Portales is a city in and the county seat of Roosevelt County, New Mexico, United States. The population was 11,131 at the 2000 census. Portales is located near the larger city of Clovis as well as Cannon Air Force Base, a major contributor to the economy of the region.Eastern New Mexico University opened in Portales in 1934 and has grown to become the third largest university in the state. Portales is one of the largest producers of Valencia peanuts in the United States and is the nation's top producer of Certified Organic peanut butter. Portales is home to over 40 dairies and a major US dairy solids plant, together producing and exporting hundreds of millions of dollars of local milk products each year. Portales is the principal city of the Portales Micropolitan Statistical Area, which is part of the larger Clovis-Portales Combined Statistical Area, including Clovis, 20 mi away and Cannon Air Force Base, 12 mi away.