In which county is ZIP code 51591 located?

ZIP 51591 is listed under Montgomery, IA.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 51591: Red Oak, IA

ZIP: 51591

County: Montgomery

Coordinates: 41.03030, -95.15620

ZIP Type: Standard

Time Zone: Central Time (CT)

This profile provides an in-depth look at ZIP code 51591, serving Red Oak in IA. It lies in Montgomery and supports delivery, planning, and address verification.

Primary City	Red Oak
ZIP Code	51591
County	Montgomery
State	IA
Latitude / Longitude	41.03030, -95.15620
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 51591 (not an exact boundary).

Geographic & Administrative Context

Coordinates for 51591 are listed as 41.03030 / -95.15620, useful for GPS and service checks in and around Red Oak, IA.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 51591 for mail delivery and general location reference in Montgomery, IA.

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

Related ZIP Codes (Nearby)

Explore other postal codes near Red Oak within IA.

Frequently Asked Questions

What is the primary city for ZIP code 51591?

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

In which county is 51591 located?

ZIP code 51591 is situated within Montgomery, IA.

What are the coordinates for 51591?

The approximate center point is 41.03030 (Latitude) and -95.15620 (Longitude).

Is ZIP code 51591 active?

This page lists ZIP 51591 as Listed based on the latest refresh date shown above.

Does ZIP 51591 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