Country
United States
Location
Union County
Postal Code
51001

What is Union County (United States) postal/zip code?

The postal code for Union County is 51001. Postal codes in Union County consist of 5 characters following the format NNNNN or NNNNN-NNNN. Union County is located in South Dakota, United States, and is part of the Northern America region. This postal code is essential for accurate mail delivery, online shopping, and official documentation. Whether you're sending a package, filling out a form, or verifying an address, using the correct postal code ensures your mail reaches its destination without delays. You can scan the QR code on the right to quickly save or share the complete address information for Union County.

QR Code for Union County Scan Address

How to Address Mail to Union County

Standard Address Format (click to edit)
RecipientJohn Doe
Street123 Example Street
DistrictUnion County
City & Postal51001 South Dakota
CountryUNITED STATES

Addressing Tips for United States - Union County

  • Postal code format: NNNNN or NNNNN-NNNN
  • Write postal code before the city name
  • Country name in UPPERCASE on last line
  • Include district name for faster delivery
  • ISO country code: US

Shipping to Union County, United States

🇺🇸
Domestic Delivery
1-5 days
Within United States
International
7-21 days
Varies by origin
Customs Threshold
$0
Duty-free limit

Local Carriers in Union County

USPS UPS FedEx

Union County: International Carriers

DHL FedEx UPS

Shipping Tips (Union County)

  • Always include postal code 51001 for faster delivery
  • Items above $0 may incur customs duties
  • Track your package using the carrier's tracking number
  • Consider insurance for valuable shipments

Union County United States Location Information

Union County, United States Map
  • Region Americas
  • Subregion Northern America
  • State South Dakota
  • Phone Code +1
  • Currency USD
  • Coordinates 42.8325, -96.6561
Free Traffic Exchange

5 Postal Codes in Union County

Area State Place Postal Code
Union County South Dakota Akron 51001
Union County South Dakota Elk Point 57025
Union County South Dakota Chatsworth 51011
Union County South Dakota Burbank 57010
Union County South Dakota Alcester 57001

Frequently Asked Questions

The postal code of Union County, South Dakota, United States is 51001. This 5-character code follows the format NNNNN or NNNNN-NNNN.
Union County has approximately 5 postal codes covering different areas and neighborhoods within the district.
Union County is located in South Dakota, United States. It is part of the Americas region and Northern America subregion. The coordinates are 42.83249000, -96.65609000.
To call Union County, United States, you need to dial the international code +1 followed by the local number.
The currency used in Union County, United States is United States Dollar (USD). The currency symbol is $.
The nearest major city to Union County is South Dakota, approximately 0 km away.
You can verify Union County postal codes on PostalZipCode.co. Enter the postal code in the search bar to see its location, district, and city details.
Nearby Locations
City State Distance Latitude Longitude
Elk Point South Dakota 17 km 42.683 -96.684
Vermillion South Dakota 23 km 42.779 -96.929
Clay County South Dakota 28 km 42.915 -96.976
Beresford South Dakota 29 km 43.081 -96.774
North Sioux City South Dakota 37 km 42.527 -96.483
Dakota Dunes South Dakota 41 km 42.487 -96.486
Lincoln County South Dakota 50 km 43.279 -96.722
Canton South Dakota 52 km 43.301 -96.593
Lennox South Dakota 61 km 43.354 -96.892
Yankton South Dakota 61 km 42.871 -97.397
Other United States in States
State Distance Latitude Longitude
Nebraska 306 km 41.493 -99.902
Iowa 311 km 41.878 -93.098
Kansas 452 km 39.012 -98.484
Minnesota 460 km 46.73 -94.686
North Dakota 625 km 47.551 -101.002
Union County in Other Languages
Postal Codes by Country
Country Distance Latitude Longitude
Canada 1,912 km 60 -95
Mexico 2,260 km 23 -102
Bahamas 2,801 km 24.25 -76
Cuba 2,831 km 21.5 -80
Belize 2,941 km 17.25 -88.75
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Last updated: April 2026
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