According to the latest census that took place across the Mexican territory in the year 2005, Hidalgo is home to 2´345,514 inhabitants and its population is distributed throughout 84 municipalities, of which Pachuca de Soto is reported to be the more densely populated with 1,552 inhabitants per sq. km., which means it concentrates as much as 11% of the people in the state. Birth rate in the state of Hidalgo during the year 2006 was less than 3%, the lowest in the history of the region. Statistics shows it is occupied by a very young population with 58% of its members under 30 years of age; as well as a life expectancy for those to happen to be born in the state of 71,5 years for men and 77,1 years for women. Regarding health particulars, heart and liver disease, malignant tumors and diabetes represent the main causes of death in the state. In terms of education, the level reported in Hidalgo corresponds to that of a community with a high degree of isolation, as 4% of those under 14 years of age do not attend school, 13% of those over 15 years are illiterate, and only 7% have actually obtained, a professional, degree. On other aspects, statistics show that 27 out of every 1,000 inhabitants migrated to the U.S. in search of a better life, which puts the state in a fifth place nationally after Aguascalientes, Jalisco, Nayarit and Guerrero; also that 88% of its residents are declared Catholics; and that 15% of those over 5 years old speak a native dialect, 68% of which corresponds to the nahuatl tongue, the largest and most common in the state.