Miami County is in East Indiana. Of the 92 counties in the Hoosier?State, 377-square-mile Miami County ranks 61st by size. Browse all Miami County ranches for sale on the Land Network to find the ranch that's right for your business or commercial needs, from the sprawling legacy ranch to unbelievable residential ranch for your second home, investment property or retirement nest egg. The most common type of land for sale by combined acreage in Miami County is residential property.