Land for sale in Colorado's Denver County recently totaled approximately $15 million and almost 5,000 acres. Denver County ranks 61st in the Mile High State for the total number of acres of land currently advertised for sale. Among cities in Denver County with ranches, farms, hunting land and other rural land and acreage for sale, Denver had the most land for sale. Denver County is Colorado's 62nd biggest county (154 square miles). It's located in the Denver Colorado region of the state.