In which county is ZIP code 40121 located?

ZIP 40121 is listed under Hardin, KY.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 40121: Fort Knox, KY

ZIP: 40121

County: Hardin

Coordinates: 37.89280, -85.94890

ZIP Type: Standard

Time Zone: Central Time (CT)

This profile provides an in-depth look at ZIP code 40121, serving Fort Knox in KY. It lies in Hardin and supports delivery, planning, and address verification.

Primary City	Fort Knox
ZIP Code	40121
County	Hardin
State	KY
Latitude / Longitude	37.89280, -85.94890
ZIP Type	Standard
Time Zone	Central Time (CT)
Data Updated	2026-01-08

Maps & Useful Links

Open in Maps: Google Maps · OpenStreetMap

These links show the approximate center point for ZIP 40121 (not an exact boundary).

Geographic & Administrative Context

For mapping and verification, 40121 is commonly represented around 37.89280, -85.94890. These coordinates help identify the general area within Hardin, KY.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 40121 for mail delivery and general location reference in Hardin, KY.

Some addresses near Fort Knox may share this ZIP due to delivery routing and local service areas.

Related ZIP Codes (Nearby)

Explore other postal codes near Fort Knox within KY.

Frequently Asked Questions

What is the primary city for ZIP code 40121?

The primary city for this ZIP code is Fort Knox, located in KY.

In which county is 40121 located?

ZIP code 40121 is situated within Hardin, KY.

What are the coordinates for 40121?

The approximate center point is 37.89280 (Latitude) and -85.94890 (Longitude).

Is ZIP code 40121 active?

This page lists ZIP 40121 as Listed based on the latest refresh date shown above.

Does ZIP 40121 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