In which county is ZIP code 53546 located?

ZIP 53546 is listed under Rock County, WI.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 53546: Janesville, WI

ZIP: 53546

County: Rock County

Coordinates: 42.66830, -89.00250

ZIP Type: Standard

Time Zone: Central Time (CT)

Explore detailed information for ZIP code 53546 in Janesville, WI. We include verified county details for Rock County plus key geographic references used for mapping and logistics.

Primary City	Janesville
ZIP Code	53546
County	Rock County
State	WI
Latitude / Longitude	42.66830, -89.00250
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 53546 (not an exact boundary).

Geographic & Administrative Context

For mapping and verification, 53546 is commonly represented around 42.66830, -89.00250. These coordinates help identify the general area within Rock County, WI.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 53546 for mail delivery and general location reference in Rock County, WI.

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

Related ZIP Codes (Nearby)

Explore other postal codes near Janesville within WI.

Frequently Asked Questions

What is the primary city for ZIP code 53546?

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

In which county is 53546 located?

ZIP code 53546 is situated within Rock County, WI.

What are the coordinates for 53546?

The approximate center point is 42.66830 (Latitude) and -89.00250 (Longitude).

Is ZIP code 53546 active?

This page lists ZIP 53546 as Listed based on the latest refresh date shown above.

Does ZIP 53546 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