Home ZIP Database Find by Radius Rankings

Home
Illinois
Union

Union, IL ZIP Codes

1 ZIP code in Union, Illinois.

IL · Union County

← All cities in Illinois

ZipLookup

Free US ZIP code data and demographics for every ZIP code in the country.

Tools

ZIP Search Radius Search ZIP Database

Data

Rankings Richest ZIPs Most Populated

Company

About Privacy Policy

© 2026 ZipLookup. All rights reserved. Demographic data is estimated for illustrative purposes. ZIP code boundaries sourced from public US databases.