In which county is ZIP code 45390 located?

ZIP 45390 is listed under Darke, OH.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 45390: Union City, OH

ZIP: 45390

County: Darke

Coordinates: 40.20180, -84.78320

ZIP Type: Standard

Time Zone: Eastern Time (ET)

This profile provides an in-depth look at ZIP code 45390, serving Union City in OH. It lies in Darke and supports delivery, planning, and address verification.

Primary City	Union City
ZIP Code	45390
County	Darke
State	OH
Latitude / Longitude	40.20180, -84.78320
ZIP Type	Standard
Time Zone	Eastern Time (ET)
Data Updated	2026-01-08

Maps & Useful Links

Open in Maps: Google Maps · OpenStreetMap

These links show the approximate center point for ZIP 45390 (not an exact boundary).

Geographic & Administrative Context

For mapping and verification, 45390 is commonly represented around 40.20180, -84.78320. These coordinates help identify the general area within Darke, OH.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 45390 for mail delivery and general location reference in Darke, OH.

Coverage may include nearby neighborhoods and adjacent unincorporated areas commonly associated with Union City.

Related ZIP Codes (Nearby)

Explore other postal codes near Union City within OH.

Frequently Asked Questions

What is the primary city for ZIP code 45390?

The primary city for this ZIP code is Union City, located in OH.

In which county is 45390 located?

ZIP code 45390 is situated within Darke, OH.

What are the coordinates for 45390?

The approximate center point is 40.20180 (Latitude) and -84.78320 (Longitude).

Is ZIP code 45390 active?

This page lists ZIP 45390 as Listed based on the latest refresh date shown above.

Does ZIP 45390 cover multiple areas?

Yes. Many ZIP codes cover multiple neighborhoods or nearby areas. For exact boundaries, use official mapping tools.

Methodology & Data Notes

How we build this page: We generate this page from a structured ZIP dataset and refresh key fields (city, county, and coordinates) during scheduled updates. Coordinates represent an approximate center point, not an official boundary map.
Sources: Public ZIP reference datasets and geographic coordinate references. If you use specific sources (e.g., USPS, Census), list them on your About/Methodology page.

Page updated: 2026-01-08