Juan Manuel Uribe has developed a KML file 
which shows population data for over 200,000 locations all over Mexico. The file uses a network link and when you zoom into an area of interest (say Mexico City) it will pull the population data for that area. You will see red circular placemark icons. If you click on the placemarks you get population broken down by male, female, and by age groups (the descriptions are in Spanish). Nice work Juan! See his post at the GEC.
via Dulce’s Spanish GE Blog.
