Some of the old structures in Ashmore today go back to at least the 1950's. Looking at the historical aerial from that time, there were more buildings lined up, particularly near the southwest corner of East Bay City Forestville Rd and Ashmore Rd.
From Michigan Place Names:
When storekeeper Charles P. Hill became the first postmaster of this rural post office on April 20, 1899, it was in Brookfield Township, Huron County. It was transferred to Tuscola County on May 31, 1904, operating until Sept. 30, 1911 [PO Archives] .