Land for sale in Coconino County, Arizona, recently totaled approximately $588 million and around 100,000 acres. Coconino County ranks eighth in the Apache State for the total acreage of land currently advertised for sale. There were five properties listed as sold in Coconino County through the Land Network Comparable Sales Program. This represented a total value of $6,362,657. Williams featured the most land for sale. From an economic perspective, government and state-level services contribute most to Coconino County's overall GDP. Coconino County is the largest county in Arizona (18,661 square miles). It's located in the Northern Arizona region of Arizona.