Land for sale in New Mexico's Hidalgo County recently totaled approximately $18 million and approximately 100,000 acres. Hidalgo County ranks 27th in the state for the combined amount of land currently advertised for sale. Among cities in Hidalgo County with land and rural real estate for sale, Lordsburg had the most land for sale. Government and state-level services are the main economic drivers in Hidalgo County. Hidalgo County is the 19th biggest county (3,447 square miles) in New Mexico. It's located in the Southwest New Mexico region of the state.