South Branch is an unincorporated community in the U.S. state of Michigan.

[2] The community is primarily located within Goodar Township, Ogemaw County, although a small portion extends east into Plainfield Township, Iosco County.

As an unincorporated community, South Branch has no legally defined boundaries, population statistics, or administrative powers of its own; however, a post office operates out of the community, with ZIP Code 48761.

[3][4] The community of South Branch was established in 1887, and was given a post office in 1889 with the name "Hunt".

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