Visit the Hieronymus Mueller Museum

Hieronymus Mueller MuseumHieronymus Mueller Museum
420 West Eldorado St.
Decatur, Illinois

The museum is open to the public on
Tuesday through Saturday (except holidays)
1:00 – 4:00 p.m.
Other visiting times may be scheduled by appointment by calling (217) 423-6161.

$2.00 for adults and $1.50 for those under the age of 17.
Exhibits cover the history of the company, its owners and employees, and the Mueller family.

Hieronymus Mueller Museum | Decatur, Illinois

Welcome to the Hieronymus Mueller Museum, just west of downtown Decatur, Illinois, and open to the public on Tuesday through Saturday and other times by appointment.

The Mueller Museum is dedicated to the collection, preservation, and interpretation of the history of Mueller Company and of the family and descendants of Hieronymus Mueller

The Mueller Museum celebrates the life and legacy of Hieronymus Mueller, a pioneer entrepreneur who emigrated from Germany to Decatur, Illinois, and founded several business concerns, including Mueller Co., which still exists today and produces many of the original signature Mueller products, namely water pressure valves and the iconic fire hydrants that we see in nearly every American town and city.

The Hieronymus Mueller Museum was founded in 1995 by the Hieronymus Mueller Family Foundation to house and curate the vast collection of Mueller Family and Mueller Co physical artifacts, memorabilia and library materials. The museum moved to its present home in 2005, a state-of-the-art facility to preserve and display the historically-significant collection.

The story of Hieronymus Mueller is like the stories of hundreds of thousands of immigrants who were driven to America by the dual forces of opportunity and necessity – the necessity to escape famine, political oppression, religious intolerance, or economic disasters. He made the most of his opportunity and became a quintessential immigrant success arriving with pennies in his pockets while going on to achieve the “American Dream.”

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Saturday January 19th, 2019

It’s still a little frightful outside, so we will be closed today. If you have to get out on the roads, stay safe! ... See MoreSee Less

Saturday January 12th, 2019

Due to the snow, the museum will be closed this afternoon. We wish you all a safe and happy snow day! ... See MoreSee Less

Saturday December 22nd, 2018

In a Family owned company Christmas is an especially important time of year. Starting early in the 1900s the company would give each employee a gift basket of Christmas goodies. It may have a turkey and a ham as well as an assortment of other items. Another Christmas tradition which would start around 1920, would be the Children's Christmas party. The photos seen here are from the 1950s. At that time the company was regularly celebrating the Children's party at the Masonic Temple. Over the years, different types of entertainers were hired for the party. Trained animal shows seemed to be a favorite, but clowns, acrobats, and music and dance numbers were also included. Often times there would be numbers performed by Mueller Employee's children. It was a wonderful time of fellowship for the greater Mueller family.

The Hieronymus Mueller Museum wishes everyone a Happy Holiday Season!
... See MoreSee Less


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My dad, grandpa, and uncle all worked at Mueller. I remember the Christmas program quite well. I remember the Christmas candy that they would give out. Thats been almost 45 years ago. I'm glad to hear they still have the program. It was great.

Mueller really did it up! I vaguely remember going to a Firestone Christmas party (late 1970s), but it was nothing like that. I saw Santa standing at a urinal! Yes, even Santa has to go.

Very cool. My grandpa worked at Mueller and I remember going to the Masonic Temple for the Christmas parties. Now, many years later I work at Mueller.

We still get ham and bacon every year. I always have appreciated and enjoyed it! almost 40yrs now!

Thank You Sweetie for your post.Merry Christmas 🎄❤️🙏

They still have the children’s Christmas party. But I don’t have any little ones so haven’t gone in a few years.

What's the hours of the museum?

Robert J. Dunn this is the museum I told you about. It's very interesting. You & Quint would like it

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