In which county is ZIP code 61277 located?

ZIP 61277 is listed under Whiteside, IL.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 61277: Prophetstown, IL

ZIP: 61277

County: Whiteside

Coordinates: 41.63120, -89.94670

ZIP Type: Standard

Time Zone: Central Time (CT)

Get a reliable snapshot of the Prophetstown, IL postal area 61277. This page summarizes county, coordinates, and local facts to help with services and location research.

Primary City	Prophetstown
ZIP Code	61277
County	Whiteside
State	IL
Latitude / Longitude	41.63120, -89.94670
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 61277 (not an exact boundary).

Geographic & Administrative Context

Coordinates for 61277 are listed as 41.63120 / -89.94670, useful for GPS and service checks in and around Prophetstown, IL.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 61277 for mail delivery and general location reference in Whiteside, IL.

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

Related ZIP Codes (Nearby)

Explore other postal codes near Prophetstown within IL.

Frequently Asked Questions

What is the primary city for ZIP code 61277?

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

In which county is 61277 located?

ZIP code 61277 is situated within Whiteside, IL.

What are the coordinates for 61277?

The approximate center point is 41.63120 (Latitude) and -89.94670 (Longitude).

Is ZIP code 61277 active?

This page lists ZIP 61277 as Listed based on the latest refresh date shown above.

Does ZIP 61277 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