In which county is ZIP code 54121 located?

ZIP 54121 is listed under Florence, WI.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 54121: Florence, WI

ZIP: 54121

County: Florence

Coordinates: 45.90270, -88.22890

ZIP Type: Standard

Time Zone: Central Time (CT)

Explore detailed information for ZIP code 54121 in Florence, WI. We include verified county details for Florence plus key geographic references used for mapping and logistics.

Primary City	Florence
ZIP Code	54121
County	Florence
State	WI
Latitude / Longitude	45.90270, -88.22890
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 54121 (not an exact boundary).

Geographic & Administrative Context

For mapping and verification, 54121 is commonly represented around 45.90270, -88.22890. These coordinates help identify the general area within Florence, WI.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 54121 for mail delivery and general location reference in Florence, WI.

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

Related ZIP Codes (Nearby)

Explore other postal codes near Florence within WI.

Frequently Asked Questions

What is the primary city for ZIP code 54121?

The primary city for this ZIP code is Florence, located in WI.

In which county is 54121 located?

ZIP code 54121 is situated within Florence, WI.

What are the coordinates for 54121?

The approximate center point is 45.90270 (Latitude) and -88.22890 (Longitude).

Is ZIP code 54121 active?

This page lists ZIP 54121 as Listed based on the latest refresh date shown above.

Does ZIP 54121 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