Washington County is in Tallgrass Prairie Kansas. Of the 105 counties in the Wheat State, 898-square-mile Washington County ranks 30th by size. Kansas's Washington County has roughly 1,000 acres of farms for sale based on recent Land Network data. The combined market value of ranches, farms, hunting land and other rural land and acreage for sale here was roughly $3 million. The average price of farmland for sale in Washington County was $609,200. The economy here is principally agricultural. Farms for sale in Washington County hold livestock including cattle, horses, goats and sheep. Browse all Kansas 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.