Designed for the Office of Juvenile Justice and Delinquency Prevention (OJJDP) and found on the OJJDP web site, the data enable users to view, print, and download juvenile population estimates according to age, gender, race, and ethnicity. The tool provides detailed tables of population estimates for 1990 and 1998 for the entire United States, each State, and the 3,141 counties. Tables provide estimates for several age groups and also include age groupings pertinent to juvenile justice issues. Population groupings are consistent with those used in the Federal Bureau of Investigation's Uniform Crime Reporting Program. 1 table