Of five counties in the state, Kauai County ranks fourth by size (1,266 square miles). Kauai County is in Kauai Hawaii. Recent Land Network data shows roughly 1,000 acres of ranches for sale in Hawaii's Kauai County, which is valued at a combined $41 million. Browse all Kauai 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 Kauai County is residential property.