Of 92 counties in the state, Washington County ranks ninth by size (516 square miles). Washington County is in South Indiana. Recent listings of ranches for sale in Indiana's Washington County totals 1,000 acres and a combined market value of about $900,000. The most common type of land for sale by combined acreage in Washington County is house. Browse all Washington 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 Washington County is house.