The city was formed from the communities of Banks, Salzburg, and Wenona.

[3] The community of Bangor was served by the Banks Post Office which opened on May 18, 1864.

[3] Salzburg, also Salzburgh, Post Office was opened on March 19, 1869.

[7] The Michigan Central rail line was built north from community in 1871.

[10] The Banks Post Office was finally closed on February 28, 1891.