Of 99 counties in the Hawkeye State, Johnson County ranks 20th in terms of size (623 square miles). Johnson County is in Eastern Iowa. There is almost 1,000 acres of ranches for sale in Johnson County, Iowa, based on recent Land Network data. The combined market value of land and rural real estate for sale here is roughly $1 million. Browse all Johnson 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 Johnson County is homesite.