Flo Mlynarczyk was born in Fort Morgan, Colorado. Her parents divorced and she moved with her mother first to Loveland, Colorado and eventually to Los Angeles, California. Upon graduation from high school in 1943, Mlynarczyk moved to Kodiak, Alaska, to live with friends.
Back in Bell Gardens, Mlynarczyk worked for a department store, married and divorced in 1945, gave birth to her son, Michael, in 1946, and ended up in Tonopah, Nevada, with a sister who ran a café there. After a second marriage ended, Mlynarczyk moved to Las Vegas, Nevada and began working at Phelps Pump and Equipment as a bookkeeper. By 1962, she was office manager at Propane Sales and Service where she met her third husband, Ed.
It was while she was working in propane sales that Mlynarczyk joined the Breakfast Club, the first of many organizations that she worked with and learned from. After Ed’s retirement from the fire department, they bought property on West Charleston and finished the house that had been started there, rented it out, and traveled all over Nevada.
Mlynarczyk got involved with the University of Nevada, Las Vegas library, joined the Mesquite Club and participated in its many civic activities, and worked for the Las Vegas Convention Center. The thousands of hours she spent working with various charitable organizations earned her recognition as Volunteer of the Year, and she was listed in Distinguished Women of Southern Nevada for five years running.