Of five counties in the state, 2,166-square-mile Honolulu County ranks third by size. Honolulu County is in the Oahu Hawaii region. The total value of about 3 million acres of residential land and property recently listed for sale in Honolulu County, Hawaii, was around $687 million. The average price of residential acreage for sale in Honolulu County was $3 million. Browse all residential land and rural property for sale in Hawaii to find residential land and properties that suit your lifestyle needs, from existing residential homes and estates to land ready for future residential-property development.