In which county is ZIP code 53103 located?

ZIP 53103 is listed under Waukesha, WI.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 53103: Big Bend, WI

ZIP: 53103

County: Waukesha

Coordinates: 42.88850, -88.21220

ZIP Type: Standard

Time Zone: Central Time (CT)

Get a reliable snapshot of the Big Bend, WI postal area 53103. This page summarizes county, coordinates, and local facts to help with services and location research.

Primary City	Big Bend
ZIP Code	53103
County	Waukesha
State	WI
Latitude / Longitude	42.88850, -88.21220
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 53103 (not an exact boundary).

Geographic & Administrative Context

The geographic center of ZIP code 53103 is approximately 42.88850 (latitude) and -88.21220 (longitude). This location sits within Waukesha, contributing to regional planning across WI.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 53103 for mail delivery and general location reference in Waukesha, WI.

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

Related ZIP Codes (Nearby)

Explore other postal codes near Big Bend within WI.

Frequently Asked Questions

What is the primary city for ZIP code 53103?

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

In which county is 53103 located?

ZIP code 53103 is situated within Waukesha, WI.

What are the coordinates for 53103?

The approximate center point is 42.88850 (Latitude) and -88.21220 (Longitude).

Is ZIP code 53103 active?

This page lists ZIP 53103 as Listed based on the latest refresh date shown above.

Does ZIP 53103 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