (CT)

Get a reliable snapshot of the Deer Grove, IL postal area 61243. This page summarizes county, coordinates, and local facts to help with services and location research.

Primary City	Deer Grove
ZIP Code	61243
County	Whiteside
State	IL
Latitude / Longitude	41.63160, -89.69720
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 61243 (not an exact boundary).

Geographic & Administrative Context

Coordinates for 61243 are listed as 41.63160 / -89.69720, useful for GPS and service checks in and around Deer Grove, IL.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 61243 for mail delivery and general location reference in Whiteside, IL.

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

Related ZIP Codes (Nearby)

Explore other postal codes near Deer Grove within IL.

Frequently Asked Questions

What is the primary city for ZIP code 61243?

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

In which county is 61243 located?

ZIP code 61243 is situated within Whiteside, IL.

What are the coordinates for 61243?

The approximate center point is 41.63160 (Latitude) and -89.69720 (Longitude).

Is ZIP code 61243 active?

This page lists ZIP 61243 as Listed based on the latest refresh date shown above.

Does ZIP 61243 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