The value of all farms, rural land, hunting land and other land for sale in New York's Montgomery County recently was almost $26 million, representing a combined 1,891 acres of land for sale in Montgomery County. Montgomery County ranks 46th out of 62 counties in the Empire State for the total number of acres of land currently advertised for sale. Amsterdam featured the most land for sale. Montgomery County is New York's 51st largest county (410 square miles). It's located in the Central New York region of New York.