The state of Mexico takes national number one in terms of population with more than 14 million inhabitants according to the latest statistics contained in the 2005 census, while it reports a population, density of 586 persons per sq. kilometer and concentrates as much as 13% of the people in the nation, population distributed across the 125 municipalities, and 13% of which reside in rural areas. On the other hand, life expectancy for those born in the state reaches 72 years for men and 77 years of age for women, very close to the national average. Regarding education and religion, 6% of the adult population did not attend school, the average schooling for those older than 15 is 8,7 years which is equivalent to a level of secondary school, and 88% of the population follows the Catholic faith. During the year 2005 this populous state welcomed more than 400,000 Mexicans from other regions, while only 3% of its residents speak an indigenous dialect, being the mazahua, otomi and nahuatl the most common ones.