Born in Hazleton, she was the daughter of Jeff Michalesko, Drifton, and Trisha Nauman, of Freeland.
Chelsea was employed by the Carbon County 911 Services.
Community oriented, she was a member of the Freeland Community and the Lake Harmony Ambulance Services, and the Harwood Fire Department. Chelsea also was a soccer coach for the Weatherly School District.
Preceding her in death were her maternal grandparents, Louise and Neil Nauman, and a paternal grandfather, Tomas Michalesko, and a brother, Jeoffrey Michalesko.
Surviving, in addition to her parents, are her paternal grandmother, Alice Michalesko; brother, Nathan Biggan, Freeland; sisters, Tabetha DiNoia and husband, John, Drums; Trista Michalesko and friend, William Bardwell, Royersford; and many cousins.