In which county is ZIP code 66521 located?

ZIP 66521 is listed under Pottawatomie, KS.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 66521: Onaga, KS

ZIP: 66521

County: Pottawatomie

Coordinates: 39.48890, -96.17000

ZIP Type: Standard

Time Zone: Central Time (CT)

This profile provides an in-depth look at ZIP code 66521, serving Onaga in KS. It lies in Pottawatomie and supports delivery, planning, and address verification.

Primary City	Onaga
ZIP Code	66521
County	Pottawatomie
State	KS
Latitude / Longitude	39.48890, -96.17000
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 66521 (not an exact boundary).

Geographic & Administrative Context

For mapping and verification, 66521 is commonly represented around 39.48890, -96.17000. These coordinates help identify the general area within Pottawatomie, KS.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 66521 for mail delivery and general location reference in Pottawatomie, KS.

Some addresses near Onaga may share this ZIP due to delivery routing and local service areas.

Related ZIP Codes (Nearby)

Explore other postal codes near Onaga within KS.

Frequently Asked Questions

What is the primary city for ZIP code 66521?

The primary city for this ZIP code is Onaga, located in KS.

In which county is 66521 located?

ZIP code 66521 is situated within Pottawatomie, KS.

What are the coordinates for 66521?

The approximate center point is 39.48890 (Latitude) and -96.17000 (Longitude).

Is ZIP code 66521 active?

This page lists ZIP 66521 as Listed based on the latest refresh date shown above.

Does ZIP 66521 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