Originally from the CIA World Factbook 2000, with bits added from the U.s. Department of State site.
... family size is 3.04. In the city the population is spread out with 27.2% under the age of 18, 8.7% from 18 to 24, 29.5% from 25 to 44, 21.0% from 45 to 64, and 13.5% who ...