Mexico is divided into 31 states (estados) and 1 Federal District (Distrito Federal), which contains the capital, Mexico City.
States and their capital cities:
... is spread out with 25.6% under the age of 18, 7.5% from 18 to 24, 33.8% from 25 to 44, 21.3% from 45 to 64, and 11.8% who are 65 years of age or older. The median ...