Porter County ZIP Codes
Indiana, United States · 10 codes
Porter County in Indiana has 10 ZIP codes, from 46301 to 46393, serving 10 places.
ZIP codes in Porter
Frequently asked questions
What is the ZIP code of Porter?
Porter has 10 ZIP codes, from 46301 to 46393. The table lists the places each one serves.
How many places are listed in Porter County?
10 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.