Buchanan County ZIP Codes
Iowa, United States · 11 codes
Buchanan County in Iowa has 11 ZIP codes, from 50607 to 52329, serving 11 places.
ZIP codes in Buchanan
Frequently asked questions
What is the ZIP code of Buchanan?
Buchanan has 11 ZIP codes, from 50607 to 52329. The table lists the places each one serves.
How many places are listed in Buchanan County?
11 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.