57049 Zip Code North Sioux City Union

Today Aug 27, 2026, ZIP Code 57049 is located in North Sioux City, South Dakota, in County Union. It serves as an essential reference for accurate mail delivery, this ZIP Code assists identify the accurate postal area for residential and business addresses.

57049 Zip Code – Union, North Sioux City, SD

The 57049 zip code serves Union. It is a neighborhood in North Sioux City, South Dakota. This code is important for accurate mail delivery. It can also help you find local amenities such as schools, parks and community events. By using zip codes like 57049 you can explore different neighborhoods, it also shows what makes each area unique.

Demographics of Zip Code 57049

Located in North Sioux City, South Dakota, zip code 57049 has a specific population and density that reflect the local community.

Finding the Right Zip Code for North Sioux City, Union County

If you need to send mail to North Sioux City Union county, you can easily find the zip code online or by visiting your local post office.

FAQs

How many digits is the Union zip code?

The Union zip code in North Sioux City is a five-digit number used to identify this specific area.

Does the Union zip code ever change?

Zip codes may change due to postal service updates or administrative reasons. If you are looking for the Union zip code always check for the most current information from official postal sources or local post offices.

Which county is zip code 57049 in?

Zip code 57049 covers areas within Union county, South Dakota.