In which county is ZIP code 51242 located?

ZIP 51242 is listed under Lyon, IA.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 51242: Lester, IA

ZIP: 51242

County: Lyon

Coordinates: 43.44430, -96.33610

ZIP Type: Standard

Time Zone: Central Time (CT)

Explore detailed information for ZIP code 51242 in Lester, IA. We include verified county details for Lyon plus key geographic references used for mapping and logistics.

Primary City	Lester
ZIP Code	51242
County	Lyon
State	IA
Latitude / Longitude	43.44430, -96.33610
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 51242 (not an exact boundary).

Geographic & Administrative Context

Coordinates for 51242 are listed as 43.44430 / -96.33610, useful for GPS and service checks in and around Lester, IA.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 51242 for mail delivery and general location reference in Lyon, IA.

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

Related ZIP Codes (Nearby)

Explore other postal codes near Lester within IA.

Frequently Asked Questions

What is the primary city for ZIP code 51242?

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

In which county is 51242 located?

ZIP code 51242 is situated within Lyon, IA.

What are the coordinates for 51242?

The approximate center point is 43.44430 (Latitude) and -96.33610 (Longitude).

Is ZIP code 51242 active?

This page lists ZIP 51242 as Listed based on the latest refresh date shown above.

Does ZIP 51242 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