Union, KY ZIP Code

ZIP code, county, time zone and coordinates of Union, Kentucky

The ZIP code of Union, KY is 41042. It is in Boone County.

Mailing address format for Union

John Smith
123 Main St
UNION KY 41042
USA

USPS prefers capital letters without punctuation. Check the exact ZIP+4 for a street address on the USPS website.

ZIP code	Population	Area
41042	—	22.1 sq mi	Main

ZIP Code Tabulation Areas (ZCTA), U.S. Census Bureau. A ZCTA can cover parts of more than one town.

Tap a place on the map to see it in Street View below. Map: © OpenStreetMap contributors.

Loading Street View…

Drag to look around. Tap any place on the map above, or the "Street View" button on a card, to jump there.

What is the ZIP code for Union, KY?

The main ZIP code for Union, KY is 41042.

How many ZIP codes does Union have?

Union has 1 ZIP code.

What county is Union, KY in?

Union is in Boone County, Kentucky.

What time zone is Union in?

Union is in the America/New York time zone (EST, UTC-05:00 right now).

What are the coordinates of Union?

Latitude 38.94752, longitude -84.67536.

Last updated: November 14, 2026