Monitoring the Future
http://monitoringthefuture.org/
Monitoring the Future is an ongoing study of the behaviors, attitudes, and values of American secondary school students, college students, and young adults.
Youth Risk Behavior Surveillance System (YRBSS)
http://whttp://www.cdc.gov/HealthyYouth/yrbs/index.htmww.cdc.gov/HealthyYouth/yrbs/index.htm
The Youth Risk Behavior Surveillance System (YRBSS) monitors priority health-risk behaviors and the prevalence of obesity and asthma among youth and young adults.
National Survey on Drug Use and Health (NSDUH)
The National Survey on Drug Use and Health (NSDUH) provides national and state-level data on the use of tobacco, alcohol, illicit drugs (including non-medical use of prescription drugs) and mental health in the United States.
Kids Count Data Center
http://www.kidscount.org/datacenter
This system contains state- and city-level data for over 100 measures of child well-being.
U.S. Census
The provides several ways to search the U.S. Census information.