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Stephen Joseph Zimmer

August 3, 2020 | 20 comments

Stephen Joseph Zimmer age 26, of Onalaska Wisconsin, passed away peacefully on Sunday, July 26, 2020 at his home in Onalaska. He was born on May 22, 1994 to Dean and Sandy Zimmer. He graduated from Onalaska high school in 2012.

Stephen had many interests with nature. He enjoyed hiking, biking and fishing. He liked having collections beginning with dinosaurs at an early age and ending with coin collecting along with sports and rap music.

He is survived by his parents, Dean and Sandy Zimmer of Onalaska. Brothers, Aaron (Holly) Zimmer of Madison, Michael (Amy) Zimmer of Onalaska, Paul (Breanna) Zimmer of Mequon. Sisters, Rebecca (John) Mortellaro of St. Paul, MN, Sarah Zimmer of Denver Colorado, Emily (Drew) Brenengen of Galesville, WI, and Jennifer Zimmer of La Crosse. Half-brothers James Wrobel of La Crosse and David Wrobel of Manitowoc, WI. Half-sister Samantha Larson of Chicago, IL. He leaves behind grandparents, several aunts and uncles, many cousins, nieces and nephews.

He was preceded in death by his birth mother, Lisa Genardo; half-brother, Jacob Gassen; and cousin, Corey Blaedorn.

Thank you to the staff at Gundersen Behavioral Health and the First Responders of Onalaska.

In lieu of flowers, memorials are preferred to Gundersen’s Mental Health and Social Services Department or the Hunger Task Force. If you are interested in giving memorials to Gundersen, please follow this link: https://foundation.gundersenhealth.org/donate-now and choose, ‘Mental Health and Social Services’ Designation.

A small family celebration of life will be held at a later date.




  1. Lori zierke

    So sorry for your families loss šŸ™šŸ»

    • Sandy Zimmer

      Thank you so much for thinking of us.
      Would you need 3 bowling balls?

    • Doug Huggett

      Iā€™m saddened by your loss, Sandy, and offer my condolences to you and your family. Colleen had told me of this news, and am thankful to be reminded to send this note when reading through obituaries on this site.šŸ™šŸ»ā¤ļø.

    • Rebecca

      I went to school with him and was just talking to him before. I cant believe hes gone. I’m so sorry for the family

  2. Gretchen Lorenz

    To the whole Zimmer family,

    I am so very sorry for your loss. You are all in my thoughts and prayers.

    Love to you all,
    The Lorenz Family

    • Paige murphy

      He was one of my best friends so sorry for the family’s loss he was and always will be a great guy gonna miss you so much stephen!! ā¤ā¤ā¤ love you bud. R.i.p.

  3. jan mailey

    Sandy, Dean & family,

    I am sad for you all.

  4. Pat Niedercorn

    Sandy and family I al so very sorry for your loss. I cannot even imagine losing a child. My thoughts and prayers are with you my dear. Please let me know if you need anything. Hugs

    • Lyn Palm

      I remember Stephen as a dinosaur loving little boy!
      Thinking of your family with hugs and prayers!

      • Charlene Purnell

        So sorry for your loss. Keeping your family in our prayers.

    • Jacki

      So sorry for your family’s loss.

  5. Kathy Henriksen

    Sandy and Dean, I am so sorry for your loss. My thoughts and prayers are with you.

  6. Della landers

    Sandy and dean. I am so sorry to hear about stevie! I remember him so much! I enjoyed babysitting years ago! So very very sorry! Thinking of all of you! Della and tom!

  7. Jerry and Patty Adams

    We are so sad to hear about Stephen. He bowled with our son Brady when they were young. Our hearts go out to you all.

    Jerry and Patty Adams

  8. Danielle Hansen

    Stephen is going to be missed so very dearly! When he was a little boy he was so loving and full of energy. He was always so curious and eager to learn new things. He carried that with him through life. Im going to miss our chats and seeing how you were doing. RIP cousin I love you and miss you so much already

  9. Jill Knutson

    I am so sorry to hear about your loss. Sending love to you.

  10. Josh

    I love you bro I’m going to miss all the good times that that we had n yet to come cant believe your gone.

  11. Robert wilson

    I’m going to miss you a lot brother rest in peace….

  12. Andy Niles

    Stephen worked for us at PeopleReady. He was such a good person and always smiling and happy. We were shocked to learn of his passing. And hope the family can find peace at this terrible time. In our line of work, we meet so many people that its impossible to remember them all. But the good ones stand out. Stephen was a good one. We will miss him tremendously…

    -Andy Niles
    Branch Manager

  13. Mistlyn

    Sorry I wasn’t there for you Agrio. Love you Stephen.


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