John C. Zimmerman Sr. was married to Elizabeth Dietz.[3] Together, they had seven children. Their second child, John C. Zimmerman Jr., would later serve as sheriff of Genesee County, Michigan.[4]
^ abc"Chapter XIII: Roster of City Officials". History of Genesee County, Michigan, Her People, Industries and Institutions. Michigan Historical Commission. 1916. Archived from the original on 2020-01-16. Retrieved 2009-02-06.