 Because they lived on Federal land, the state of New Mexico did not allow residents of Los Alamos to vote in elections, although it did require them to pay state income taxes.A drawn-out series of legal and legislative battles lay ahead before the residents of Los Alamos became fully-fledged citizens of New Mexico on 10 June 1949.Birth certificates of babies born in Los Alamos during the war listed their place of birth as PO Box 1663 in Santa Fe.