Multnomah County Oregon is covered by a total of 60 ZIP Codes. There are 9 ZIP Codes in Multnomah County that extend into adjacent counties (Clackamas County, Columbia County, Hood River County, and Washington County). Of the ZIP codes within or partially within Multnomah County there are 37 Standard ZIP Codes, 6 Unique ZIP Codes and 16 PO Box ZIP Codes.
Click on the ZIP Codes in the interactive map to view more information. The map control in the upper right corner can be used to toggle map layers on and off. The red outline is the border of Multnomah County and can be turned on and off. Each type of postal code can also be turned on and off.