High Quality Content by WIKIPEDIA articles! Sacred Heart is a small unincorporated community in Pottawatomie County, Oklahoma, United States. Established in 1879 by Father Isidore Robot as a Catholic mission on the old Pottawatomie reserve, it was originally named Sacred Heart Mission. The name was changed to Sacred Heart in 1888 shortly before the area was opened to settlement by non-Indians. The post office was closed in 1954. The mission site is located nine miles east of US 177 (Asher, Oklahoma) on SH 39, then one mile north on Sacred Heart Road.