A total of approximately 1,000 acres were listed for sale in Pennsylvania's Juniata County recently, representing a total value of $13 million in Juniata County land for sale. Juniata County ranks 58th out of 67 counties in the Keystone State for the total acreage of land currently advertised for sale. Of all locations in Juniata County with farms and rural real estate for sale, Mifflintown featured the most land for sale. Juniata County is the 57th biggest county (393 square miles) in Pennsylvania. It's located in the Alleghenies & Valleys Pennsylvania region of Pennsylvania.