In which county is ZIP code 48040 located?

ZIP 48040 is listed under St. Clair, MI.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 48040: Marysville, MI

ZIP: 48040

County: St. Clair

Coordinates: 42.91350, -82.48130

ZIP Type: Standard

Time Zone: Eastern Time (ET)

Get a reliable snapshot of the Marysville, MI postal area 48040. This page summarizes county, coordinates, and local facts to help with services and location research.

Primary City	Marysville
ZIP Code	48040
County	St. Clair
State	MI
Latitude / Longitude	42.91350, -82.48130
ZIP Type	Standard
Time Zone	Eastern Time (ET)
Data Updated	2026-01-08

Maps & Useful Links

Open in Maps: Google Maps · OpenStreetMap

These links show the approximate center point for ZIP 48040 (not an exact boundary).

Geographic & Administrative Context

Coordinates for 48040 are listed as 42.91350 / -82.48130, useful for GPS and service checks in and around Marysville, MI.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 48040 for mail delivery and general location reference in St. Clair, MI.

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

Related ZIP Codes (Nearby)

Explore other postal codes near Marysville within MI.

Frequently Asked Questions

What is the primary city for ZIP code 48040?

The primary city for this ZIP code is Marysville, located in MI.

In which county is 48040 located?

ZIP code 48040 is situated within St. Clair, MI.

What are the coordinates for 48040?

The approximate center point is 42.91350 (Latitude) and -82.48130 (Longitude).

Is ZIP code 48040 active?

This page lists ZIP 48040 as Listed based on the latest refresh date shown above.

Does ZIP 48040 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