The Juvenile Justice and Delinquency Prevention Act of 1974 was amended in 1985 to provide states assistance to either establish and operate or to expand and operate statewide clearinghouse for information on missing and exploited children. Missing child clearinghouses exist or are in the process of development in each of the 50 states, the District of Columbia, Puerto Rico, and the U.S. Virgin Islands. Many states have expanded the missing child clearinghouses to include adults, missing endangered adults, and or missing persons with dementia or other mental disabilities. Missing child/person clearinghouses provide a wide range of services through collaboration with various agencies, including local, state, tribal, and federal law enforcement agencies. Services include reporting and identifying missing and unidentified persons, maintenance of a database of missing persons, dispersion of information into state and national databases, assistance to the public, and collaboration with other state clearinghouses. Other resources include the development of missing person training programs, online lists of the state’s current missing persons, and the provision of missing person alerts.