Land for sale in Hidalgo County, New Mexico, recently totaled around $23 million and 100,000 acres. Hidalgo County ranks 27th in the state for the combined amount of land currently advertised for sale. Of all locations in Hidalgo County with farms, ranches, hunting land and other land for sale, Virden featured the most land for sale. Government and state-level services are the main economic drivers in Hidalgo County. Hidalgo County is the 19th largest county (3,447 square miles) in New Mexico. It's located in the Southwest New Mexico region of the state.