Alamillo, New MexicoAlamillo is an unincorporated community and census-designated place in Socorro County, New Mexico, United States. Its population was 102 as of the 2010 census. Interstate 25 passes through the community.GeographyAccording to the U.S. Census Bureau, the community has an area of, all land.EducationIt is within Socorro Consolidated Schools. Socorro High School is the comprehensive high school of the district.