Hi Brenda. Walter Romig's book, "Michigan Place Names" has two Wheatfield's listed in Michigan. [pgs 596-597] Wheatfield, Calhoun County: Got its name in 1881 when its post office opened and the post office closed in 1896. Wheatfield, Ingham County: Got its name in 1841, opened its first post office in 1851 and the post office closed in 1855. Regards ~ Donna