Gilliam County is in Central Oregon. Of the 36 counties in the state, Gilliam County is 25th in terms of its size (1,222 square miles). Gilliam County, Oregon, includes around 1,000 acres of residential land for sale based on recent Land Network data. The combined market value of land and rural real estate for sale here was about $2 million. The average price of residential land for sale in Gilliam County was $345,400. Browse all residential land and rural property for sale in Oregon 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.