Plymouth County ZIP Codes
Iowa, United States · 9 codes
Plymouth County in Iowa has 9 ZIP codes, from 51001 to 51062, serving 9 places.
ZIP codes in Plymouth
Frequently asked questions
What is the ZIP code of Plymouth?
Plymouth has 9 ZIP codes, from 51001 to 51062. The table lists the places each one serves.
How many places are listed in Plymouth County?
9 places.
Source: GeoNames postal codes (CC BY 4.0), geonames.org, retrieved 2026-10-22. Place coordinates are approximate. Check with the national postal service before sending anything valuable.