Mailbox Map › United States › Grass Lake › Grass Lake Post Office
Post office · USPS
Grass Lake Post Office, Grass Lake
Grass Lake Post Office at 221 East Michigan Avenue, Grass Lake, MI 49240.
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| Address | 221 East Michigan Avenue, Grass Lake, MI 49240 |
|---|---|
| Area | Grass Lake, Michigan |
| Coordinates | 42.25129, -84.21114 |
| Time zone | America/Detroit |
Mapped by the OpenStreetMap community, last checked 2026-06-17. Spotted a box that's gone? Fix it on OpenStreetMap and this page follows within a month.