Union County is in Northeast New Mexico. Of the 33 counties in the Land of Enchantment, Union County is 15th in terms of its size (3,831 square miles). There is about 3,000 acres of farms for sale in Union County, New Mexico, based on recent Land Network data. The combined market value of land and rural real estate for sale here is nearly $9 million. The average price of farms for sale in Union County was $3 million. The economy here is principally agricultural. Farms for sale in Union County sustain livestock including cattle, horses and sheep. Browse all New Mexico farms for sale on the Land Network to find the farm, cattle operation, hobby farm or other farm property that's right for your future business or individual needs.