Grundy County ZIP Codes
Iowa, United States · 9 codes
Grundy County in Iowa has 9 ZIP codes, from 50609 to 50680, serving 9 places.
ZIP codes in Grundy
Frequently asked questions
What is the ZIP code of Grundy?
Grundy has 9 ZIP codes, from 50609 to 50680. The table lists the places each one serves.
How many places are listed in Grundy 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.