From Grain to Great: The Enduring Legacy of Siemer Milling Company

There’s a good chance the last cookie you enjoyed or the crackers in your pantry contain flour from a small town in central Illinois. That flour — milled with precision and delivered with pride — likely came from Siemer Milling Company, a business that has been turning locally grown wheat into world-class flour for over 140 years.

 

A Legacy Rooted in Teutopolis

 

Siemer Milling traces its origins to November 6, 1882, when a milling operation opened in Teutopolis, Illinois as Hope Mills, Uptmor & Siemer, Proprietors. By 1906, Joseph Siemer and his son Clemens J. bought out their partner and gave the business the name it carries today. The Siemer family name went on the door — and has stayed there ever since.

 

Growth came steadily. A new pneumatic roller mill was installed in 1962. A larger facility opened in 1979 to keep pace with rising demand. By 1995, a second mill had been built in Hopkinsville, Kentucky, and a third followed in West Harrison, Indiana in 2015. Today, the company operates three facilities across the Midwest, employs over 170 people, and purchases roughly 25 million bushels of locally grown wheat each year.

 

More Than Just Flour

 

Siemer’s product line spans well beyond standard flour. The company mills more than 15 specialized varieties — from cookie and cracker flour to pretzel, pizza, and non-chlorinated flour — alongside food-grade wheat bran, wheat germ, and specialty additives. Its heat treatment division, launched in 2003, serves customers who need enhanced food safety and shelf-life properties. Even milling co-products find a purpose, repurposed for animal feed and select industrial applications.

 

Rooted in Relationships, Built for the Future

 

What separates Siemer from a commodity supplier is how seriously it takes the relationship between mill and farm. The company’s grain team conducts annual crop tours — visiting fields before harvest to monitor quality firsthand. For farmers, the partnership means stability, transparency, and flexible pricing. For Siemer, it means consistently high-quality wheat and a supply chain grounded in trust.

 

In 2018, the company opened a test kitchen and innovation center in a renovated century-old mercantile building in Teutopolis — old bones, new ideas. There, Siemer’s technical team works alongside customers to develop custom flour solutions, backed by rigorous in-house testing and a strong food safety program. Sustainability runs through it all: the company understands that as a buyer of 25 million bushels of locally grown grain per year, it has a meaningful stake in the health of regional agriculture.

 

Still a Family Business — and Proud of It

 

In 2025, Rick Siemer marked 50 years with the company and Henry Siemer was named President — the latest chapter in a multigenerational story. Family owned, Siemer operates with values of Respect, Trust, and Responsibility that aren’t marketing copy; they’re the way the company has run since 1882. Its headquarters remains at 111 West Main Street in Teutopolis, the same town where it all began.