In which county is ZIP code 61856 located?

ZIP 61856 is listed under Piatt, IL.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 61856: Monticello, IL

ZIP: 61856

County: Piatt

Coordinates: 40.02630, -88.56860

ZIP Type: Standard

Time Zone: Central Time (CT)

Get a reliable snapshot of the Monticello, IL postal area 61856. This page summarizes county, coordinates, and local facts to help with services and location research.

Primary City	Monticello
ZIP Code	61856
County	Piatt
State	IL
Latitude / Longitude	40.02630, -88.56860
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 61856 (not an exact boundary).

Geographic & Administrative Context

For mapping and verification, 61856 is commonly represented around 40.02630, -88.56860. These coordinates help identify the general area within Piatt, IL.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 61856 for mail delivery and general location reference in Piatt, IL.

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

Related ZIP Codes (Nearby)

Explore other postal codes near Monticello within IL.

Frequently Asked Questions

What is the primary city for ZIP code 61856?

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

In which county is 61856 located?

ZIP code 61856 is situated within Piatt, IL.

What are the coordinates for 61856?

The approximate center point is 40.02630 (Latitude) and -88.56860 (Longitude).

Is ZIP code 61856 active?

This page lists ZIP 61856 as Listed based on the latest refresh date shown above.

Does ZIP 61856 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