Union County is in Western Iowa. Of the 99 counties in the Cyclone State, Union County ranks 91st in terms of size (425 square miles). There is 2,000 acres of farms for sale in Union County, Iowa, based on recent Land Network data. The combined market value of land for sale here is $10 million. The average price of farmland for sale in Union County was $2 million. Farms for sale in Union County hold livestock including cattle, horses, sheep, goats and pig. Browse all Iowa 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 lifestyle needs.