Millboro, South Dakota: A Glimpse into a Historic Tripp County Community

Millboro, South Dakota: A Glimpse into a Historic Tripp County Community

Nestled within the expansive landscapes of the American Midwest lies Millboro, a quiet, unincorporated community located in Tripp County, South Dakota. While small in scale, Millboro represents the early 20th-century settlement patterns of the Great Plains, where towns often grew around essential industrial hubs.

Geographically, Millboro is situated southwest of the town of Colome. It sits at an elevation of 2,218 feet (676 meters), placing it firmly within the high plains region of the United States.

Key Facts

  • Location: Tripp County, South Dakota, United States.
  • Founded: 1909.
  • Elevation: 2,218 feet (676 meters).
  • Coordinates: 43°04′23″N 99°58′08″W.
  • Status: Unincorporated community.

The Origins and History of Millboro

Millboro was established in 1909 during a period of regional growth. The community's identity is tied directly to its intended purpose; the town was named after a gristmill—a facility used for grinding grain into flour—that was planned near the town site.

As an unincorporated community, Millboro does not have its own municipal government, instead relying on the broader administrative structure of Tripp County.

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Geographic and Administrative Details

Millboro operates within the Central Time Zone (UTC-6), observing Central Daylight Time (UTC-5) during the summer months. For telecommunications, the area utilizes the 605 area code.

For official geographic tracking, the community is identified by the GNIS (Geographic Names Information System) feature ID 1256469.

Millboro Community Profile
Attribute Detail
State South Dakota
County Tripp
Year Founded 1909
Elevation 2,218 ft (676 m)
Area Code 605
Time Zone CST / CDT

Frequently Asked Questions

Where is Millboro located?

Millboro is an unincorporated community located in Tripp County, South Dakota, situated to the southwest of Colome.

When was Millboro founded?

The community was founded in 1909.

How did Millboro get its name?

The town was named after a planned gristmill that was intended to be built near the town site.

What is the elevation of Millboro?

Millboro sits at an elevation of 2,218 feet (676 meters) above sea level.

What is the GNIS ID for Millboro?

The Geographic Names Information System (GNIS) feature ID for Millboro is 1256469.

References

  1. "Millboro". Geographic Names Information System. United States Geological Survey, United States Department of the Interior. Retrieved February 18, 2026.
  2. Federal Writers' Project (1940). South Dakota place-names, v.1-3. University of South Dakota. p. 50.
  3. "history-by-maule.htm". genealogytrails.com. Retrieved July 6, 2025.