Washington County is in Tallgrass Prairie Kansas. Of the 105 counties in the state, Washington County ranks 30th in terms of size (898 square miles). There is around 1,000 acres of farms for sale in Washington County, Kansas, based on recent Land Network data, making it the most common type of land for sale in Washington County. The combined market value of land for sale here is $1 million. The average price of farms for sale in Washington County was $652,301. The county has a rural, farm-based economy. Farms for sale in Washington County feature 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 commercial or individual needs.