Union County ZIP Codes
Arkansas, United States · 10 codes
Union County in Arkansas has 10 ZIP codes, from 71724 to 71765, serving 10 places.
ZIP codes in Union
Frequently asked questions
What is the ZIP code of Union?
Union has 10 ZIP codes, from 71724 to 71765. The table lists the places each one serves.
How many places are listed in Union 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.