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A Gazetteer for the United States and Canada
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The Commemorative Quarter for South Dakota







Do you know of Sioux Valley ???

This page is an orphan - a placeholder until we can discover more about Sioux Valley. When we encounter a name that is new to us, we add it to our Gazetteer with the hope that we'll discover more information in the future. Such is the case with Sioux Valley.<1>

We found mention of Sioux Valley as a post office (see Mentions and References below), but can't determine its location - other than being located somewhere in Union County, South Dakota.

It's common that the post office is named the same as the community in which it's located (although that's not always case). In this case, we can't match this post office to any of the existing communities in our gazetteer.<2>

From the Blevins / Hellbock List: The post office opened  in 1867 and closed  in 1879.

Communities Also Named Sioux Valley ...

We found three communities that share the name Sioux Valley.

Within South Dakota, the name Sioux Valley is unique.

Beyond South Dakota, we know of another three communities that are located throughout in the United States and Canada. Of these three communities, .

  • Communities Elsewhere In North America ...
    • Manitoba
      • Please visit our profile page for the Manitoba community of Sioux Valley.
    • Minnesota
      • Jackson County
      • Please visit our profile page for the Minnesota community of Sioux Valley [Jackson County].
    • Nebraska
      • Fillmore County
      • Please visit our profile page for the Nebraska community of Sioux Valley [Fillmore County].

Miscellaneous References and Mentions for Sioux Valley ...

We've created the following list to keep track of the sources that proved useful in adding to our knowledge about Sioux Valley:

Found in a comprehensive list of Post Offices that was created by Cameron Blevins and Richard Helbock.<3>

List of Post Offices in the United States (1870)
Published by the Government Printing Office

More Orphans in  Union County ...

Can you help?

As we explained above, when we encounter a name that might be a community or a post office we add it to our Gazetteer. If we have little information to go with the name, we call them Orphans. Below are Orphans that we believe to be located in Union County.

Big Sioux 
BruleLiberty
  
FoleyMcCook
  
GarlandVirginia

Footnotes ...

<1>This entry could have originated in error. It might be that a source had a misprint, was simply wrong or we made a transcription error while referencing it. Many of the documents we reference are from the 1800s and the early 1900s, with some easier to read than others.
<2>Part of the difficulty in identifying whether a name is a post office or a community lies with how Post Offices were named. We've prepared an article with our understanding of how post offices were named: Naming of Post Offices.
<3>A copy of their list with background information can be found at:

      https://cblevins.github.io/us-post-offices/data-biography/









 

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This page was last modified/updated: 14 Apr 2025