Germantown was platted on June 10, 1901. Edward D. Beerman did the platting.[2] Germantown's population was 53 in 1902.[3]
It in the 1910s had a Christian school.[4] The community was home to K-8th grade St. John Lutheran school, before it merged with Zion Lutheran School in Paullina to form Zion - St. John Lutheran School. By 1925, Germantown's population was 55.[5]
South O'Brien Community School District operates schools serving the community.[6] The district was formed on July 1, 1993, by the merger of three school districts: Paullina, Primghar, and Sutherland.[7]