Eureka ZIP Code Finder by Area and Number South Dakota

The Eureka zip code is 57437 in South Dakota helps people find the correct mailing location for homes, businesses, and services in Eureka.

Welcome to our complete guide for Eureka, South Dakota ZIP Codes. Whether you're moving to Eureka, sending mail, searching for an address, or looking for local postal information, this page provides everything you need to know about the ZIP Codes serving Eureka, South Dakota.

Every Eureka ZIP Code is assigned by the United States Postal Service (USPS) to support efficient mail delivery and address identification. In addition to postal services, Eureka ZIP Codes are widely used for online shopping, navigation, banking, insurance, healthcare, business operations, and government services.

City	Eureka
Zip Code	57437
State	South Dakota
County	McPherson
Population	1,278
Latitude	45.78368
Longitude	-99.618
Time Zone	America/Chicago

The Eureka South Dakota zip code is used by USPS for mail delivery, shipping, and address identification across Eureka and nearby South Dakota cities.

Eureka South Dakota is a growing city in South Dakota, and many people search for the Eureka zip code, Eureka postal code, Eureka SD zip code, and Eureka South Dakota mailing code when sending mail or locating addresses. The zip code in Eureka is important for deliveries, online orders, location searches, and business listings in Eureka.

If you are searching for the Eureka zip code list, Eureka SD postal code, Eureka South Dakota city zip code, or Eureka mailing zip code, this page helps you quickly find the correct Eureka zip code. Many residents, travelers, and businesses use the Eureka zip code lookup to confirm the correct Eureka mailing address.

The Eureka zip code area covers neighborhoods, residential communities, and business locations in Eureka SD. Whether you are looking for the Eureka city zip code, Eureka South Dakota postal code, Eureka SD mailing code, or Eureka location zip code, the Eureka zip code South Dakota helps identify the correct postal region in South Dakota.

People also search for zip codes near Eureka, Eureka postal codes, Eureka SD zip code lookup, Eureka address zip code, and Eureka South Dakota USPS zip code to find nearby locations in South Dakota.

ZIP Codes in Eureka

The following ZIP Codes serve Eureka, South Dakota.

ZIP Code	County	Population	Time Zone
57437	McPherson	1,278	America/Chicago

Whether you're searching for a residential, commercial, or mailing address, the ZIP Code list above makes it easy to find the correct postal code for Eureka.

About Eureka, South Dakota

Eureka is located in McPherson County, South Dakota, and is served by one or more ZIP Codes assigned by USPS. Residents, businesses, and visitors rely on these ZIP Codes for mail delivery, package shipping, address verification, and location-based services.

Some cities have a single ZIP Code, while larger cities may have multiple ZIP Codes covering different neighborhoods or business districts.

If you're searching for a Eureka ZIP Code, this page provides the latest available information to help you find the correct postal code quickly.

Eureka ZIP Code Map

The Eureka ZIP Code map helps visitors understand the geographic coverage of ZIP Code areas throughout the city.

The map can help you:

Locate neighborhoods
Find nearby ZIP Codes
Explore surrounding communities
Plan travel routes
Understand delivery areas

Find a ZIP Code in Eureka

If you need to locate a ZIP Code within Eureka, you can search using:

Street address
Neighborhood
Business name
Landmark
USPS mailing address

Using the correct Eureka ZIP Code helps improve mail delivery, shipping accuracy, and address verification.

About Living in Eureka

Eureka, South Dakota is part of McPherson County and is home to approximately 1,278 residents. The city operates in the America/Chicago time zone and is identified by the geographic coordinates 45.78368 latitude and -99.618 longitude.

Residents enjoy access to local schools, businesses, public services, healthcare facilities, parks, and transportation networks. Whether you're relocating, visiting, or starting a business, knowing the correct ZIP Code helps simplify everyday tasks.

Common Uses of Eureka ZIP Codes

ZIP Codes in Eureka are commonly used for:

USPS mail delivery
Package shipping
Online shopping
Address verification
Banking
Insurance
Government services
Emergency services
Navigation
Real estate
Business operations
Delivery planning

Why Eureka ZIP Codes Matter

Using the correct Eureka ZIP Code offers several benefits.

For Residents

Faster mail delivery
Accurate online orders
Easier address verification
Better navigation

For Businesses

Shipping optimization
Customer management
Delivery planning
Local marketing

Frequently Asked Questions

Eureka is served by one or more ZIP Codes listed on this page.

Eureka is currently served by 1 ZIP Code. The number of ZIP Codes depends on the size of the city and USPS delivery routes.

Eureka is located in McPherson County.

Eureka is located in South Dakota.

The estimated population of Eureka is 1,278.

Eureka follows the America/Chicago time zone.

Use your street address or browse the ZIP Code list available on this page.

No. Some ZIP Codes may include residential, commercial, government, or PO Box delivery areas.

Using the correct ZIP Code helps improve mail delivery, shipping accuracy, navigation, and address verification.

Official ZIP Code information is maintained by the United States Postal Service (USPS).

Conclusion

Whether you're looking for a mailing address, planning a move, or researching local information, this Eureka, South Dakota ZIP Code guide makes it easy to find the postal information you need. Explore the ZIP Code list, use the map, and browse additional location details to learn more about Eureka and its surrounding communities.