Wayzata Post Office is the name given to a section of western Hennepin County, Minnesota, that lies within the 55391 ZIP code, which is assigned to the Wayzata Post Office. The area surrounds eastern Lake Minnetonka. Mailing addresses with the ZIP code 55391 are written as "Wayzata, MN 55391", though some of the properties themselves lie outside of Wayzata city limits and are in fact part of the seven other municipalities. As citizens of their respective cities, the residents receive their own services and vote in their own elections.
The Wayzata Post Office serves residents in eight Minnesota cities, in total or partial. Only three of these eight lie completely within the zone.