In which county is ZIP code 54234 located?

ZIP 54234 is listed under Door, WI.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 54234: Sister Bay, WI

ZIP: 54234

County: Door

Coordinates: 45.18750, -87.11390

ZIP Type: Standard

Time Zone: Central Time (CT)

Get a reliable snapshot of the Sister Bay, WI postal area 54234. This page summarizes county, coordinates, and local facts to help with services and location research.

Primary City	Sister Bay
ZIP Code	54234
County	Door
State	WI
Latitude / Longitude	45.18750, -87.11390
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 54234 (not an exact boundary).

Geographic & Administrative Context

The geographic center of ZIP code 54234 is approximately 45.18750 (latitude) and -87.11390 (longitude). This location sits within Door, contributing to regional planning across WI.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 54234 for mail delivery and general location reference in Door, WI.

This ZIP may extend beyond the city core into nearby communities within Door.

Related ZIP Codes (Nearby)

Explore other postal codes near Sister Bay within WI.

Frequently Asked Questions

What is the primary city for ZIP code 54234?

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

In which county is 54234 located?

ZIP code 54234 is situated within Door, WI.

What are the coordinates for 54234?

The approximate center point is 45.18750 (Latitude) and -87.11390 (Longitude).

Is ZIP code 54234 active?

This page lists ZIP 54234 as Listed based on the latest refresh date shown above.

Does ZIP 54234 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