Dianne Marie Heim, 84, of Dubuque, Iowa, passed away peacefully at home on June 18, 2025, surrounded by her loving family.

Visitation will be held from 9:00 a.m. to 12:00 p.m. on Tuesday, June 24, 2025, at St. Joseph the Worker Catholic Church. A Mass of Christian Burial will follow at 12:00 p.m. at the church, officiated by the Very Rev. Brian M. Dellaert. The family will have a private entombment at Mount Olivet Cemetery. Leonard Funeral Home & Crematory, 2595 Rockdale Road, is assisting the family.

Dianne was born on August 18, 1940, in Dubuque, Iowa, the daughter of Richard and Mary (Koeff) Miller. She attended Sacred Heart School and graduated from Immaculate Conception Academy in 1958. Later in life, she returned to school to complete her Iowa Real Estate education.

She married her high school sweetheart, Richard “Dick” Heim, on April 23, 1960. Together, they quickly began building a family and a life filled with love, laughter, and purpose. Dianne loved movies, dances, and playing card games like Bridge. She especially cherished the gatherings with her friends in their Poor Man’s Poker Club. An avid sports enthusiast, she enjoyed volleyball, tennis, and golf—and was proud to have scored a hole-in-one as a longtime member of Lacoma Golf Course.

Her Catholic faith was a guiding force in her life, which she shared generously with others. She was a proud cancer survivor and, along with Richard, served as a Franciscan Associate for many years. Dianne was a devoted stay-at-home mother until 1981, when she began a successful and fulfilling career in real estate. She loved being a realtor, always eager to learn and form meaningful friendships. She recently retired, from real estate, in January 2025.

Dianne was also passionate about service. She worked as an aide to children with disabilities at Franklin and Audubon Schools and volunteered for 25 years at the Shalom Retreat Center, where she was instrumental in the success of the Shalom Shenanigans fundraiser for ten years. She also volunteered at Stonehill Care Center, the Drug and Prison Court at the Archdiocesan Center, and rang bells annually for the Salvation Army.

Her dedication to others was recognized in many ways. She was named Volunteer of the Year by the Archdiocesan Center and received a special award from the Governor of Iowa. She also served on multiple committees for the Board of Realtors and received several awards for her contributions. The Sertoma Club honored her with its “Service to Mankind” Award, recognizing her tireless efforts in support of the Children’s Miracle Network and other causes. As one admirer once said, “If Dianne quit volunteering today, she would still have put in more hours doing so than anyone.”

In honor of her legacy of service, her children established the “Dick and Dianne Community Service Scholarship” at Clarke University.

Of all the honors she received in her life, Dianne’s greatest joy and pride were her five children. She loved them with all her heart and treasured every moment with them. Holidays were especially meaningful to her, full of warmth, laughter, and family traditions. Dianne had a sharp wit and a wonderful sense of humor that she passed on to those around her. She was a beloved wife, mother, grandmother, great-grandmother, and friend to many.

Dianne is survived by her husband of 65 years, Richard “Dick” Heim; their children: Rich (Anne) Heim, David (Theresa) Heim, Michelle (Dean) Shanahan, Tim (Barb) Heim, and Bob (Jennifer) Heim; grandchildren: Christine (Jake), Emily (Bob), Michael (Erin), Meredith (Matt); Erin (Kevin), Andrew (Emily); Derek (Nicole), Nicole (Jared), Alison (Brian); Spencer (Kelly), Logan (Samantha); Jacob (Giovanna), and Alec; and great-grandchildren: Cooper, Rylee, Caleb; Connor, Charlotte, Claire; Odette, Ensley; Collins, Brooks, Kairi, Carter, Bryson, Braxton; Luke.

She was preceded in death by her parents, Richard and Mary Miller, and her parents-in-law, Bernard and Edith Heim.

In lieu of flowers memorials may be made to St. Joseph the Worker Church or Sisters of St. Francis in Dianne’s name.