Washington County is in Southwestern Idaho. Of the 44 counties in the Gem State, 1,473-square-mile Washington County ranks 20th by size. There is around 6,000 acres of farms for sale in Washington County, Idaho, based on recent Land Network data. The combined market value of farms, ranches, hunting land and other land for sale here is approximately $23 million. The average price of farms for sale in Washington County was $3 million. Farms for sale in Washington County support livestock including cattle, horses, sheep, pig and goats. Browse all Idaho farms for sale on the Land Network to find the farm, cattle operation, hobby farm or other farm property that's right for your future business or individual needs.