This line shapefile represents Frentes de Manzana (Census Blocks) for the Mexican state of Nuevo Leon. This file was released by the Instituto Nacional de EstadÌstica y GeografÌa (INEGI) as part of the 2015 Population Survey, Encuesta Intercensal. This layer does not include socio-demographic data and was downloaded, cleaned, and released by Diego Valle-Jones (diego@diegovalle.net). Refer to the documentation for methodologies and variable names (in Spanish). Original information on this survey is available at http://www.inegi.org.mx/est/contenidos/proyectos/encuestas/hogares/especiales/ei2015/default.aspx