Of 67 counties in the Keystone State, Warren County is 16th in terms of its size (898 square miles). Warren County is in Great Lakes & Wilds Pennsylvania. There is almost 1,000 acres of ranches for sale in Pennsylvania's Warren County based on recent Land Network data. The combined market value of land and rural real estate for sale here is nearly $5 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.