Mexico is divided into 31 states (estados) and 1 Federal District (Distrito Federal), which contains the capital, Mexico City.
States and their capital cities:
... under the age of 18, 3.5% from 18 to 24, 22.3% from 25 to 44, 28.7% from 45 to 64, and 28.1% who are 65 years of age or older. The median age is 50 years. For every 100 ...