[3] Located in the southwestern part of the county, it borders the following townships: The village of New Bremen is located in eastern German Township, and the unincorporated community of Lock Two lies in the northeastern part of the township.

According to the U.S. Census Bureau, German Township has an area of 18.5 square miles (47.8 km2).

[7] The township is governed by a three-member board of trustees, who are elected in November of odd-numbered years to a four-year term beginning on the following January 1.

The majority of the township is in the New Bremen School District with southwestern portions being located the Marion Local School District.

The majority of the township is served by the New Bremen (45869) post office, while the southeastern section of the township is served by the Minster (45865) post office.