In which county is ZIP code 50138 located?

ZIP 50138 is listed under Marion, IA.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 50138: Knoxville, IA

ZIP: 50138

County: Marion

Coordinates: 41.31640, -93.09540

ZIP Type: Standard

Time Zone: Central Time (CT)

This profile provides an in-depth look at ZIP code 50138, serving Knoxville in IA. It lies in Marion and supports delivery, planning, and address verification.

Primary City	Knoxville
ZIP Code	50138
County	Marion
State	IA
Latitude / Longitude	41.31640, -93.09540
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 50138 (not an exact boundary).

Geographic & Administrative Context

Coordinates for 50138 are listed as 41.31640 / -93.09540, useful for GPS and service checks in and around Knoxville, IA.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 50138 for mail delivery and general location reference in Marion, IA.

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

Related ZIP Codes (Nearby)

Explore other postal codes near Knoxville within IA.

Frequently Asked Questions

What is the primary city for ZIP code 50138?

The primary city for this ZIP code is Knoxville, located in IA.

In which county is 50138 located?

ZIP code 50138 is situated within Marion, IA.

What are the coordinates for 50138?

The approximate center point is 41.31640 (Latitude) and -93.09540 (Longitude).

Is ZIP code 50138 active?

This page lists ZIP 50138 as Listed based on the latest refresh date shown above.

Does ZIP 50138 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