Naucalpan (formally: Naucalpan de Juárez) is a city and its surrounding municipality in the Mexican state of México. It is one of the state's most industrialized municipalities, second only to Toluca, its capital. It borders the northwestern part of Distrito Federal, and it is part of the Mexico City Metropolitan Area, which is the second largest Metropolitan Area of the world. Naucalpan is also the birthplace of the Mexican rock band Café Tacuba, whose members are often called "The Blessed Children of Naucalpan" by the media. The city and the municipality are both the third-largest in the state of México in population, after Ecatepec de Morelos and Ciudad Nezahualcóyotl.