Joan Oster, 76, Eureka, SD, passed away peacefully Sunday, June 28, 2026 at Arrowhead Senior Living Center in Osage Beach, MO.

Joan is survived by her sister Joyce Burke and husband Lynn in Camdenton, MO; nephew Troy Burke and wife Jeanette in Blaine, MN; niece Traci Fisher and husband Jeremy in Omaha, NE; grandnephews Jayden Fisher and Joshua Burke; and grandnieces Julia Burke and Sadie Fisher.

Funeral services are scheduled for 11:00 AM, Monday, July 6, 2026 at Lien-Straub-Carlsen Chapel, Eureka, with Pastor Ryan Gage leading the service. Interment follows at the Zion Lutheran Church Cemetery, Eureka.

Visitation commences 10:00 AM Monday.

Services are in care of Lien-Straub-Carlsen Chapel, Eureka.