Los Alamos County (English: "The Poplars" or "Cottonwoods") is a county in the U.S. state of New Mexico. As of the 2010 census, the population was 17,950. The smallest county in area of this state was administered exclusively by the U.S. federal government during the Manhattan Project, but now has equal status to New Mexico's other counties. The county has two population centers known as CDPs: Los Alamos (the county seat) and White Rock. Los Alamos County comprises the Los Alamos, NM Micropolitan Statistical Area, which is also included in the Albuquerque–Santa Fe–Las Vegas, NM Combined Statistical Area. The county is home to the Los Alamos National Laboratory. Los Alamos County is noted for having the lowest level of child poverty of any county in the United States.
Los Alamos County (English: "The Poplars" or "Cottonwoods") is a county in the U.S. state of New Mexico. As of the 2010 census, the population was 17,950. The smallest county in area of this state was administered exclusively by the U.S. federal government during the Manhattan Project, but now has equal status to New Mexico's other counties. The county has two population centers known as CDPs: Los Alamos (the county seat) and White Rock.