According to OECD´s classification, rural conditions are found in communities or locations with population density lower than 150 habitants per square kilometre, and which are located more than an hour distance to the closest urban area. In Mexico, 34% of population lives in communities of less than 100 habitants/km2, and of this percentage, 91% live more than an hour distance from urban areas of at least 100 000 habitants. Ten percent of total population in Mexico lives more than four hours from the closest urban area (World Bank, 2004). In 2004, 61% of the Mexican population in extreme poverty lived in rural communities. These and many other statistics of population and social development show that rural development has to be a central public policy for all government programmes, both at federal and state levels.