Of 67 counties in the Keystone State, Warren County ranks 16th in terms of size (898 square miles). Warren County is in Great Lakes & Wilds Pennsylvania. Warren County, Pennsylvania, has around 1,000 acres of ranches for sale based on recent Land Network data. The combined market value of farmsand rural real estate for sale here was $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.