How do I find a ZIP code by city or state?

Use our ZIP code lookup tool to search by city, state, or address and instantly view related ZIP codes.

What is a ZIP+4 code?

A ZIP+4 code adds four extra digits to a standard ZIP code to help USPS sort and deliver mail more accurately.

Are ZIP codes the same as postal codes?

ZIP codes are the postal code system used in the United States. Other countries use different postal code formats.

Sioux County ZIP Codes - South Dakota

Browse Sioux ZIP Codes

ZIP Codes in Sioux County help organize mail delivery and define local service areas. Each ZIP Code corresponds to a specific community or post office, ensuring residents, businesses, and visitors can find accurate address information quickly. By browsing the complete list of Sioux ZIP Codes, you can easily identify the correct code for mailing, business, or geographic purposes.

Morristown

Post Office	Morristown
County	Sioux
ZIP Code	57645

View Details

Search Zip Code

Zip Codes by State

Disclaimer: The content on this website is provided for general informational purposes only. While we make every effort to ensure that the information is accurate and up-to-date, it should not be relied upon as a substitute for professional advice. We do not accept any responsibility for any errors, omissions, or consequences that may arise from using the information presented here.