Oneida County is in Southeastern Idaho. Of the 44 counties in the Gem State, 1,200-square-mile Oneida County ranks 26th by size. Oneida County, Idaho, includes around 1,000 acres of residential land for sale based on recent Land Network data. The combined market value of farms and ranches for sale here was almost $10 million. The average price of residential land for sale in Oneida County was $690,243. The county has a rural, farm-based economy. Browse all residential land and rural property for sale in Idaho 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.