Sena, New MexicoSena is an unincorporated community and census-designated place in San Miguel County, New Mexico, United States. It is located along the Pecos River and New Mexico State Highway 3.HistorySena was founded in the 19th century.EconomySena has no commercial enterprises of its own. The nearest store and Post Office is southeast, in the community of Villanueva.EducationIt is in the West Las Vegas Schools school district. West Las Vegas High School is the area high school.