In which county is ZIP code 61261 located?

ZIP 61261 is listed under Whiteside, IL.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 61261: Lyndon, IL

ZIP: 61261

County: Whiteside

Coordinates: 41.71990, -89.91690

ZIP Type: Standard

Time Zone: Central Time (CT)

Get a reliable snapshot of the Lyndon, IL postal area 61261. This page summarizes county, coordinates, and local facts to help with services and location research.

Primary City	Lyndon
ZIP Code	61261
County	Whiteside
State	IL
Latitude / Longitude	41.71990, -89.91690
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 61261 (not an exact boundary).

Geographic & Administrative Context

The geographic center of ZIP code 61261 is approximately 41.71990 (latitude) and -89.91690 (longitude). This location sits within Whiteside, contributing to regional planning across IL.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 61261 for mail delivery and general location reference in Whiteside, IL.

This ZIP may extend beyond the city core into nearby communities within Whiteside.

Related ZIP Codes (Nearby)

Explore other postal codes near Lyndon within IL.

Frequently Asked Questions

What is the primary city for ZIP code 61261?

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

In which county is 61261 located?

ZIP code 61261 is situated within Whiteside, IL.

What are the coordinates for 61261?

The approximate center point is 41.71990 (Latitude) and -89.91690 (Longitude).

Is ZIP code 61261 active?

This page lists ZIP 61261 as Listed based on the latest refresh date shown above.

Does ZIP 61261 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