Mercer County ZIP Codes
Pennsylvania, United States · 20 codes
Mercer County in Pennsylvania has 20 ZIP codes, from 16113 to 16311, serving 20 places.
ZIP codes in Mercer
Frequently asked questions
What is the ZIP code of Mercer?
Mercer has 20 ZIP codes, from 16113 to 16311. The table lists the places each one serves.
How many places are listed in Mercer County?
20 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.