Union County ZIP Codes
Pennsylvania, United States · 14 codes
Union County in Pennsylvania has 14 ZIP codes, from 17810 to 17889, serving 14 places.
ZIP codes in Union
Frequently asked questions
What is the ZIP code of Union?
Union has 14 ZIP codes, from 17810 to 17889. The table lists the places each one serves.
How many places are listed in Union County?
14 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.