Definition: Age classification is based on the age of the person in complete
years as of April 1, 2000. The first release of Census 2000 data on age, from the Redistricting Data file,
identifies only one age category: 18 years and over. Additional age categories
will be published in summer 2001.
Scope and Methodology: The data on age were derived from answers to a question that was asked of all
people in Census 2000. The age of the person was usually derived from their
date of birth information. More Information:Age