Fond Du Lac, WI Zip Codes: Find Every Code

Nick Leason

-Oct 22, 2025

Fond Du Lac, WI Zip Codes: Find Every Code

Need to find a zip code in Fond du Lac, Wisconsin? This guide provides a comprehensive list of zip codes for Fond du Lac, along with information about the city and its neighborhoods.

Key Takeaways

Fond du Lac, Wisconsin has multiple zip codes, primarily 54935 and 54937.
Zip codes are essential for efficient mail delivery and various logistical purposes.
Knowing the correct zip code ensures accurate mail routing and delivery.
Fond du Lac is a city located at the southern end of Lake Winnebago, offering a mix of urban and natural attractions.
Understanding the city's geography and demographics can be helpful in various contexts.

Introduction

Fond du Lac, Wisconsin, is a vibrant city with a rich history and a diverse community. Whether you're sending a letter, shipping a package, or simply need to know the zip code for a specific location, having the correct information is crucial. This article provides a comprehensive guide to the zip codes in Fond du Lac, offering a detailed overview of the city's postal system and its geographical context.

What & Why

What are Zip Codes?

Zip codes, or Zone Improvement Plan codes, are numerical postal codes used by the United States Postal Service (USPS) to streamline mail delivery. Introduced in 1963, zip codes divide the country into smaller geographic areas, making it easier to sort and route mail efficiently. A zip code typically consists of five digits, with an optional four-digit extension known as ZIP+4, which further pinpoints specific locations such as streets, buildings, or even individual mailboxes.

Why are Zip Codes Important?

Efficient Mail Delivery: Zip codes enable the USPS to sort and deliver mail more quickly and accurately. By knowing the zip code, postal workers can direct mail to the correct local post office and carrier route.
Package Shipping: Shipping companies like FedEx, UPS, and DHL rely on zip codes to calculate shipping rates and ensure timely delivery. The more accurate the zip code, the smoother the shipping process.
Data Analysis: Zip codes are used in various data analysis applications, such as demographic studies, market research, and targeted advertising. Businesses can use zip code data to understand local markets and tailor their services accordingly.
Emergency Services: In emergency situations, knowing the zip code can help first responders locate the scene more quickly. This is especially important in densely populated areas or when providing directions over the phone.
Online Forms and Applications: Many online forms and applications require a zip code to verify addresses, calculate taxes, or provide location-specific information.

Understanding Fond du Lac's Geography

Fond du Lac is located at the southern end of Lake Winnebago, the largest lake entirely within the state of Wisconsin. The city serves as a hub for the surrounding agricultural region and offers a mix of urban and natural attractions. Understanding the city's geography is helpful in identifying the correct zip code for a specific area.

Fond du Lac Zip Codes

Fond du Lac primarily uses two zip codes:

54935: This is the main zip code for the city of Fond du Lac, covering a large portion of the residential and commercial areas.
54937: This zip code is also used in Fond du Lac and may cover specific neighborhoods or postal routes.

It's worth noting that while these are the primary zip codes, there might be other zip codes associated with specific buildings, businesses, or postal facilities within Fond du Lac. To ensure accuracy, it's always best to verify the zip code with the recipient or consult the USPS website.

How to Find a Zip Code in Fond du Lac

USPS Website: The official USPS website (www.usps.com) offers a zip code lookup tool. You can enter an address to find the corresponding zip code.
Online Search Engines: Use search engines like Google or Bing to search for "zip code for [address] Fond du Lac, WI".
Zip Code Maps: Online zip code maps can provide a visual representation of zip code boundaries within Fond du Lac.
Contact the Local Post Office: If you're unsure about the zip code for a particular address, you can contact the Fond du Lac post office directly.

Examples & Use Cases

Sending Mail: When addressing an envelope or package, always include the correct zip code to ensure timely delivery. For example:
```
[Recipient Name]
[Street Address]
Fond du Lac, WI 54935
```
Online Shopping: When making online purchases, you'll be asked to enter your shipping address, including the zip code. Providing the correct zip code ensures your order is delivered to the right location.
Filling Out Forms: Many forms, such as job applications, loan applications, and medical forms, require you to provide your zip code. This information is used for various administrative and statistical purposes.
Finding Local Businesses: If you're looking for a business in a specific area of Fond du Lac, knowing the zip code can help you narrow down your search. Online directories and search engines often allow you to filter results by zip code.

Best Practices & Common Mistakes

Best Practices

Always Verify: Double-check the zip code before sending mail or providing it on a form. Incorrect zip codes can cause delays or misdelivery.
Use ZIP+4: If you have the ZIP+4 code, include it in the address. This provides a more precise location and can speed up delivery.
Update Your Address: If you move to a new address, be sure to update your zip code with the USPS and any other relevant organizations.

Common Mistakes

Using the Wrong Zip Code: This is the most common mistake. Always verify the zip code using a reliable source.
Omitting the Zip Code: Forgetting to include the zip code can cause significant delays in mail delivery.
Using an Old Zip Code: If you've moved recently, make sure you're using your current zip code, not your old one.

FAQs

1. What is the main zip code for Fond du Lac, WI? The main zip code for Fond du Lac is 54935. — Monday Night Football: Who's Playing?

2. Are there other zip codes in Fond du Lac? Yes, 54937 is another zip code used in Fond du Lac. There may be additional zip codes for specific buildings or facilities.

3. How can I find the zip code for a specific address in Fond du Lac? You can use the USPS website, online search engines, or zip code maps to find the zip code for a specific address. — NJ Evening Pick 3: Winning Numbers, Results & How To Play

4. Why is it important to use the correct zip code? Using the correct zip code ensures efficient mail delivery, accurate shipping calculations, and proper routing of emergency services.

5. What is a ZIP+4 code? A ZIP+4 code is a four-digit extension added to the basic five-digit zip code. It provides a more precise location, such as a specific street, building, or mailbox. — Spring Hill, FL Zip Code Guide

Conclusion

Knowing the correct zip codes for Fond du Lac, Wisconsin, is essential for efficient mail delivery, accurate shipping, and various other purposes. By using the resources and best practices outlined in this guide, you can ensure your mail and packages reach their destination promptly. If you're still unsure about a zip code, don't hesitate to use the USPS website or contact the local post office for assistance.

Ready to send your mail or package? Make sure you have the correct zip code to ensure timely delivery!

Last updated: October 26, 2023, 14:35 UTC