Of 67 counties in the Keystone State, Warren County ranks 16th by size (898 square miles). Warren County is in Great Lakes & Wilds Pennsylvania. A recent survey of Land Network data includes nearly 1,000 acres of ranches for sale in Pennsylvania's Warren County, which is valued at a combined $8 million. Browse all Warren 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 Warren County is residential property.